Precision Digital PD8-6100 User guide

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PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA Tel (800) 343-1001 • Fax (508) 655-8990

www.predig.com

• Fully-Approved Explosion-Proof Meter

• 15, 30, 150, 300 mV unipolar; ±15, ±25, ±150, ±250 mV bipolar Inputs

• Dual-Line 6-Digit Display, 0.6" (15 mm) & 0.46" (12 mm)

• Selectable 5 or 10 VDC Sensor Excitation @ 25 mA Max

• SafeTouch Through-Glass Button Programming

• Display Mountable at 0°, 90°, 180°, & 270°

• 4 Relays with Interlocking Capability + Isolated 4-20 mA Output Option

• Free PC-Based, On-Board, MeterView Pro USB Programming Software

• SunBright Display Standard Feature; Great for Outdoor Applications

• Operating Temperature Range: -40 to 60°C (-40 to 140°F)

• FM Approved as Explosion-Proof / Dust-Ignition-Proof / Flame-Proof

• CSA Certified as Explosion-Proof / Dust-Ignition-Proof / Flame-Proof

• ATEX and IECEx Certified as Flame-Proof

• Input Power Options: 85-265 VAC / 90-265 VDC or 12-24 VDC / 12-24 VAC

• Supports One (1) 350 Ω Load Cell

• Capture or Programmable Tare Feature

• Auto-Zero Feature Eliminates Zero Drift

• Ratiometric Operation

• Programmable Display, Function Keys & Digital Inputs

• Flanges for Wall or Pipe Mounting

• Explosion-Proof, IP68, NEMA 4X Die-Cast Aluminum Enclosure

• On-Board RS-485 Serial Communications

• Modbus RTU Communication Protocol Standard

• Password Protection

• Four 3/4" NPT Threaded Conduit Openings (Two Plugs Installed)

• Pipe Mounting Kits

• Stainless Steel Tag Available

• 3-Year Warranty

MeterView Pro

USB Install

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Disclaimer

The information contained in this document is subject to change without notice. Precision Digital makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. See Warranty Information and Terms & Conditions on www.predig.com for complete details.

• Read complete instructions prior to installation and operation of the meter.

• Risk of electric shock or personal injury.

• This product is not recommended for life support

applications or applications where malfunctioning could result in personal injury or property loss. Anyone using this product for such applications does so at his/her own risk. Precision Digital Corporation shall not be held liable for damages resulting from such improper use.

• Failure to follow installation guidelines could result in death or serious injury. Make sure only qualified personnel perform the installation.

• Never remove the meter cover in explosive environments when the circuit is live.

• Cover must be fully engaged to meet explosion-proof/dust-ignition-proof/flame-proof requirements.

WARNING

Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Limited Warranty

Precision Digital Corporation warrants this product against defects in material or workmanship for the specified period under

“Specifications” from the date of shipment from

the factory. Precision Digital’s liability under this

limited warranty shall not exceed the purchase value, repair, or replacement of the defective unit. See Warranty Information and Terms & Conditions on www.predig.com for complete details.

Registered Trademarks

All trademarks mentioned in this document are the property of their respective owners.

FREE MeterView Pro Programming Software

The meter can be powered from the USB connection. When using the USB connection, DO NOT apply AC or DC power to the meter.

The easiest and quickest way to program your ProtEX-MAX meter is to use the FREE MeterView Pro programming software. This software is loaded into the meter and connects and installs directly to your PC with a USB cable. We recommend that the first thing you do after taking the meter out of the box is connect the ProtEX-MAX to your PC with the provided USB cable – do not use a different cable. DO NOT apply AC or DC power to the meter while your PC is connected to the meter as it will disrupt the USB

connection. You don’t even have to apply an input

signal. MeterView Pro programming software is intuitive, and

most customers can get their meter programmed as they like without even looking in the manual.

Watch MeterView Pro Software Video at

www.predig.com/meterviewpro

In addition to programming, the software may be used for:

• Monitoring

• Datalogging using your PC

• Generating and saving programming files for

later use

Once your meter is programmed the way you want it, you can wire it up for your application per the instructions in this manual and install it. If you find that you need to make adjustments to the programming after the meter is installed, you can use the programming panel buttons and the instructions in this manual to do so.

• When using the USB connection, the meter should only be connected to a computer when both devices are in a non-hazardous area.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Table of Contents

Introduction ......................................................................................................... 7

Ordering Information .......................................................................................... 7

Key Features ....................................................................................................... 9

Specifications ................................................................................................... 14

General ................................................................................................ .......... 14

Strain Gauge Input ....................................................................................... 15

Relays ............................................................................................................ 15

USB Connection ........................................................................................... 15

Isolated 4-20 mA Transmitter Output Option ............................................. 16

RS-485 Serial Communications .................................................................. 16

Modbus® RTU Serial Communications ....................................................... 16

Digital Input (F4) ........................................................................................... 16

MeterView Pro Software .............................................................................. 16

Compliance Information................................................................................... 17

Electromagnetic Compatibility .................................................................... 17

Product Ratings and Approvals .................................................................. 17

EU Declaration of Conformity .......................................................................... 18

Safety Information ............................................................................................ 18

Installation......................................................................................................... 18

Unpacking ..................................................................................................... 18

Mounting ....................................................................................................... 19

Installation Overview ................................................................................... 21

MeterView Pro Software .............................................................................. 21

Sensor Excitation Voltage Selection (EX+, EX-) ........................................ 22

Connections ................................................................................................. 22

Required & Factory Wired Connection ....................................................... 22

PROVU Electronics Module Layout ............................................................. 23

USB Connection ........................................................................................ 23

Power Connections .................................................................................... 24

Signal Connections .................................................................................... 25

Switch Configuration .................................................................................. 25

Shunt Calibration ....................................................................................... 27

Relay Connections ..................................................................................... 27

Interlock Relay Feature .............................................................................. 27

Switching Inductive Loads.......................................................................... 28

RS-485 Connections .................................................................................. 28

RS-485 Multi-Drop Connection .................................................................. 28

