Knowledge Base

Why use a loop powered meter?

Using a loop powered meter is often a great choice for displaying a single process variable because it is easy to integrate into existing 4-20 mA current loops, does not require local power, and is a low-cost option compared to line powered meters. In addition, loop powered meters require only two wiring connections. This simplifies wiring significantly and reduces wiring costs.

New Features and Approvals on ConsoliDator+

Learn about the new features and benefits of the PD9000 Consolidator+ Multivariable Controller including PID control, HOA features, and UL approvals.

New and Improved Features on PDW Wireless Products

Learn about the benefits of the redesigned PDW wireless products and what they have to offer.

Display a 4-20 mA Signal Virtually Anywhere

If you have an application to display a 4-20 mA signal, watch this recorded webinar to learn about all the ways you can display that signal without running any additional wires.

The Most Comprehensive Line of Loop-Powered Indicators

Precision Digital has broadened its line of loop-powered indicators and is proud to introduce its New additions: The ProtEX+, VantageView+, and Loop Leader+ Series.

Why a 0 mA Signal is Not Practical

For decades, process instrumentation has largely relied on 4-20 mA signals to transmit process data easily and reliably. Moreover, it is the signal of choice in the process control industry for many reasons. One in particular is the fact that current does not degrade and it remains constant at any point in the loop, as discussed in our review of the Fundamentals of 4-20 mA Current Loops. Therefore, it is a very efficient means to transmit process information. In most cases, this range represents a two-point linear scale where a 4 mA signal represents 0% of a sensor's measurement, while 20 mA indicates 100% of the measurement1. But, why do we use 4-20 mA instead of 0-20 mA? That is a very common question among individuals in the industry. And the answer is simple; a 0 mA signal is not practical. This article will discuss three reasons why a 0 mA signal is not as useful and why 4-20 mA is the industry standard.

De Regreso a lo Básico: Los Fudamentos de los Lazos de Corriente de 4-20 mA

En el mundo del control de procesos, se emplean distintos tipos de señales. Termopares y RTDs proveen la lectura directa de la temperatura, mientras que las señales digitales como Modbus® proporcionan un control preciso de los variables de proceso y su visualización. Las señales analógicas, en las cuales la información del proceso se transmite a través de diferentes niveles de voltaje o corriente, son el tipo de señal más utlizadas hoy día en las industrias que requieren el control de procesos. De todas las señales analógicas disponibles para transmitir información de procesos, el lazo de corriente de 4-20 mA es el estándar dominante en la industria.

Make the Most Out of Precision Digital's 2018 Catalog

This video is a quick overview of Precision Digital's 2018 Catalog. See how it is laid out by input so you can easily show all meters available for a particular input. Every catalog contains a colorful poster of our most popular products, the ProVu, ProtEX-MAX, and Helios in actual size. Learn how you can make the most out of the PDC 2018 Catalog!

Side-By-Side Guide to Hazardous Area Products

Precision Digital manufactures a wide range of rugged meters and controllers designed for quick and easy display of a variety of process signals in harsh or hazardous areas. These signals include 4-20 mA, 0-10 V, strain gauge, pulse, thermocouple and RTD. Our hazardous-area instruments are approved by FM, CSA, ATEX, and IECEx as explosion-proof, intrinsically safe, and nonincendive. Many of our explosion-proof models feature SafeTouch® through-glass buttons which ensure safe operation without the need to remove the cover. Intrinsically safe, loop-powered instruments derive their operating power from the 4-20 mA current loop with a relatively low voltage drop, preventing the need to run additional, costly power lines into the hazardous area. See our side-by-side guide below to learn more about our hazardous area products.

Take Out the Old...Bring In the New

With the recent launch of the New Loop Leader, the price of the older loop-powered panel meters is going to increase substantially and they will be discontinued when supplies are exhausted.

MeterView Pro Software Demonstration

This video will show you how easy it is to program Precision Digital's ProVu process meter for a level application using MeterView Pro PC-based programming software. The software comes preloaded on all ProVu meters and is connected to the PC with the included standard USB cable, so there is no need to download from the internet or from a CD.

How To Show The PDD6000 ProVu Demo Unit

Get in front of your customers with the PDD6000 ProVu Demo meter! This video will show you how to give a demonstration to your customers using Precision Digital's ProVu Demo meter simulating a tank level application.

Learn How The New Loop Leader is the Loop-Powered Meter For You!

In this recorded webinar, you will learn how Precision Digital's feature-packed loop-powered meter makes it more convenient for displaying and controlling your process and how much easier it is to install than a line-powered meter. You will see what display options are available to best represent your process. If you want more control over your process, the Loop Leader is not just a display, we will show you how it can be used for specific applications like pump control, alarm triggering, and more. Need to install your meter in a hazardous area? We will discuss where and how the intrinsically safe and nonincendive approved versions of the Loop Leader can be used. And finally, we'll show how the free USB software greatly simplifies the programming process on the Loop Leader.

Precision Digital Announces Introduction of Intrinsically Safe and Nonincendive Loop Leader Loop-Powered Meters

Precision Digital Corporation, global leader in digital panel meters and control instrumentation, announced today the launch of intrinsically safe and nonincendive, loop-powered process meters and rate/totalizers. The Loop Leader PD6600 series now features models with UL intrinsically safe and nonincendive and ATEX/IECEx intrinsically safe approvals. This makes the Loop Leader series a perfect match for any application, even in hazardous areas!

Meterview XL Programming Software for Loop Leader Meters

Free, PC-based, MeterView XL software that connects to the meter via a micro USB cable is available for programming and setup of the meters. This software greatly simplifies the programming process and also allows the user to save configuration files for later use. The meter will also be powered by the USB connection so no additional power is needed during programming.

Beyond Just a Product Line

In Q1 of 2018, I had the opportunity to speak to many of our best customers as we planned for the upcoming year. In these conversations, I'm pleased to say that I heard just as much about the quality and capabilities of our products as I did about our people, support, and attitude. Obviously, I think the Precision Digital display and control product offering is second to none. Beyond this however, we pride ourselves on our effective customer support, our dedicated technical support, and our responsive sales team. When you buy from Precision Digital, you not only get a great product, but you get our entire company that stands behind it, and clearly that has made an impact. Rather than discuss a product, the rest of this article will give a few insights and metrics into how seriously we take our goal to be the best and easiest company you work with.

Loop Powered Indicator - Loop Leader Series

Loop powered indicators have until now lacked advanced control features. The Loop Leader Series radically improves and expands the functionality expected from a loop powered indicator without sacrificing cost-efficiency, ease-of-use, or voltage drop. These loop powered indicators offer advanced features that allow them to handle a wider range of process control applications.