F4 Digital Input Connections ...................................................................... 29

4-20 mA Output Connections ..................................................................... 29

Analog Output Power Supply ..................................................................... 29

Remote Programming ................................................................................ 29

Setup and Programming .................................................................................. 30

Overview ....................................................................................................... 30

LED Status Indicators .................................................................................. 30

Programming Buttons ................................................................................. 31

SafeTouch Buttons ...................................................................................... 31

Display Functions & Messages ................................................................... 32

Main Menu ..................................................................................................... 34

Setting Numeric Values ................................................................ ............... 34

Setting Up the Meter (setup) ....................................................................... 34

Setting the Input Signal (Input) ................................................................. 35

Setting the Display Units (units) ............................................................... 35

Setting the Display Units or Custom Tags (units) .................................... 36

Programming the Meter (prog) .................................................................. 36

Calibrating the Meter with Strain Gauge/Load Cell (Cal) ........................... 37

Setting the Display Parameter & Intensity (dsplay) .................................. 39

Display Intensity (d-Inty).......................................................................... 39

Setting the Relay Operation (relay) ........................................................... 40

Setting the Relay Action ............................................................................. 40

Programming Set and Reset Points ........................................................... 41

Setting Fail-Safe Operation ........................................................................ 41

Programming Time Delay .......................................................................... 41

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Relay and Alarm Operation Diagrams ........................................................ 41

High Alarm Operation (Set > Reset) ............................................................. 41

Low Alarm Operation (Set < Reset) ........................................................... 42

High Alarm with Fail-Safe Operation (Set > Reset) .................................... 42

Low Alarm with Fail-Safe Operation (Set < Reset)..................................... 42

Time Delay Operation ................................................................................ 42

Pump Alternation Control Operation .......................................................... 43

Relay Sampling Operation ......................................................................... 43

Relay Operation Details ............................................................................... 44

Overview .................................................................................................... 44

Relays Auto Initialization ............................................................................ 44

Fail-Safe Operation .................................................................................... 44

Front Panel LEDs ....................................................................................... 44

Latching and Non-Latching Relay Operation ............................................. 44

Non-Latching Relay (Auto) ........................................................................ 45

Non-Latching Relay with Manual Reset (A-nman) ...................................... 45

Latching Relay (LatcH) .............................................................................. 45

Latching Relay with Clear (Lt-Clr) ........................................................... 45

Acknowledging Relays ............................................................................... 46

Pump Alternation Control Applications (Altern) ....................................... 46

Setting Up the Interlock Relay (Force On) Feature .................................... 47

Scaling the 4-20 mA Analog Output (Aout) ................................................ 48

Reset Menu (reset) ...................................................................................... 48

Tare Menu (Tare) .......................................................................................... 48

Tare Functionality (tare) ........................................................................... 48

Manual Control Menu (Contrl) ................................................................... 48

Setting Up the Password (pass) .................................................................. 49

Protecting or Locking the Meter ................................................................. 49

Making Changes to a Password Protected Meter ...................................... 49

Disabling Password Protection .................................................................. 49

Advanced Features Menu ............................................................................ 50

Advanced Features Menu & Display Messages ......................................... 50

Noise Filter (filter) ................................................................................. 51

Noise Filter Bypass (bypass) ..................................................................... 51

Rounding Feature (round) ......................................................................... 51

Modbus RTU Serial Communications (serial) ......................................... 51

Select Menu (SElect) ................................................................................ 52

Input Signal Conditioning (Functn) ............................................................ 52

Auto-Zero (Auto 0) .................................................................................... 52

Low-Value Cutoff (CutofF) ........................................................................ 52

Analog Output Programming (AoutPr) ...................................................... 53

Programmable Function Keys User Menu (user) ...................................... 54

Internal Source Calibration (ICAL) ............................................................. 55

Error Message (error) .............................................................................. 55

Meter Operation ................................................................................................ 56

Button Operation .......................................................................................... 56

SafeTouch Buttons ...................................................................................... 56

Function Keys Operation ................................................................................. 57

Digital Inputs Operation ............................................................................... 57

Maximum/Minimum Readings ..................................................................... 57

Troubleshooting ............................................................................................... 58

Diagnostics Menu (diag) ............................................................................. 58

Testing the Display LEDs ........................................................................... 58

Determining Software Version ................................................................... 58

Reset Meter to Factory Defaults.................................................................. 58

Factory Defaults & User Settings ............................................................... 59

Troubleshooting Tips ................................................................................... 60

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Table of Figures

Figure 1. Enclosure Dimensions – Front View ............................................... 19

Figure 2. Enclosure Dimensions – Side Cross Section View ....................... 19

Figure 3. Sensor Excitation Voltage Selection ............................................... 22

Figure 4. Integrated PROVU Required Connections ....................................... 22

Figure 5. PROVU Electronics Module Layout .................................................. 23

Figure 6. USB Connection ............................................................................... 23

Figure 7. Power Connections .......................................................................... 24

Figure 8. Strain Gauge Configuration Switch ................................................ 25

Figure 9. Strain Gauge Powered by Internal Supply ..................................... 26

Figure 10. Strain Gauge Powered by External Supply .................................. 26

Figure 11. mV Transducer Input Connections ............................................... 26

Figure 12. Four-wire mV Transducer Connections ........................................ 26

Figure 13. Shunt Resistor ................................................................................ 27

Figure 14. Relay Connections ......................................................................... 27

Figure 15. Interlock Connections .................................................................... 27

Figure 16. AC and DC Loads Protection ......................................................... 28

Figure 17. Low Voltage DC Loads Protection ................................................ 28

Figure 18. RS-485 Diagnostic LEDs ................................................................ 28

Figure 19. Digital Input and Output Connections .......................................... 29

Figure 20. F4 Digital Input Connections ......................................................... 29

Figure 21. 4-20 mA Output Connections ........................................................ 29

Figure 22. Analog Output Supply Powering Other Devices .......................... 29

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Introduction

The ProtEX-MAX PD8-6100 is an explosion-proof digital strain gauge & load cell meter, ideal for weighing and force measurement applications. It features a dual-line display, with a main display

0.60" (15 mm) high, and a second display of

0.46" (12 mm) high superluminous LED digits, which can be read in any lighting condition, including direct sunlight. The meter is housed in a die-cast aluminum, field-mountable, NEMA 4X/IP68 rated enclosure for convenient indoor and outdoor installation.

The meter accepts mV input signals up to 300 mV. Three of the programming buttons can be custom-programmed for a specific operation. The mV input can be scaled to display the process in two different scales; for example, pounds on the main display and gallons on the second display.

A fully loaded ProtEX-MAX PD8-6100 meter comes with four SPDT relays, a 4 20 mA output, one 10 VDC sensor excitation, one 24 VDC power supply, five digital inputs and four digital outputs, and onboard RS-485 serial communications.

The four relays can be used for alarm indication or process control applications. The 4-20 mA isolated output, Modbus RTU serial communications, and digital I/O features make the ProtEX-MAX an excellent addition to any system.

SafeTouch Buttons

To make it possible to program and operate the ProtEX-MAX in a hazardous area, the programming buttons that are located behind the glass window can be operated without removing the cover by using the SafeTouch through-glass buttons. The operator puts their finger on the glass over the button and the button is actuated.

To learn more about SafeTouch buttons, see this video:

predig.com/videos/Safetouch_Buttons

Ordering Information

85-265 VAC Models

Model

Standard Features

Options Installed

PD8-6100-6H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD8-6100-6H7

4 relays 4-20 mA output

12-24 VDC Models

Model

Standard Features

Options Installed

PD8-6100-7H0

5 Digital Inputs, 4 Digital Outputs, RS-485 Communications

No options

PD8-6100-7H7

4 relays 4-20 mA output

Accessories

Model

Description

PDA0001

3/4" M-NPT to F-M20 Reducer

PDA0002

3/4" M-NPT to 1/2" F-NPT Reducer

PDAPLUG75

3/4" Metal Conduit/Stopping Plug

PDA-SSTAG

Custom Stainless Steel Tag (see website for convenient ordering form)

PDA6848

2" U-Bolt Kit Zinc Plated Steel

PDA6848-SS

2" U-Bolt Kit Stainless Steel

PDA7485-I

RS-232 to RS-485 isolated converter

PDA8485-I

USB to RS-485 isolated converter

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Helpful Videos

There are several videos that will help you get a better understating of the features and functionality of the ProtEX-MAX products. Since the ProtEX-MAX meters have the same general features and functionality of the ProVu meters, appropriate videos for the ProVu meter are also included.

ProtEX-MAX Products Overview

Learn about the complete line of ProtEX-MAX products.

predig.com/videos/ProtEXMAX_Overview

MeterView Pro Programming Software

Learn how easy it is to program the ProVu (ProtEX-MAX) process meter using MeterView Pro software.

predig.com/videos/MVPro_SW

MeterView Pro Software Demonstration

Learn how easy it is to program Precision Digital's ProVu (ProtEX-MAX) process meter for a level application using MeterView Pro PC-based programming software.

predig.com/videos/MVPro_Demo

Connect to PC for Programming

Learn how to connect a ProVu (ProtEX-MAX) process meter to your PC and install free MeterView Pro programming software.

predig.com/videos/PC_Connect

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Key Features

Connections for PD8-6100-6H7 & PD8-6100-7H7

The Only Explosion-Proof Strain Gauge and Load Cell Meter You Will Ever Need

The ProtEX-MAX PD8-6100 is a full-featured multipurpose, easy-to use digital strain gauge & load cell meter ideal for weight and force measurement applications. The meter boasts specifications, features and functionality that make it the only hazardous area strain gauge and load cell meter you will ever need.

The PD8-6100 has all the same features as our PD6100 1/8 DIN meter, but it is not just a meter stuffed in an explosion-proof enclosure like many of our competitors offer. The PD8-6100 is approved as a complete product by FM and CSA and also carries IECEx approvals. Besides being suitable for hazardous areas, the number one feature that makes the PD8-6100 such a useful device is its built-in 5, 10 or 24 VDC power supply. This feature not only saves the cost of an external power supply, but also greatly simplifies wiring. In addition, there is a second 24 VDC @ 25 mA power supply provided with the 4-20 mA output option.

The first thing you notice about the PD8-6100 is its modern looking, rugged, die-cast aluminum housing with convenient mounting flanges. Housed inside this enclosure is a dual-line, 6-digit display with high-intensity LEDs that can be read in direct sunlight. The main display can be programmed to indicate PV, maximum (peak), minimum (valley), alternating max/min, one of four alarm set points, or Modbus input. The second display can also be configured to display engineering units, set points, user defined legends, or simply turned off.

The four relays can be used for alarm indication or process control such as pump alternation control. The 4-20 mA isolated output, Modbus RTU serial communications, and digital I/O options make the PD8-6100 an excellent addition to any system. Finally, all these features and capabilities can easily be programmed without removing the cover using SafeTouch buttons in a hazardous area or with free MeterView Pro PC-based software in a safe area.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Easy Programming Methods

The ProtEX-MAX can be programmed in a hazardous area with the through-glass SafeTouch buttons without removing the cover, in a safe area with the front panel push buttons with the cover removed, or in a safe area with free, PC-based MeterView Pro software. MeterView Pro is resident on the ProtEX-MAX and is accessed by a provided USB cable, so it is by far the easiest way to program the ProtEX-MAX. The ProtEX-MAX can be calibrated either by applying a known signal or scaled by entering a desired value with the front panel buttons or MeterView Pro software. Most customers will use the scaling method because it is simpler and does not require a calibrated signal source. Selecting the input to be current or voltage is done with the front panel buttons or MeterView Pro software. Once programming is completed it can be locked with a password.