Precision Digital Corporation Releases New ATEX, IECEx Approved PD685

Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over 40 years, is proud to announce the launch of a new ATEX and IECEx approved, intrinsically safe, loop-powered digital meter, the PD685. Housed in an IP67 field-mountable enclosure with an optional 22mm (0.87") conduit hole, the PD685 is easy to install and setup. It can also be seen from considerable distance with it's 28mm (1.1") high digits. It's enclosure and wide -40°C to +75°C operating temperature make it ideal for outdoor applications in a variety of environmental conditions. The PD685's international hazardous area intrinsic safety approvals and low voltage drop make it a simple and effective display option for hazardous area control loops.

Connect a ProVu to a PC and Install USB Programming Software

This video will show you how to connect a ProVu process meter to your PC and install free MeterView Pro programming software. This is quick and easy as the meter comes with a common USB cable that installs the software directly to the computer.

Power Your Transmitter & Display Your Process with The ProVu

Our new Tech Tips series of videos quickly explain a specific feature that our products offer and how it can be used to meet the needs of your application. This video walks you through the process of powering a 2-wire transmitter from a ProVu series meter.

Go Wireless Without Breaking the Bank, or Your Systems

Running physical wires between devices can be costly and time consuming, especially when there is a need to run them through conduit or dig trenches. Facilities that have been in operation for a long time may have gone through many iterations of process control equipment, leaving behind a rat's nest of old wires which make running of new wires nearly impossible. Certain applications can even prohibit the use of physical wires entirely, such as filling stations at shipping docks and truck terminals where the transmitter is located on the vessel or vehicle.

Precision Digital Announces Introduction of PDW Industrial Wireless Products

Precision Digital Corporation, global leader in digital panel meters and control instrumentation, announced today the launch of a new line of point-to-point industrial wireless products. The PDW Industrial Wireless System is a line of signal wire replacement systems in rugged, NEMA 4X/IP68 industrial housings. They provide a simple way to get analog, discrete, or Modbus® signals from where you have them to where you need them.

Precision Digital Corporation Announces Launch of Helios Series Large Displays

27 April 2017 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation, today announced the latest in large display field instrumentation, the Helios series large display meters and controllers. An IP65 rated field mounted indicator, the Helios series is based on trusted reliability and accuracy of the ProVu series of panel mounted indicators, with a display that is three times larger! Almost every ProVu model now has a large display counterpart in the Helios family.

Loop-Powered Indicators with Advanced Control Features

The use of loop-powered instruments in process control applications has often meant sacrificing features due to voltage drop limitations on the signal loop. While two-wire devices are cost-effective and easy-to-use, they normally lack advanced display and control capabilities. As a result, loop-powered meters are assumed to be useful for indication purposes only. The introduction of the new Loop Leader PD6600 series loop-powered process meters and rate/totalizers represents a shift away from this common assumption without forgetting their simplicity. The PD6600 series offers output options (solid-state relays, open collectors, and 4-20 mA output), a highly detailed and customizable LCD display, and advanced programming options allowing it to handle a wide range of process control applications. All of this with only a 1.5 V drop on the current loop!

Precision Digital's Industrial Wireless System

Precision Digital’s PDW wireless products give you a simple, straightforward way to get analog, discrete, or Modbus® signals from where you have them to where you need them. Our wireless solutions range in complexity from simple point-to-point for wire replacement, to large-scale point-to-multipoint for connecting up to 32 individual field locations to a central base station. Wireless installations may be expanded or improved using an array of base station modules, additional wireless field units, and repeater units. The wireless survey tool kit can provide you with an accurate representation of wireless signal strength throughout your facility before you perform the installation.

Three Great New Ways to Monitor Your Process

Precision Digital just introduced three new great ways to monitor your process. The Loop Leader loop-powered meters have been completely redesigned with many innovative features and improvements. The PDW Industrial Wireless Systems provide an easy way to get analog, discrete, or Modbus® signals from where you have them to where you need them. The Helios large display meters and controllers have a super bright, dual-line display that can be read up to 100 feet away, even in bright sunlight. Visit www.predig.com to learn more about these products.

Precision Digital Announces Introduction of New Loop Leader Loop-Powered Meters

Precision Digital Corporation, global leader in digital panel meters and control instrumentation, announced today the launch of a new line of loop-powered process meters and rate/totalizers. The new Loop Leader PD6600 series is unique among low-cost, two-wire, loop-powered indicators in that it features output options, such as dual solid-state relays, 4-20 mA isolated analog retransmission, and two open collector transistors, as well as advanced alarm and pump control features.

Precision Digital Web Features

Doing Business with Precision Digital is a breeze! From choosing the right level meter and enclosure or shopping by model numbers and checking stock, predig.com offers some great web page features to help you make smart purchasing decisions with confidence and ease.

Four Tips for Wireless Installations

PDW wireless devices have been designed with ease-of-use in mind, with intuitive programming through either the front buttons or PDW Manager programming software. However, wireless communications, no matter the device, can be negatively affected by certain factors, such as physical obstacles and improper equipment placement. This could lead to extended troubleshooting during or after equipment installation. As is the case with any equipment installation, a little leg work at the beginning can go a long way. Always take the time to verify that the wireless units can communicate with each other from the desired mounting locations prior to installation. Also, keep the following installation tips in mind when planning the install.

Meter View Pro USB Programming Software for ProVu, ProtEX-MAX, and Helios Series Meters

MeterView Pro is a programming software designed to be used with the ProVu, Helios, and select ProtEX-MAX Series process and control meters. Each ProVu, Helios, and select ProtEX-MAX meter comes with a standard USB cable and MV Pro is resident on the meter, so you can quickly and conveniently install it on your PC. Watch this video to see a demonstration of how easy it is to program a ProVu PD6000 process meter. Learn more at predig.com/meterviewpro.

Introduction to the Helios Dual-Line Large Display and Controller

The Helios Series is a family of large display process meters based on Precision Digital’s popular line of ProVu® digital panel meters. This is Precision Digital's biggest and brightest display ever with a superluminous sunlight readable display and large 1.8 inch high digits.

Introduction to The ProVu & ProtEX-MAX Great New Features

The ProVu and select ProtEX-MAX Series process meters have been enhanced with a couple of great new features that will make monitoring and controlling your process easier to read and more convenient to set up and program. Attending this webinar, you will get a look at Precision Digital's brightest display ever and learn about the convenient onboard USB programming software.

Introduction to the Helios Series Dual-Line Large Display

This is a recorded webinar of Precision Digital's Introduction to the Helios Series Dual-Line Large Display. After watching this webinar you will get an in-depth look at the Helios' great features, learn about the types of models available, and know what models best suit your processing needs. You will also learn about the new USB programming capability on all ProVu® related products such as the PD2 Helios and the PD8 ProtEX-MAX™.

Be ready for the Summer Sun with Sunlight Readable Displays

With the summer months ahead, many are looking forward to bright and sunny days. However, to those who work with process instrumentation outdoors, the sun may seem a never-ending source of frustration. All too often the local displays and controllers they count on to do their job become unreadable from the bright and direct sunlight. There are many options available, however, to provide clear displays that can be seen even in the brightest direct sunlight.