The ProtEX-MAX comes preloaded with free MeterView Pro programming software that connects and installs directly to your PC with a standard USB cable, also provided free with each instrument. This eliminates the need to insert CDs, install drivers, or download software from the internet. When you connect your ProtEX-MAX to your PC, MeterView Pro is downloaded to your PC, the software automatically

selects the model you are programming, and you’re

ready to start programming immediately. Further simplifying the programming process, the ProtEX-MAX can be powered from the USB port, so no need to apply external power while programming your meter. In addition to programming, the software will also allow you to monitor, and datalog a ProtEX-MAX using your PC. You can also generate and save programming files for later use.

Feature Rich and Flexible

Zero the Meter

The zero function zeroes out the display. In the case where there has been drift in the strain gauge output over time, zero is used to eliminate this drift and provide a true zero reading. For example, if an empty scale were to display a value other than zero, the zero function would tell the meter to show zero regardless of the current input signal.

Capture Tare

The tare function also zeroes out the display. In the case of scale weight, tare is used to eliminate container weight and provide net weight readings. If the tare value is a known constant, such as a container weight, this may be programmed in manually. The captured tare may be reset manually with any function key or digital input.

Before Tare After capture tare After reset tare

Automatic Unit Conversion

In addition to entering a custom unit or tag, pre-defined engineering units may be selected: lb, kg, ounce, gram, ton (short), tonne (metric ton). Automatic unit conversions are done when switching between pre-defined units, without the need for additional scaling. The meter converts the reading according to the unit selected. (e.g. 100.00 lb = 45.36 kg = 45359.2 g = 1600 oz).

Auto-Zero

The auto-zero feature corrects for drift that can occur over time that causes the input signal to slowly change. The meter will continue to read zero despite slow and small changes to the input signal around zero. The auto-zero sensitivity is set by the user as a percent of full scale.

Shunt Calibration Check

The PD8-6100 is equipped with a means of simulating strain in a strain gauge bridge circuit, via an included shunt resistor in the meter. This technique can be used as a means of verifying the meter setup and output behavior by simulating a physical input. With no load connected, the enabling of the shunt resistor will simulate a 70% full scale load in the case of a 350 Ω Strain Bridge.

Ratiometric Compensation

This feature compensates for changes in the strain gauge input signal that are due to variations in the internal or external excitation voltage. The compensation is effective for up to ±5% variation in the excitation power supply.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Advanced Display Features

Dual-Line Makes All the Difference

The main display can be programmed to indicate PV, maximum (peak), minimum (valley), alternating maximum/minimum, one of four alarm set points, or Modbus® input. The second display can be configured to display the input in a different scale, engineering units, set points, user defined messages, or simply turned off.

The ProtEX-MAX's dual-line display makes all the difference both when programming the instrument and when using it in the field. When programming the instrument, the dual-line display prompts for the needed information and also helps you keep track of where you are in the setup process. When using the instrument, the dual-line display provides more information such as displaying the input in two different scales like height and volume for a level application. We call this the Dual-Scale feature.

Programming Assistance

The ProtEX-MAX's dual-line display makes programming the instrument much easier because the second display prompts for the needed information and also helps you keep track of where you are in the setup process.

The ProtEX-MAX is prompting for the value for Input 2 and displaying the default value of 100 mV. The “0” is brighter than the rest of the digits indicating that it is the number that will be changed by the Up arrow.

The ProtEX-MAX is now prompting for what the user wants Display 2 to be; that is the value that corresponds to 100 mV. In this case Display 2 is currently set to 100.00.

Dual-Scale Display Feature

The ProtEX-MAX PD8-6100 has a rather unique, and very flexible dual-scale capability; a second scaled display can represent the measured input in a different form (i.e. gallons & height). This is of particular value in weight applications. Please see the examples shown below.

Volume & Height Force & mV

Other Uses for Second Line

The second line can also be used indicate units, net and gross, a tag, or even a setpoint as the following pictures illustrate:

Weight & Units Net & Gross

mV & Setpoint Weight & Max (Peak)

Rounding for Steadier Display

The rounding feature is used to give the user a steadier display with fluctuating signals. It causes the display to round to the nearest value according to the rounding value selected (1, 2, 5, 10, 20, 50, or 100). For example, with a rounding value of 10, and an input of 12346, the display would indicate 12350.

Super-Bright Display

The ProtEX-MAX comes standard with a super-bright display, with LEDs that are visible even in direct sunlight. The display also has up to eight levels of adjustable intensity for optimum visibility in any lighting condition.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Physical Features

The ProtEX-MAX is designed for ease-of-use in safe and hazardous applications. The ProtEX-MAX is housed in a rugged NEMA 4X explosion-proof enclosure, can operate over a wide temperature range, includes removable screw terminal connectors, has worldwide approvals for use in hazardous areas, and features through-glass buttons for easy controller operation without the need to remove the cover. All of these features are backed by a 3-year warranty.

Super-Bright LED Display

The ProtEX-MAX features a dual-line 6-digit display with super-bright LEDs, our brightest ever. These allow the display to be read in any lighting condition, even in direct sunlight.

SafeTouch Through-Glass Buttons

The ProtEX-MAX is equipped with four sensors that operate as through-glass buttons so that it can be programmed and operated without removing the cover (and exposing the electronics) in a hazardous area. These buttons can be disabled for security by selecting the DISABLE setting on the NO-CONTACT BUTTONS switch located on the back of the electronics module, inside the enclosure.

Rugged, Heavy-Duty Enclosure

The ProtEX-MAX is housed in a rugged NEMA 4X, 7, & 9, IP68 die-cast aluminum enclosure, designed to withstand harsh environments in safe and hazardous areas over a wide temperature range.

Wide Viewing Angle

Customers can’t always look at the display from

straight on, so the window and display module have been optimized to provide a wide viewing angle of approximately ±40°; nearly twice that of the competition.

Built-In Mounting Flanges

The ProtEX-MAX is equipped with four slotted flanges for wall mounting or NPS 1½" to 2½" or DN 40 to 65 mm pipe mounting.

Flexible Mounting & Wiring

The ProtEX-MAX features four ¾" NPT threaded conduit openings so that wiring can be routed to the most convenient conduit connection(s). Two ¾" NPT metal conduit plugs with 12 mm hex key fitting come installed.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Rotatable Display

The ProtEX-MAX rotatable display, along with four available conduit connections, provide for numerous installation options. The display can be rotated in 90° increments. Rotate it 90° for horizontal mounting.

Vertical Mounting Horizontal Mounting

Perfect & Secure Fit Every Time

The internal cast rails ensure the ProtEX-MAX assembles together perfectly, quickly and securely; and everything lines up for optimal viewing every time. There are no standoffs to worry about breaking or getting out of alignment. Two spring-loaded, self-retaining, thumbscrews make the assembly a snap, while pressing the display as close to the glass as possible to improve wide angle viewing.

Stainless Steel Tags

PDA-SSTAG is a laser etched stainless steel tag accessory for any of your Precision Digital meters. The tag features custom text for equipment identification, instruction, or whatever else is needed in your facility. Each tag comes with a stainless steel wire and lead seal for easy mounting wherever you need it.

Removable Screw Terminals

Industrial applications require screw terminal connections for easy field wiring, and the ProtEX-MAX goes one step further in convenience by also making them removable.

Note: The above photograph is representative of the back of the PD8-6100 in every regard except for the signal input connector. See PROVU Electronics Module Layout for PD8-6100-6H7 and PD8-6100-7H7 on page 23 for actual input signal connections.

USB Port MeterView Pro

Hazardous Area Approvals

The ProtEX-MAX's approvals allow it to be used in hazardous areas around the world. These include: FM Approved as Explosion-Proof / Dust-Ignition-Proof / Flame-Proof, CSA Certified as Explosion-Proof / Dust-Ignition-Proof, and ATEX and IECEx Certified as Flame-Proof.

Wide Operating Temperature Range

The ProtEX-MAX can operate from -40 to 60°C (-40 to 140°F) meaning it can be installed in a wide variety of indoor and outdoor industrial applications. And over this range, the ProtEX-MAX will drift no more than 0.005% of calibrated span/°C max from 0 to 65°C ambient and 0.01% of calibrated span/°C max from -40 to 0°C ambient.

USB cable conveniently

plugs into side of

ProtEX-MAX meter

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Specifications

Except where noted all specifications apply to operation at +25°C.

General

Display

Display Line 1: 0.60" (15 mm) high, red LEDs

Display Line 2: 0.46" (12 mm) high, red LEDs

6 digits each (-99999 to 999999), with lead zero blanking

Display Intensity

Eight user selectable intensity levels. Default value is six.

Display Update Rate

5/second (200 ms)

LED Status Indicators

See LED Status Indicators on page 30 for details.

Overrange

Display flashes 999999

Underrange

Display flashes -99999

Display Assignment

Display Line 1: PV1, PV2, PCT, max & min, set points, PV & units, net & gross weight, Modbus input, millivolts. Display line 2: Same as Display Line 1; plus units, tag or turned off.

Units

Predefined: lb, kg, ounce, gram, ton, metric ton (tonne); and custom units.

Programming Methods

Four SafeTouch through-glass buttons when cover is installed. Mechanical buttons can be used with the cover removed. Free PC-based USB MeterView Pro programming software.

Noise Filter

Programmable from 2 to 199 (0 will disable filter)

Filter Bypass

Programmable from 0.1 to 99.9% of calibrated span

Recalibration

All ranges are calibrated at the factory. Recalibration is recommended at least every 12 months.

Max/Min Display

Max/min readings reached by the process are stored until reset by the user or until power to the meter is cycled.

Rounding

Select 1, 2, 5, 10, 20, 50, or 100 (e.g. rounding = 10, value = 123.45, display = 123.50).

Tare

There are three modes of tare operation: Capture Tare, Programmable Tare, and Off. See Tare Functionality (tare) on page 48 for details.

Password

Three programmable passwords restrict modification of programmed settings.

Pass 1: Allows use of function keys and digital inputs

Pass 2: Allows use of function keys, digital inputs and editing set/reset points

Pass 3: Restricts all programming, function keys, and digital inputs.

Non-Volatile Memory

All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.

Power Options

85-265 VAC 50/60 Hz; 90-265 VDC, 20 W max; 12-24 VDC, 12-24 VAC, 15 W max. Powered over USB for configuration only.

Fuse

Required external fuse: UL Recognized, 5 A max, slow blow; up to 6 meters may share one 5 A fuse

Normal Mode Rejection

Greater than 60 dB at 50/60 Hz

Isolation

4 kV input-to-power line 500 V input-to-output (powered by external supply)

Overvoltage Category

Installation Overvoltage Category II: Local level with smaller transient overvoltages than Installation Overvoltage Category III.

Environmental

T6 Class operating temperature range Ta = -40 to 60°C T5 Class operating temperature range Ta = -40 to 65°C

Storage temperature range:

-40 to 85°C (-40 to 185°F) Relative humidity:

0 to 90% non-condensing

Max Power Dissipation

Maximum power dissipation limited to 15.1 W

Connections

Power, signal, relays, mA out: Removable screw terminal blocks accept 12 to 22 AWG wire.

RS-485: Removable screw terminal block accepts 16 to 30 AWG wire.

Digital I/O: Removable screw terminal blocks accept 16 to 30 AWG wire.

Enclosure

Explosion-proof die-cast aluminum with glass window, corrosion resistant epoxy coating, color: blue

NEMA 4X, 7, & 9, IP68 Default conduit connections: Four ¾" NPT

threaded conduit openings and two ¾" NPT metal conduit plugs with 12 mm hex key fitting installed. Additional conduit opening configurations may be available; verify quantity and sizes on specific device labeling during installation.

Mounting

Wall Mounting: Four (4) mounting holes provided for mounting meter to wall. See Wall Mounting Instructions on page 19 for additional details.

Pipe Mounting: Optional pipe mounting kit (PDA6848) allows for pipe mounting. Sold separately. See Pipe Mounting Instructions on page 20 for additional details.