How to Measure Flow Rate with Level Sensors

Level sensors are capable of measuring more than just level. Flow rate measurement in an open channel, such as a stream, irrigation canal, or unpressurized sewerage pipe, can be accomplished using hydraulic structures known as weirs and flumes. These measure flow rate using the same technologies often applied to tank level measurement, such as bubblers, radar, and ultrasonic level transmitters.

Level Measurement Technologies In The Process Control Industry

Few things are as ubiquitous in the process control industry as the need to measure the level of a process material in a container. Whether that material is water, waste water, petroleum, sugar, or any other form of liquid or solid, level measurement accuracy can be a determining factor in both profit margins and safety.

Level Monitoring & Pump Control with the ProVu PD6000

Level measurement and pump control go hand-in-hand, whether it is making sure that your tanks stay full or that they don’t overflow. Traditionally, however, these two processes required separate devices, a pump controller and a level indicator. Precision Digital’s ProVu PD6000 level display and pump controller combines these important tasks into one device. Not only that, but the PD6000 also offers advanced multi-pump alternation control functionality which can help maximize the life-span of your pumps.

Reducing Signal Noise in Practice

Signal noise in an industrial environment has the ability to cause havoc with process control systems. This electrical noise can inject itself onto analog or digital signals and fool control equipment into thinking the process variable is different from what it actually is. This miscommunication between process control equipment, as with all kinds of miscommunication, can lead to any number of unforeseen, unintended consequences. As any electrical engineer will tell you, no system can continue to function properly without proper communication.

Alarming Possibilities: ISA Alarm Sequencing In A Nutshell

The ideal industrial facility is one in which all process variables remain consistently within normal operating parameters. Such facilities are few and far between, however, so it is necessary that personnel are quickly and effectively notified of abnormal process conditions so that they may be dealt with accordingly. In industrial facilities where there are a multitude of process variables at play, such as automated manufacturing plants, waste water treatment facilities, and the oil and natural gas industries, implementing a successful alarm indication protocol can quickly become frustratingly complex.

Boosting Efficiency in a Natural Gas Flow Application

The end user is a natural gas transportation and storage service provider in the USA with a natural gas storage well flow application. The customer's primary concern when considering a system upgrade was to track flow rate and display the rate locally. The plant contains 180 Class I, Div 2 hazardous area stations in total. The locations are spread out over a five-mile radius and are controlled and monitored from a single control room. The system turnaround was completed over three years.

Precision Digital Corporation Headquarters Has Relocated

1 October 2015 – Hopkinton, MA – Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over 40 years, is proud to announce it has moved into its new headquarters in Hopkinton, MA. The company now occupies a newly renovated, 18,000 ft2 state-of-the-art office space featuring all new office and production spaces, a brick patio with awning and grill, and a 600-gallon saltwater fish tank. The new office is 50% larger than its predecessor and will soon be powered by advanced solar cell panels for green energy production.

The Current Quandary: Ground Loops & Non-Isolated Commons

Any installer of industrial process control equipment will tell you that ground loops are one of the most frustrating signal connection errors to diagnose and repair. The steps required in order to troubleshoot them are often equated to something as mysterious as magical incantations. Issues caused by shared, non-isolated commons are viewed with a similar outlook. Difficulties with shared signal returns are often even confused with ground loops. Ground loops and shared commons can both cause unpredictable signals and render your current loop unusable.

Loop Powered Devices, The Fundamentals Re-Broadcast

This webinar is an introductory class for those who have to deal with two-wire loop powered devices, but are not electrical engineers. After this webinar you will: 1. Understand the key criteria for using or specifying a loop-powered device 2. Know if a loop-powered device is qualified for your application 3. Decide if loop-power is your best choice.

Hazardous Area Classifications: What You Need to Know

During the evening of February 7th, 2008, a series of explosions at the Imperial Sugar manufacturing facility in Port Wentworth, Georgia, just outside of Savannah, resulted in the deaths of fourteen workers and numerous injuries. According to Georgia Fire Commissioner John Oxendine, "It was a very large explosion that totally destroyed the three-story building where it took place." The explosion is believed to have been fueled by the ever-present sugar dust, an inherent aspect of the sugar refining process, which would coat surfaces and equipment in the facility.

Back to Basics {Part 3}: Loop vs Line Power

The previous article in this series discussed loop-powered, or two-wire, devices. These instruments utilize the power supplied to the current loop to power themselves. A two-wire connection may not always be the most optimal power solution because of its inability to power devices that require a large voltage drop. Three and four-wire devices incorporate an external power supply in order to effectively eliminate the voltage drop placed on the process signal current loop. It is important to understand the differences between these three setups as they are fundamentally different and each has its own advantages as well as limitations.

Introduction to Thermocouples, RTDs, and Temperature Transmitters

An introductory class for those who have to deal with common temperature devices and are not electrical engineers or field experts. After watching this webinar recording you will know what thermocouples and RTDs are, and how they work, understand what a temperature transmitter is, and why they are used, and be able to specify the temperature monitoring or control device that is best for your application.

Precision Digital Announces Quick Start Guides for Digital Panel Meters

June 30, 2015 – Holliston, MA – Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over 40 years, has announced the release of a new series of Quick Start Guides for its most popular displays and controllers. Each guide is 8-12 pages of information designed to get the end-user up and running quickly without having to navigate through a complicated manual. A printed copy of each product's Quick Start Guide is included with Precision Digital's most popular digital panel meters: the ProVu PD6000 Process Meter, the PD6200 and PD6300 Rate/Totalizers, and the Trident and Trident X2 Process Meters.

Trident Virtual Meter

Practice programming before you set up your Trident Meter with the Trident Virtual Meter. Follow the simple step-by-step instructions or watch the embedded videos. You can use the Virtual Meter on your desktop computer or mobile device.

The Fundamentals of 4-20 mA Current Loops Re-Broadcast

This webinar is designed as an introductory class for those who have to deal with 4-20 mA process signals but are not electrical engineers. This webinar will answer questions including: What is a 4-20 mA current loop? Why is this signal so popular? How do I wire a 4-20 mA loop? This is a live re-broadcast of our wildly popular The Fundamentals of 4-20 mA Current Loops originally presented in October 2014.

Back to Basics {Part 2}: The Fundamentals of Loop-Powered Devices

Recalling from the previous part of this series, all 4-20 mA current loops require a power supply in order to operate. A lot of loop setups will utilize an external power supply in order to power the devices which are attached to the current loop. It is possible, however, to power all the instruments on the loop with the power supplied for the loop itself. These devices are referred to as loop-powered. This particular setup can be used in situations where it is not practical to supply separate power to all of the devices or in hazardous areas where a low power solution is required. Working in an industry that requires process control, it is imperative to understand whether implementing a loop-powered solution is appropriate or not for your setup.

Precision Digital Releases 2015 Catalog and Price List for Digital Panel Meters and Control Instrumentation

May 6, 2015 – Holliston, MA – Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over 40 years, is pleased to announce the 2015 Catalog and Price List. This organized, two-volume compilation contains all the product information about Precision Digital's expanding product line in one location. The catalog includes the latest product offerings from the company, including the PD6400 High Voltage & Current Meter; the enhanced PD6100 Strain Gauge Meter; and the PD6800-0L1 decimal level display with bargraph indicator, part of the company's expanding ProtEX® line of field-mounted instruments for hazardous areas.

An Introduction To Modbus Communications

This webinar is a back-to-basics review of Modbus communications. Topics covered include: What is Modbus? What are the advantages of Modbus? What key information do you need to work with a Modbus device or system?

Reducing Signal Noise in Process Environments

Signal noise is an all too common complaint in process environments. In this webinar we'll discuss the problem behind high noise signals, best practices you can employ to reduce signal noise and show a couple of real life examples where signal noise is typically a big problem and how the noise problem is mitigated.

Precision Digital to Feature Newest Digital Panel Meters, Explosion-Proof Meters, and Modbus Scanners at ISA Calgary Show 2015

April 1, 2015 – Holliston, MA - Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over 40 years, will demonstrate its newest flow, level, temperature, and pressure meters at the ISA Calgary Show 2015 on April 22-23, 2015 at Stampede Park, Calgary, Alberta, Canada. Located in Booth #815, Halls D&E, the Precision Digital Team will demonstrate the company's new products, including Modbus® Scanners, explosion-proof indicators, and NEMA 4X/IP65 field-mounted displays. Featured will be the ProtEX® PD6800-0L1, an explosion-proof process meter with a segmented bargraph, ideal for oil & gas level applications using the metric system, and the ProtEX® PD6830, a field mounted flow indicator designed for accurate display of and quick access to local or remote process information in hazardous areas or in the harshest safe area applications.

Back to Basics {Part 1}: The Fundamentals of 4-20 mA Current Loops

In the world of process control, there are a myriad of different types of process inputs. Thermocouples and RTDs provide direct temperature reading while digital signals such as Modbus® provide exacting control over process variables and display. Analog signals, where information about the process is transmitted via varying amounts of voltage or current, are the predominant type of input in industries requiring process control today. Of all possible analog signals that can be used to transmit process information, the 4-20 mA loop is, by far, the dominant standard in the industry. As major as the 4-20 mA loop standard has become in the process control industry, many do not understand the fundamentals of its setup and use. Not knowing the basics could potentially cost you money when it comes time to make decisions about process display and control. Having a grasp on the history, workings, pros and cons of the 4-20 mA loop will help you to understand why it is the dominant standard for the industry and allow you to make informed decisions about your process control.

The Fundamentals of Hazardous Area Classifications

From oil and gas processing to chemical manufacturing, hazardous areas are common throughout the process industries. These areas require a complex scheme of agency approvals that can be confusing and difficult to follow. This webinar is designed as a basic overview of the what, why and how of hazardous area classifications.

Precision Digital's ProVu® PD6100 Strain Gauge Meter Features Improved Sensitivity and More Capability

February 24, 2015 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation for over four decades, today announced improvements to a ProVu family member, the PD6100 Strain Gauge Meter and its explosion-proof counterpart, the PD8-6100 Strain Gauge Meter. These are reliable digital strain gauge & load cell meters ideal for weight, millivolt, and force measurement applications. The multipurpose PD6100 and PD8-6100 feature one-button zeroing of the display, auto-zero adjustment (to prevent drift), and clear information display in sleek panel-mounted or rugged field-mounted enclosures.

Ground Loops In 4-20 mA Signals

This webinar offers a basic framework designed to guide you in understanding and preventing ground loops. While a common problem, many instrumentation installers do not fully understand why ground loops happen, or how to avoid them. This is a discussion for instrument installers, operators, and whose who specify 4-20 mA process equipment who are not experienced electrical engineers.

Tank Farm Display and Control Best Practices

This webinar is designed for anyone who specifies, plans, or offers a tank farm display and control solution. It will include some recommended best practices, as well as reviews of new products that will help operators in the tank farm. It will include some real world application examples and photos highlighting why these best practices can make a major difference in your tank farm application.

Fundamentals of Pulse Inputs

This webinar is designed as an introductory class for those who have to deal with process signals but are not electrical engineers. Pulse signals are used in a wide range of process equipment including flow meters, counters, encoders, totalizers, and much more. We'll be covering the fundamental of pulse signals, such as the basic electrical theory, how signals are generated, critical specifications used in equipment selection, and the pros and cons. We'll wrap up with a couple of real world application examples.

Precision Digital's Newest ProVu: The PD6400 High Voltage & Current Meter

January 17, 2015 - Precision Digital, global leader in digital display and control instrumentation for over four decades, today announced the arrival of the latest ProVu Family member, the PD6400 High Voltage and Current Meter. The 1/8 DIN PD6400 features reliable high voltage and current measurement in a user-configurable, dual-line display.

Precision Digital Expands ProVu® Family of Panel Meters: PD6001 Features Easy-to-Read Feet & Inches Display

December 17, 2014 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation celebrating its 40th year in business, today announced the latest ProVu family member, the PD6001 Feet & Inches 1/8 DIN Panel Meter. A NEMA 4X panel mounted indicator, the economical PD6001 is based on a reliable design that features an easy-to-read feet & inches display with adjustable brightness. FT and IN indicators make it ideal for level applications. It is also available as the ProtEX-MAX PD8-6001, an explosion-proof meter for hazardous areas.

Loop vs Line Power; Understanding 2, 3 and 4 Wire Signals

This webinar is designed as an introductory class for those who have to deal with process signals but are not electrical engineers. After attending this webinar, you will have a strong understanding about the basics and the differences between the 2 wire, 3 wire and 4 wire connections. You'll be well equipped to determine the best choice for your applications and make the best decisions for your instruments and meters.

Trident Programming for a 4-20 mA Analog Output

This video details how to program a 4-20 mA analog output, and scale the display value, on a Precision Digital PD765 Trident Series meter.

Loop Powered Devices, The Fundamentals

An introductory class for those who have to deal with two-wire loop powered meters and other devices, but are not electrical engineers. After attending this webinar you will understand the key criteria for using or specifying a loop-powered device, know if a loop-powered device is qualified for your application, and be able to decide if loop-power is your best choice.

Trident Programming for Serial Communication

This video details how to set up serial communications on the Trident PD765 to enable communications between computers or other data terminal equipment.

Trident Programming for Relay and Alarm Operations

This video details how to program relay and alarm operations on a Precision Digital PD765 Trident Series meter.

Trident Programming for a Thermocouple Input

This video details how to program a thermocouple input on a Precision Digital PD765 Trident Series meter.

Trident Programming for an RTD input

This video details how to program an RTD input on a Precision Digital PD765 Trident Series meter.

Trident Programming for a 0-10 V Input

This video details how to program a 0-10 V input, and scale the display value, on a Precision Digital PD765 Trident Series meter.

Trident Programming for a 4-20 mA Input

This video details how to program a 4-20 mA input, and scale the display value, on a Precision Digital PD765 Trident Series meter.