Tightening Torque

Power, signal, relays, mA out terminals: 5 lb-in (0.56 Nm)

Digital I/O and RS-485:

2.2 lb-in (0.25 Nm)

Overall Dimensions

6.42" x 7.97" x 8.47" (W x H x D) (163 mm x 202 mm x 215 mm)

Weight

16.0 lbs (7.26 kg)

Warranty

3 years parts & labor. See Warranty Information and Terms & Conditions on

www.predig.com for complete details.

Page 15

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Strain Gauge Input

Inputs

Field selectable: 0-15 mV, 0-30 mV, 0-150 mV, 0-300 mV, ±15 mV, ±25 mV, ±150 mV, ±250 mV, or Modbus PV (Slave)

Isolated Sensor Power Supply

Terminals EX+ & EX-: 10 VDC or 5 VDC  10%, rated @ 25 mA max.

Note: Do not use 24 VDC to power strain gauge bridge.

Accuracy

±0.03% of calibrated span ±1 count

Minimum Load Resistance

14 Ω @ 5 V 28 Ω @ 10 V

Maximum Excitation Current

25 mA @ 5 V or 10 V

Temperature Drift

0.002% of calibrated span/C max from 0 to 65C ambient, 0.005% of calibrated span/C max from -30 to 0C ambient

Functions

Linear with multi-point linearization

Multi-Point Linearization

2 to 32 points for PV or PV1 2 to 8 points for PV2 (Dual-scale feature)

Low Cutoff

0.1 to 999,999 (0 disables cutoff function). Point below at which display always shows zero.

Decimal Point

Up to five decimal places or none: d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd

Calibration Range

Input Range

Minimum Span Input 1 & Input 2

15 mV

0.2 mV

25 mV, 30 mV

0.4 mV

150 mV

2.0 mV

250 mV, 300 mV

4.0 mV

An Error message will appear if the input 1 and input 2 signals are too close together.

Input Impedance

Strain Gauge Bridge: Greater than 10 MΩ mV Source: 200 kΩ

Relays

Rating

4 SPDT (Form C) internal and rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads

Noise Suppression

Noise suppression is recommended for each relay contact switching inductive loads; see Switching Inductive Loads on page 27 for details.

Deadband

0-100% of span, user programmable

High or Low Alarm

User may program any alarm for high or low trip point.

Unused alarm LEDs and relays may be disabled (turn off).

Relay Operation

• Automatic (non-latching) and/or manual reset

• Latching (requires manual acknowledge) with or without clear

• Pump alternation control (2 to 4 relays)

• Sampling (based on time)

• Off (disable unused relays and enable

Interlock feature)

• Manual on/off control mode

Relay Reset (Acknowledge)

User selectable via front panel button, F4 digital input, external contact closure on digital inputs, or through serial communications.

Time Delay

0 to 999.9 seconds, on & off relay time delays. Programmable and independent for each relay

Fail-Safe Operation

Programmable and independent for each relay.

Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.

Auto Initialization

When power is applied to the meter, relays will reflect the state of the input to the meter.

USB Connection

Function

Programming only

Compatibility

USB 2.0 Standard, Compliant

Connector Type

Micro-B receptacle

Cable

USB A Male to Micro-B Cable

Driver

Microsoft® Windows® XP/Vista/7/8/10

Power

USB port provides power to the meter.

DO NOT apply AC or DC power to the meter while the USB port is in use.

Page 16

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Isolated 4-20 mA Transmitter Output Option

Output Source

Process variable (PV), max, min, set points 1-4, Modbus input, or manual control mode

Scaling Range

1.000 to 23.000 mA for any display range

Calibration

Factory calibrated:

0.00 to 100.00 = 4-20 mA output

Analog Output Programming

1.000 mA minimum and 23.000 mA

maximum for all parameters: overrange, underrange, max, min, and break

Accuracy

± 0.1% of span ± 0.004 mA

Temperature Drift

0.4 µA/C max from 0 to 65C ambient,

0.8 µA/C max from -40 to 0C ambient

Note: Analog output drift is separate from input drift.

Isolated Transmitter Power Supply

Terminals I+ & R: 24 VDC  10% isolated from the input at >500 V. Used to power the 4-20 mA output Refer to Figure 5.

PROVU Electronics Module Layout on page 23 and Figure 21. 4-20 mA Output Connections on page 29.

All models rated @ 25 mA max.

External Loop Power Supply

35 VDC maximum

Output Loop Resistance

Power supply

Minimum

Maximum

24 VDC

10 

700 

35 VDC (external)

100 

1200 

RS-485 Serial Communications

Compatibility

EIA-485

Connectors

Removable screw terminal connector

Max Distance

3,937' (1,200 m) max

Status Indication

Separate LEDs for Power (METER LINK), Transmit (TX), and Receive (RX)

Modbus® RTU Serial Communications

Slave ID

1 – 247 (Meter address)

Baud Rate

300 – 19,200 bps

Transmit Time Delay

Programmable between 0 and 199 ms

Data

8 bit (1 start bit, 1 or 2 stop bits)

Parity

Even, Odd, or None with 1 or 2 stop bits

Byte-to-Byte Timeout

0.01 – 2.54 second

Turn Around Delay

Less than 2 ms (fixed)

Note: Refer to the ProtEX-MAX Modbus Register Tables located at www.predig.com for details.

Digital Input (F4)

Function

Operate tare function, remote operation of front-panel buttons, acknowledge/reset relays, reset max/min values. See Function Keys & Digital I/O Available Settings on page 54 for a complete list of capabilities.

Contacts

3.3 VDC on contact. Connect normally

open contacts across F4 to COM

Logic Levels

Logic High: 3 to 5 VDC Logic Low: 0 to 1.25 VDC

MeterView Pro Software

Availability

Download directly from meter or from

www.predig.com/download_software

System Requirements

Microsoft® Windows® XP/Vista/7/8/10

Communications

USB 2.0 (for programming only) (USB A Male to Micro-B Cable)

RS-485 to USB converter (programming, monitoring, and data logging)

Configuration

Configure meters one at a time

Power

USB port provides power to the meter.