Precision Digital Introduces Multi-Purpose Safe Area Modbus® Scanners

November 17, 2014 – Holliston, MA – Precision Digital Corporation, global leader in digital panel meters and control instrumentation celebrating its 40th year in business, today announced the Vantageview PD6730X Modbus Scanner. The PD6730X is a rugged, NEMA 4X/IP65 Modbus master, slave, or snooper (sniffer). The multi-purpose PD6730X is designed for accurate display of and quick access to information, locally or remotely, in wet or dirty environments. It can accept up to 16 individually programmed process variables (PVs) from multiple devices; four math channels allow for calculations on multiple PVs. The unique SafeTouch through-window buttons allow operation without removing the cover. The pulse input accepts a wide range of flow transmitter signals, including mV input from a magnetic flowmeter, as well as high frequency signals. The PD6730X includes backlighting, two open collector outputs, and an analog output as standard. The scanner has been manufactured to Precision Digital's exacting standards and is housed in a durable, injection-molded thermal plastic enclosure.

Precision Digital Announces ScanView EX Software for PD6730X and PD6830X Modbus Scanners

November 4, 2014 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation celebrating its 40th year in business, today announced ScanView EX Programming Software for the Vantageview PD6730X and ProtEX PD6830X Modbus Scanners. ScanView EX allows industrial plants to take advantage of existing Modbus systems and efficiently pair their devices with Precision Digital Modbus Scanners for accurate display of and quick access to process information, locally or remotely. ScanView EX provides operators with full control of the Modbus scanner configuration process using an intuitive layout and an easy-to-understand interface. Clearly labeled menus enable quick programming of the PD6730X and PD6830X functions.

2014 New Products Webinar

In this webinar, discover how Precision Digital's new products can help you increase application efficiency and safety, improve the effectiveness of your transmitters, and keep customers and operators happy with a complete application solution.

A Guide To Level Monitoring

In this webinar, we will discuss some of the common problems found in level indication and control, take a look at Precision Digital's unique solutions to these problems, help you choose the right product for your application and then talk about some real application success stories.

The Fundamentals of 4-20 mA Current Loops

This webinar is designed as an introductory class for those who have to deal with process signals but are not electrical engineers. Precision Digital's 4-20 mA expert, Joe Ryan brings more than 10 years of process signal experience in the design, marketing, support, and manufacture of process measurement and control devices. He has designed several Precision Digital process meters and served as a Product Marketing Engineer and Product Manager for a line of process controls; supporting sales, service, and support efforts. Joe has extensive experience with 4-20 mA loops and instrumentation devices, as well as the ability to communicate these concepts to those working in the field. After attending this webinar you will have a strong understanding about the fundamentals of the 4-20mA current loop. You’ll be better equipped to choose the correct devices and instruments for your installation. You’ll understand when, where, or if a current loop solution is right for your application.

Webinar de Nuevos Productos

En este webinar completamente en Español, descubre cómo los productos nuevos de Precision Digital pueden ayudarte a incrementar la eficiencia y seguridad de su aplicación, mejorar la efectividad de sus transmisores, y mantener a los operadores satisfechos con una solución completa.

Precision Digital Introduces Explosion-Proof, Multi-Purpose Modbus® Scanners

October 13, 2014 – Holliston, MA - Precision Digital, global leader in digital panel meters and control instrumentation celebrating its 40th year in business, today announced the ProtEx PD6830X Modbus Scanner. The PD6830X is a rugged, explosion-proof, NEMA 4X / IP68 Modbus master, slave, or snooper (sniffer). A multi-purpose meter, it is designed for accurate display and quick access of information, locally or remotely, in hazardous areas or in the harshest safe area applications. It can accept up to 16 individually programmed process variables (PVs) from multiple devices; four math channels allow for calculations on multiple PVs. The unique SafeTouch® through-glass buttons allow operation without removing the cover. The pulse input accepts a wide range of flow transmitter signals, including mV input from a magnetic flowmeter, as well as high frequency signals. The PD6830X includes backlighting, two open collector outputs, and an analog output as standard. The scanner has FM, ATEX, CSA, IECEx, and CE approvals, enabling it to be installed almost anywhere. The PD6830X is housed in a durable, epoxy coated, cast aluminum enclosure.

ScanView EX Software for PD6830X and PD6730X Series Modbus Scanners

Configure any Vantageview PD6730X Safe Area Modbus Scanner or any ProtEX PD6830X Explosion-Proof Hazardous Area Modbus Scanner using the PC-based ScanView EX software. ScanView EX is available as a free download (adapter required). ScanView EX makes complete scanner configuration quick and easy. Copying one scanner configuration to another, as well as saving or retrieving a scanner's configuration file, is a snap. ScanView EX's intuitive layout and easy-to-understand interface make any scanner configuration simple to complete. A PDA8068 meter-to-USB adapter is available for a quick & easy PC connection. ScanView EX is an extremely useful tool that eliminates a lot of button pushing and minimizes any confusion when setting up a PD6730X or PD6830X.

Precision Digital Announces 2014 Catalog App for iPad

July 28, 2014 – Holliston, MA – Precision Digital Corporation, global leader in digital panel meters and control instrumentation celebrating its 40th year in business, today announced the 2014 Catalog App for iPad. This interactive app contains all the specifications and connection drawings from Precision Digital's print catalog in a smartly designed, easy-to-navigate interface for salespeople, OEMs, and end users. The app also includes selections from the company's extensive video library of tutorials and product demos, covering digital panel meters, process and temperature controllers, loop-powered indicators, pump controllers, and more.

Precision Digital Announces MeterView EX Programming Software for PD6730 & PD6830 Meters

March 17, 2014 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation, today announced MeterView EX Programming Software for PD6730 & PD6830 pulse input rate/totalizers. MeterView EX has been designed to offer the operator both full control and ease of use when configuring either a Vantageview PD6730 or a ProtEX PD6830 Explosion-Proof Rate/Totalizer. MeterView EX is available free here on the Precision Digital website.

MeterView EX Software for PD6830 & PD6730

Configure any Vantageview PD6730 Safe Area Meter or any ProtEX PD6830 Explosion-Proof Meter using the PC-based Meterview EX software. Meterview EX is available as a free download (serial communications adapter required). Meterview EX makes complete meter configuration quick and easy. Copying one meter configuration to another, as well as saving or retrieving a meter's configuration file, is a snap. Meterview EX's intuitive layout and easy-to-understand interface make any meter configuration simple to complete. A PDA8068 meter-to-USB adapter is available for a quick & easy PC connection. Meterview EX is an extremely useful tool that eliminates a lot of button pushing and minimizes any confusion when setting up a PD6730 or PD6830.

Vantageview Series Overview

This video will introduce you to Precision Digital's Vantageview Series, a family of NEMA 4X field-mount process indicators and rate/totalizers. The Vantageview Series includes key features that make for easy installation and convenient monitoring in the field.

Precision Digital Announces Vantageview Series of NEMA 4X, Field-Mounted Meters

January 13, 2014 - Precision Digital Corporation, global leader in digital panel meters and control instrumentation, today announced the Vantageview Series of NEMA 4X Field-Mounted Meters. The Vantageview Series offers the functionality and features of the company's ProtEX Series of Explosion-Proof Meters in an injection-molded plastic, NEMA 4X (IP65) enclosure. Vantageview meters are designed for use in demanding applications in wet or dirty environments that do not require agency approvals. They can be used for virtually any industrial process that involves level, flow, pressure, or temperature. Unique SafeTouch® through-window buttons allow operation without removing the cover. They are available in 4-20 mA loop-powered and pulse input models powered by the output loop, DC, or battery.

ProVu Batch Controllers

The PD6210 and PD6310 are powerful analog and pulse input batch controllers that expand the functionality of the ProVu with advanced control features, a specialized easy to use design, and the ability to control complicated batch processes with a device any operator can understand. See it in action!

Introducing PD6060 Dual-Input Process Meter

The ProVu Series just got smarter, with the introduction of the PD6060 Dual-Input Process Meter! See the dual-input display, math capabilities, and other great features that make this one of the most powerful Precision Digital meters available.

Trident X2 Live Feature Demonstration

Watch this live demonstration of the Trident X2 digital panel meter and see how it can improve your process. This video will show you the advantage of the Trident X2's large 1.2" display and simulate a level application.

ScanView Software for PD6080 Series Modbus Scanners

Configure, monitor, or datalog any ProVu Series Modbus Scanner using the PC-based ScanView software. ScanView is available as a free download above (serial communications adapter required). ScanView makes complete scanner configuration quick and easy. Copying one scanner configuration to another, as well as saving or retrieving a scanner configuration file, is a snap. ScanView's linearization utility makes even a 32-point linearization task clear and simple to complete. We also included a basic scanner monitor and datalogger for use with a ProVu. Of course, with ProVu's powerful Modbus protocol, custom programs can be made even more versatile. ScanView is an extremely useful tool that eliminates a lot of button pushing and minimizes any confusion when setting up a ProVu Super Snooper Modbus Scanner.

Trident Programming Series #19: Internal Calibration

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how to perform an internal calibration which allows the user to scale the meter without applying a signal.

Trident Programming Series #20: Display The Maximum & Minimum Readings

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how to display the maximum and minimum readings reached by the process or temperature inputs.

Trident Programming Series #5: Setting The Temperature Scale

Trident Programming Series #18: Using The Meter Copy Function

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how use the copy meter function which allows you to copy all settings from one meter to other meters

Trident Programming Series #17: Using The Select Menu

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will walk you through the select menu which includes linear or square root function, low flow cut-off, and display intensity.

Trident Programming Series #16: Setting Up Serial Communications

Trident Programming Series #15: Noise Filter & Noise Filter Bypass

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. The noise filter is intended to help attain a steady display with an unsteady (noisy) input signal. This installment will show how to set the noise filter and noise filter bypass values.

Trident Programming Series #14: Programming The Offset Adjustment Value

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. The offset adjustment feature can be useful to compensate for errors due to thermocouple junctions or excessive lead wire resistance in RTDs. This installment will show you how to set an offset adjustment to the temperature being displayed.

Trident Programming Series #21: Using The Diagnostics Menu

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how to access the diagnostics menu and view programmed parameter settings for troubleshooting purposes.

Trident Programming Series #8: Programming The Time Delay

Trident Programming Series #7: Setting The Fail-Safe Operation

Trident Programming Series #9: Scaling The 4-20mA Analog Output

Trident Programming Series #6: Setting Relay Operations

Trident Programming Series #4: Setting The Input Signals

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how to set up the input signals for current (4-20), voltage (0-10), thermocouple, and RTD.

Trident Programming Series #3: Setting Up The Meter

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you where to set up the input signal, decimal point position for process inputs, units for temperature inputs and analog output.

Trident Programming Series #2: Setting The Numeric Values

Trident Programming Series #1: Basic Setup of the Main Menu

Trident Programming Series #11: Programming The Meter

Trident Programming Series #10: Programming The Sensor Break Output Value

ProtEX F & I Loop-Powered Level Meter

Watch and learn about Precision Digital's ProtEX-F&I explosion-proof loop-powered level meter. This level meter displays level in feet and inches, providing simple and easy-to-understand level indication.

Trident Programming Series #12: Setting Up The Password

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will show you how to set up a four-digit password to prevent unauthorized changes to the parameter settings.

Trident Programming Series #13: The Advanced Features Menu

Watch this programming series of videos and learn how to program Precision Digital's PD765 Trident digital panel meter. Learn how to program everything from the main menu to the advanced features menu. This installment will walk you through the basic setup of the advanced features menu such as the offset adjustment, noise filter, serial communications, meter copy function, and much more.

Super Snooper Modbus Scanner Short Introduction

Watch this quick introduction on the ProVu and ProtEX-MAX Super Snoopers. These Modbus scanners display up to 16 Modbus process variables (PVs) on an RS-485 network and are easy to integrate into any existing network.

MeterView Serial Communications Using the PDA8006

The PD765 Trident series is one of Precision Digital's most trusted and proven meters ever, and it now has new serial communications capabilities to make it easier to use than ever before. Watch this short video for more information.

MeterView Pro Serial Communications Using the PDA8008

The ProVu series, Precision Digital's most advanced panel meters ever, has new and expanded software and serial communications capabilities. Watch this short video for more information.

ProtEX Explosion-Proof Meter Introduction

The ProtEX Series is a powerful line of explosion-proof meters. Learn more about this versatile line of meters with this quick overview covering the whole series, from the simple ProtEX-Lite to the powerful ProtEX-MAX.

ProtEX Approvals Overview

The ProtEX Series carries extensive international approvals for hazardous areas and has been tested for harsh enviornments. This video explains and reviews the extensive approvals carried by ProtEX meters.

ProtEX Unique Enclosure Features Review

Learn about the unique features of the ProtEX Series enclosures, including the modern appearance, wide viewing angle, and easy mounting features.

Introduction to ProtEX SafeTouch Programming

Many of Precision Digital's ProtEX Series explosion-proof instruments come standard with SafeTouch through-glass buttons; including the ProtEX-Pro, RTA, RTP, and the ProtEX-MAX. See how convenient it is!

Pump Controllers Key Features

Watch this short introduction to the PD6000, 765, and PD8 pump controllers with integrated level displays. These pump controllers include features that allow for clear and convenient level monitoring as well as multiple pump control in the most demanding applications.

Premier Products Quick Overview

Be introduced to Precision Digital's Premier Products; our most popular display and control solutions. Watch this brief overview of the ProVu, ProtEX, Trident, and Loop Leader series and quickly find the product that's best for your application

Super Snooper Modbus Scanner Introduction

Be introduced to the ProVu and ProtEX-MAX Super Snooper series of Modbus scanners. These Modbus scanners display up to 16 Modbus process variables (PVs) on an RS-485 network.