DO NOT apply AC or DC power to the meter while the USB port is in use.

Page 17

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Compliance Information

Electromagnetic Compatibility

Emissions

EN 55022 Class A ITE emissions requirements

Radiated Emissions

Class A

AC Mains Conducted Emissions

Class A

Immunity

EN 61326-1 Measurement, control, and laboratory equipment EN 61000-6-2 EMC heavy industrial generic immunity standard

RFI - Amplitude Modulated

80 -1000 MHz 10 V/m 80% AM (1 kHz)

1.4 - 2.0 GHz 3 V/m 80% AM (1 kHz)

2.0 - 2.7 GHz 1 V/m 80% AM (1 kHz)

Electrical Fast Transients

±2kV AC mains, ±1kV other

Electrostatic Discharge

±4kV contact, ±8kV air

RFI Conducted

10V, 0.15-80 MHz, 1kHz 80% AM

AC Surge

±2kV Common, ±1kV Differential

Surge

1KV (CM)

PowerFrequency Magnetic Field

30 A/m 70%V for 0.5 period

Voltage Dips

40%V for 5 & 50 periods 70%V for 25 periods

Voltage Interruptions

<5%V for 250 periods

Note: Testing was conducted on meters with cable shields grounded at the point of entry representing installations designed to optimize EMC performance.

Product Ratings and Approvals

Enclosure: Type 4X; IP66 Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1, T5/T6 Class I, Zone 1, AEx d, IIC Gb T5/T6 Zone 21, AEx tb IIIC T90°C; Ta = -40°C to +65°C T6 Ta = -40°C to +60°C; T5 Ta = -40°C to +65°C Certificate Number: 3047283

CSA

Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1 Class I Zone 1 Ex d IIC Zone 21 Ex tb IIIC T90°C

-40°C < Tamb. < +60° C; Temperature Code T6

-40°C < Tamb. < +65° C; Temperature Code T5 Enclosure Type 4X & IP68 Certificate Number: 2531731

ATEX

II 2 G D

Ex d IIC T* Gb Ex tb IIIC T90°C Db IP68 Ta = -40°C to +*°C *T6 = -40°C to +60°C *T5 = -40°C to +65°C Certificate number: Sira 12ATEX1182

IECEx

Ex d IIC T* Gb Ex tb IIIC T90°C Db IP68 Ta = -40°C to +*°C *T6 = -40°C to +60°C *T5 = -40°C to +65°C Certificate Number: IECEx SIR 12.0073

Special Conditions for Safe Use:

Use suitably certified and dimensioned cable entry device and/or plug. The equipment shall be installed such that the supply cable is protected from mechanical damage. The cable shall not be subjected to tension or torque. If the cable is to be terminated within an explosive atmosphere, then appropriate protection of the free end of the cable shall be provided. Cable must be suitable for 90°C.

Year of Construction

This information is contained within the serial number with the first four digits representing the year and month in the YYMM format.

For European Community: The ProtEX-MAX must be installed in accordance with the ATEX directive 94/9/EC, and the product certificate Sira 12ATEX1182.

Page 18

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

EU Declaration of

Conformity

EU Declaration of Conformity is available in the Documentation CD provided with the product under the EU DoC menu.

Safety Information

• Read complete instructions prior to installation and operation of the meter.

• Risk of electric shock or personal injury.

• Hazardous voltages exist within enclosure.

Installation and service should be performed only by trained service personnel.

Installation

Install in accordance with applicable local and national regulations (e.g. NEC).

For Installation in USA The ProtEX-MAX must be installed in accordance with the National Electrical Code (NEC) NFPA

70.

For Installation in Canada

The ProtEX-MAX must be installed in accordance with the Canadian Electrical Code CSA 22.1. All power supplies below 36 V and input circuits must be derived from a CSA Approved Class 2 source.

For European Community

The ProtEX-MAX must be installed in accordance with the ATEX directive 94/9/EC and the product certificate Sira 12ATEX1182.

• Disconnect from supply before opening enclosure.

• Keep cover tight while circuits are live.

• Conduit seals must be installed within 18"

(450mm) of the enclosure or within 2" (50mm) for Zone installations.

Wiring connectors are accessed by opening the enclosure. To access electrical connectors, remove the 2 captive screws and then remove the electronics module. Connectors are on the rear of the electronics module.

Unpacking

Remove the meter from box. Inspect the packaging and contents for damage. Report damages, if any, to the carrier.

If any part is missing or the meter malfunctions, please contact your supplier or the factory for assistance.

Pre-Installed Conduit Plugs

The ProtEX-MAX is supplied with two pre-installed conduit plugs for installations that do not require the use of all four conduit entries. The conduit/stopping plugs include an internal hexagonal socket recess for removal. The conduit plugs and their factory installation are included in all hazardous area approvals of this product.

• In hazardous areas, conduit and conduit/stopping plugs require the application of non-setting (solvent free) thread sealant. It is critical that all relevant hazardous area guidelines be followed for the installation or replacement of conduit or plugs.

Cover Jam Screw

The cover jam screw should be properly installed once the meter has been wired and tested in a safe environment. The cover jam screw is intended to prevent the removal of the meter cover in a hazardous environment without the use of tools. Using a M2 hex wrench, turn the screw clockwise until the screw contacts the meter. Turn the screw an additional 1/4 to 1/2 turn to secure the cover.

• Excess torque may damage the threads, screw head, and wrench.

Page 19

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Mounting

The ProtEX-MAX has four slotted mounting flanges that may be used for pipe mounting or wall mounting. Refer to Figure 1 and Figure 2 below.

• Do not attempt to loosen or remove flange bolts while the meter is in service.

Mounting Dimensions

All units: inches (mm)

Figure 1. Enclosure Dimensions – Front View

Figure 2. Enclosure Dimensions –

Side Cross Section View

Wall Mounting Instructions

The meter can be mounted to any wall or flat surface using the four provided mounting holes located in the cast-in flanges. In addition, the internal electronic assembly can be rotated to allow the enclosure to be mounted in any position. To mount the meter to a wall, follow these instructions:

• Prepare a section of wall approximately 7" x 8.5" (178 mm x 216 mm) for meter mounting by marking with a pencil the mounting holes (shown in Figure 1) on the wall.