Precision Digital's New Super Snooper Modbus® Scanners Feature 1/8 DIN or Explosion-Proof Enclosures

August 26, 2013 – Holliston, MA - Precision Digital, global leader in digital panel meters and control instrumentation, today announced the Super Snooper line of Modbus® scanners, including the ProVu® PD6080 Series of 1/8 DIN digital panel meters and the ProtEX®-MAX PD8-6080 Series of explosion-proof scanners. The Super Snooper scanners can be set up as Modbus RTU Masters, Slaves, or Snoopers, monitoring multiple Modbus devices for up to 16 process variables, including level, interface level, density, and temperature. The meters also provide two independently programmed analog inputs and an array of math functions for sum, difference, average, and ratio calculations.

Precision Digital's New 1/8 DIN Dual-Input Flow Rate / Totalizers Feature Wide Range of Math Functions, Programmable Display

July 30, 2013 – Holliston, MA - Precision Digital, global leader in digital panel meters and control instrumentation, today announced the ProVu® PD6262 and PD6363 Dual-Input Flow Rate / Totalizers. The new 1/8 DIN panel meters feature independent programming of inputs, including separate selection of input type and scaling. The PD6262 panel meter supports dual analog inputs of 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, or ±10 V. The PD6363 supports dual pulse inputs, including square wave, open collector, NPN, PNP, TTL, or switch contact signals. Both meters provide integrated math functions for rate or total flow calculations: addition, difference, summation, multiplication, division, min/max, weighted average, ratio, concentration, and more.

Trident Digital Panel Meters from Precision Digital Combine Multiple Outputs, Shallow Depth Case, and Largest Display of Any 1/8 DIN Meter

May 14, 2013 – Holliston, MA- Precision Digital, global leader in digital panel meters and control instrumentation, today announced the newest version of the Trident Series Digital Panel Meters. The model PD765 is a versatile process meter that now features two relays, a 4-20mA analog output, and a 24 VDC power supply all in one meter. It is housed in a shallow, 3.6-inch depth, 1/8 DIN enclosure that features a NEMA 4X front panel. Two display heights are available: the Trident 0.56-inch (14.2 mm) display, and the Trident X2 1.2-inch (30.5 mm) display, the largest in the industry. Each display is adjustable to lighting conditions, including direct sunlight. This allows the meter to easily be read from distances up to 30 feet. For hazardous area applications, the model PD8-765 integrates all the Trident meter functions into an explosion-proof, die-cast aluminum enclosure with through-glass SafeTouch buttons and worldwide agency approvals.

ProtEX-MAX Series of Explosion-Proof Meters Approved as a Complete Product

April 23, 2013 - Holliston, MA - Precision Digital Corporation, global leader in digital panel meters and control instrumentation, is pleased to announce the complete product approval of the PD8 ProtEX-MAX Series of Explosion-Proof Meters and Controllers. The ProtEX-MAX Series has been designed to offer the functionality and features of Precision Digital's most popular safe area products, integrating any ProVu®, Trident X2 , Snooper, or Vigilante® II model into a great looking, explosion-proof product with full agency approvals.

Precision Digital Introduces Explosion-Proof, Loop-Powered, Feet & Inches Level Meter

March 25, 2013 – Holliston, MA - Precision Digital, global leader in digital panel meters and control instrumentation, today announced the PD6801 ProtEX F&I Level Meter. The PD6801 is an easy to read, explosion-proof meter designed for safe or hazardous environments, such as oil wells or chemical storage. The 4-20 mA loop-powered input displays level in feet and inches; a second line shows volume, percent, or a custom label. The meter also features a 20-segment tank level indicator that displays height. The PD6801 is optimized for wide-angle viewing of about 80°, nearly twice that of competitive models. The meter has FM, ATEX, CSA, and IECEx approvals and is housed in a rugged, cast aluminum NEMA 4X enclosure. Unique SafeTouch® through-glass buttons allow operation without removing the cover, ensuring the integrity of the unit.

Precision Digital Introduces Explosion-Proof, Multi-Powered, Pulse Input Flow Rate Meter / Totalizer

February 12, 2013 – Holliston, MA - Precision Digital, global leader in digital panel meters and control instrumentation, today announced the PD6830 ProtEX®-RTP Pulse Input Rate / Totalizer. With a rugged, explosion-proof, NEMA 4X enclosure, the PD6830 is designed for quick and easy display of local or remote flow information in hazardous areas or the harshest safe area applications. The unique SafeTouch® through-glass buttons allow operation without removing the cover. Flowmeter k-factor units are automatically converted to the desired display units; this means no conversion factors are needed. The pulse input accepts a wide range of flow transmitter signals, including mV input from a magnetic flowmeter, as well as high frequency signals. The PD6830 includes backlighting and two open collector outputs as standard. The meter has FM, ATEX, CSA, IECEx, and CE approvals and is housed in a rugged, cast aluminum NEMA 4X enclosure.

Redesigned PD6830 ProtEX Pulse Input Flow Rate/Totalizer

Combine the newly redesigned PD6830 rate totalizer with your pulse flow meters and get the most out of your application solution. It accepts a wide range of pulse inputs and provides an easy to install, intuitive to setup, information packed display.

ProVu Function Keys Tutorial

Watch and learn about the ProVu Series programmable function keys, digital inputs, and all the capabilities these features offer. All ProVu Series meters include three programmable function keys and a digital input standard.

ProVu Series Overview

Precision Digital's ProVu Series is a powerful line of 1/8 DIN meters that boasts advanced functionality for applications from flow and level monitoring to batch control. In this video, watch a quick overview of the ProVu series.

ProtEX-MAX Explosion-Proof Instrument Family

The ProtEX-MAX Series has been designed to offer the functions and features of any ProVu, Trident X2 , Snooper, or Vigilante II model in a great looking explosion-proof housing.

Trident Overview

The Model PD765 Trident digital panel meter is one of the most versatile digital panel meters on the market and will satisfy a wide variety of process applications. At 1.2", the X2 model has the largest LED display on an 1/8th DIN meter.

Trident X2 Display Advantages

The Trident X2 digital panel meter's 1.2" LED display makes it the ideal choice when upgrading your panels. Watch this video and see real examples of the Trident X2 improving existing panels with its huge display!

MeterView Pro for ProVu

Watch a real time demonstration of the PC-based MeterView Pro software, available free for any ProVu series meter. MeterView Pro makes complete meter configuration simple and fast.

ProVu Multi-Pump Alternation

In this video you will see a demonstration of the PD6000 ProVu process meter in a level application, particularly, pump-alternation control in a sump. The PD6000 boasts several features that cater to level applications, such as pump alternation control with its 6-digit dual line display and dual scale function which allows you to use both lines to display different measurement units.

Survivor PD662 Low Temperature Indicator

Check out the Survivor loop-powered temperature indicator. The PD662's heater option allows it to operate in temperatures as low as -55°C.

MeterView Pro Software for ProVu

Configure, monitor, or datalog any ProVu series meter using the PC-based MeterView Pro (MVP) software. MVP is available as a free download at www.predig.com. MVP makes complete meter configuration simple and fast. Copying one meter configuration to another, as well as saving or retrieving a meter configuration file is a snap. MVP's linearization utility makes even a 32-point linearization task clear and easy to do. We also included a basic meter monitor and data logger for use with a ProVu. Of course, with ProVu's powerful Modbus protocol, custom programs can be made even more versatile.

Watchdog PDS 178 Temperature Monitoring System Video

This video will show you a simulation of a temperature application using the PDS178 Watchdog system. See how the system scans through the channels and triggers an alarm when the temperatures exceeds the normal set point.

Nova Series Product Overview

In this video, learn all about the features of the Nova Series Temperature & Process Controllers.

Nova Programming Series

In this video, learn the basics on how to program a Nova Controller.

Nova Series Monitoring Software

In this video, learn about the key features of the Nova Monitoring software and see how it can help you monitor up to 30 controllers.

Vigilante II Annunciators Video

Precision Digital's 4 or 8 point annunciators feature alarming and monitoring capabilities for all of your level, pressure, flow, and other process switches.

MeterView Software for Trident

MeterView software allows remote programming, monitoring, and data acquisition of the Trident series. The remote programming allows for all available meter settings to be programmed from a personal computer through an easy user-friendly interface. MeterView can monitor up to 100 Trident meters, making it a great tool to bring information into the control room. Data acquisition features allows the user to data log from up to 100 meters at user-selected intervals and generate charts using common tools like Microsoft® Excel. The Trident requires a Trident serial adapter for use with a PC and MeterView.

Nova Virtual Meter

Try out the Nova Meter's many features using the Nova Virtual Meter before you buy! With the Nova Virtual Meter, you will learn how to select and scale input, program relay operations and analog outputs, set up to heat or cool, and much more.

Unlock the Potential of Your Modbus® Transmitters

Flow, level, temperature, and pressure transmitters are extremely common in the process industry. While the 4-20 mA signal loop is still extremely popular,modern transmitters are often sold with Modbus capabilities. In many cases, the 4-20 mA transmitters have Modbus capabilities that are not used, in favor of the 4-20 mA loop output. This is usually due to un- familiarity with Modbus and the ease with which the 4-20 mA loop can be used to display process variables to the operator. Another way of looking at it is that the 4-20 mA loop is used because the operators are familiar with this technology, and it’s easy to connect a panel meter or field display to the transmitter.

Best Planning Practices for Level Solutions

While level applications can be found in countless industries and applications, there are certain key elements that should be considered as part of any level control solution. Level applications can range from managing pump operation in a simple underground sump to the displaying of storage levels in a massive outdoor tank farm. In all of these applications, local display and control is critical to the success of the application solution. The best practices listed below will improve the safety, efficiency, and operator confidence in any level application.

Loop Leader Series LCD Display Cold Temperature Operating Characteristics

Precision Digital Corp. offers two different environmental temperature specifications for the Loop Leader product series. The first is an Operating Temperature Range (OTR) which is the range recommended for optimum operation. The second is Allowable Temperature Range (ATR), which is the allowed temperature exposure limits with degraded performance. On the Loop Leader series, the ATR is –40° to 65°C. The only difference between these two specifications is that the LCD display becomes less readable (contrast diminishes and the update rate slows) as it approaches the –40°C temperature stated in the ATR. Some users find this acceptable. While all LCD displays have this characteristic at very cold temperatures, the Loop Leader™ series is more affected since it has a 120-segment LCD display (vs. 28-segment on our PD686, for example). Each segment on the LCD display has a liquid crystal that begins to freeze at those temperatures. However, once the display warms back up, readability improves once again. Neither the display nor the rest of the indicator suffers any permanent damage from this low temperature exposure and the warranty is not affected.

An Introduction to Modbus® Communications

When working with digital panel meters and controllers, a lot of engineers have asked us for an introduction to Modbus® serial communications. Digital panel meters are available with a wide range of features and options. One feature common on more advanced digital panel meters is Modbus serial communications, often with RS-485, RS-232, or USB connections available. Precision Digital's ProVu® Series is a good example of this. This article will discuss what Modbus communications is, some popular ways to use it, and explain some of the terms often associated with using it.

When is a 4-20 mA Output Needed on My Panel Meter?

When working with digital panel meters and controllers, a lot of engineers have asked us when is a 4-20 mA output needed on my panel meter? Most digital panel meters, controllers, and indicators have the option of a 4-20 mA output. While a very popular feature, it is worth considering whether this output is really needed for your application, and when it might be adding needless complexity and costs to a system. In this article, we will briefly review common reasons why you would or would not need a 4-20 mA output.

ProVu Series Safety Interlock Feature

A common application for Precision Digital's ProVu series is for monitoring & alarming. In these applications, the meter is not used as a primary controller, but a safety device. As such, Precision Digital added another safety feature called Interlock Relay. This feature allows a process to use very low input signals or dry contacts to signal the ProVu that an event occurred that should cause one or more "normally opened" (N/O) assigned relay contacts to "open". While its main purpose is to remove power from a final control element in the event of a safety violation, it is likely that this feature will be used for many more applications as its configuration is very versatile.

Nova Controller Automatic/Manual Output Control Switching

A quick guide to setting up fast switching between PID (Auto) and manual control output modes on PD540 Series Nova Controllers. This makes switching modes faster and easier, without the need to enter setup menus.

Nova Controller On/Off Control Capabilities

The PD540 series Nova Digital Controller are capable of both PID and simple On/OFF control. When On/Off control is enabled, all PID based parameters and groups, such as G.PID and G.AT are disabled. During On/Off control, the Output 1 relay is locked into a control function. Sub1 and Sub2 relays (options) can be set for On/Off control or as alarms. The analog outputs maintain their normal setup options, however the control output levels will only function at 0 or 100 percent of full scale.

Nova Controller Independent Dual Manual 4-20 mA Controls

This note describes how to use a PD540 series Nova Digital Controller with two analog outputs to generate two independently controlled, manually controlled, 4-20 mA signals. The 4-20 mA signals act independently of the sensor input. To accomplish this, two types of manual 4-20 mA control must be established. One output will be tied to the Set Point. The other will be tied to the manually controlled percent full scale output.

Nova Controller 4-20 mA Output Control Using the Set Point

The PD540 Series Nova Controllers 4-20 mA output can be controlled using the set point display for easy manual control using engineering units...

Five Considerations for Selecting a Remote Level Display

Level is one of the most commonly measured process values in a wide range of applications and industries. Available level transmitters range from mechanical floats and contact probes to radar and ultrasonic sensors. Whatever the type, these transmitters are almost universally difficult and dangerous to access. Even if a display is included, the small built-in displays are difficult to read once installed. Including a remote level display showing easy to understand engineering units in a convenient location is a critical step in developing a level measurement solution. Considering the following five topics will help you create a safe, effective, and efficient level measurement system. Including the right level display to accompany a level transmitter can have a dramatic impact.

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