• Select the appropriate mounting screws for the mounting surface to be used. The mounting holes diameter is shown on Figure 1.

Note: Mounting screws are not included.

• Using a drill bit slightly smaller than the girth of the mounting screws, pre-drill holes at the mounting locations previously marked.

• Insert mounting screws into the four mounting holes and screw them into the pre-drilled holes.

Page 20

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Pipe Mounting Instructions

The meter can also be mounted to a pipe using an optional U-Bolt kit. This kit includes two U-bolts, the necessary hardware, and is available in zinc plated steel (PDA6848) and 316 stainless steel (PDA6848-SS).

To mount the meter using a U-Bolt kit, follow these instructions:

• Orient the groove on the back of the instrument with the pipe and secure it to the pipe with the two U-bolts and hardware provided.

Vertical Pipe Mounting

Horizontal Pipe Mounting

Page 21

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Installation Overview

We recommend the following sequence for getting the meter into service:

1. DO NOT apply AC or DC power to the meter.

2. Connect the meter to the PC with the USB cable provided. DO NOT use a different USB cable.

3. If MeterView Pro (MVPro) is already installed in your computer, then the program will launch automatically in most systems. If the program does not start automatically, double-click on the MVPro icon.

4. If MVPro is not installed, follow the instructions provided below.

5. Use MVPro to configure the meter for your application.

6. Disconnect the USB cable from the meter.

7. Apply power and signal and check operation of the meter.

8. Install the meter and put into service.

9. Make any programming adjustments using the programming buttons.

MeterView Pro Software

The easiest and quickest way to program your ProtEX-MAX meter is to use the FREE MeterView Pro programming software. This software is loaded into the meter and connects and installs directly to your PC with the USB cable provided. DO NOT use a different USB cable. We recommend that the first thing you do after taking the meter out of the box is connect the ProtEX-MAX to your PC with the provided USB cable. DO NOT apply AC or DC power to the meter while your PC is connected to the meter as it will disrupt the USB connection. It is not necessary to apply an input signal.

MeterView Pro programming software is intuitive, and most customers can get their meter programmed as they like without even looking in the manual.

Watch Meterview Pro Software Video at

www.predig.com/meterviewpro

MeterView Pro Installation

1. Connect one end of the provided USB cable

to the meter and the other end to the computer. The computer will automatically install the driver software it needs to talk to the meter. Follow the on-screen instructions and allow sufficient time for the process to complete. This can take a few minutes. If the process is interrupted, then it could leave the system in an unstable condition.

• Only one meter may be connected at a time. Attaching multiple meters will cause a conflict with the meter software.

• DO NOT apply AC or DC power to the meter when using the USB connection.

• When using the USB connection, the meter should only be connected to a computer when both devices are in a non-hazardous area.

2. Once the driver is installed, an AutoPlay dialog should appear for the drive

“MAINSTAL.” Click “Open folder to view

files.”

If the computer does not display an AutoPlay

dialog for the drive “MAINSTAL,” you should

open My Computer and double-click on the drive labeled “MAINSTAL.”

3. Double-click on the file named “MAStart.” The program will open a few windows and install two programs on your computer. Simply follow the on-screen instructions until you see one of the dialogs below. If you

receive a “User Account Control” warning,

click “Yes.”

4. If there is an update available, click the

“Update” button to install the new version. Otherwise, click “Configure” to begin

programming your meter.

Note: If you decide to update your MeterView Pro software, once the installation has completed, you will be asked if you want to update the setup files located on the meter itself. This way, you will always have the most current version on the meter for future installs.

• DO NOT unplug the meter while the new installation files are being written to it. The meter will display uwrite during the process and you will receive an on-screen notification once the process is complete.

• Do not disconnect and reconnect the scanner rapidly. Allow at least 10 seconds from disconnection before reconnecting USB to the meter.

Page 22

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Sensor Excitation Voltage Selection (EX+, EX-)

All meters, including models equipped with the 12-24 VDC power option, are shipped from the factory configured to provide 10 VDC excitation for the sensor.

If the sensor requires 5 VDC excitation, the internal jumper J3 must be configured accordingly.

To access the voltage selection jumper:

1. Remove all the wiring connectors.

2. Unscrew the back cover.

3. Slide out the back cover by about 1½ inches.

4. Configure the J3 jumper, located behind the input signal connector, for the desired excitation voltage as shown.

• Do not use 24 V to power a strain gauge bridge. The 24 V jumper configuration should only be used for mV input applications from 4-wire sensors.

Figure 3. Sensor Excitation Voltage Selection

Connections

All connections are made to removable screw terminal connectors located at the rear of the meter.

• Use copper wire with 60°C or 60/75°C insulation for all line voltage connections. Observe all safety regulations. Electrical wiring should be performed in accordance with all applicable national, state, and local codes to prevent damage to the meter and ensure personnel safety.

• Observe all safety regulations. Electrical wiring should be performed in accordance with all agency requirements and applicable national, state, and local codes to prevent damage to the meter and ensure personnel safety.

• Static electricity can damage sensitive components.

• Observe safe handling precautions for

static-sensitive components.

• Use proper grounding procedures/codes.

• If the instrument is installed in a high voltage

environment and a fault or installation error occurs, high voltage may be present on any lead or terminal.

• Follow all fusing and wiring precautions requirements for the instrument integrated to the PD8 Series model number being connected.

To access the connectors, remove the enclosure cover and unscrew the two captive screws that fasten the electronics module. Signal connections are made to de-pluggable connectors on the back of the electronics module.

Some connectors may be provided already connected. These connections are required for proper operation of the ProtEX-MAX and should not be removed unless instructed to by this manual.

Wires marked as being used for testing purposes should be removed.

Grounding connections are made to the two ground screws provided on the base – one internal and one external.

After all connections have been completed and verified, apply power to the unit.

Required & Factory Wired Connection

The ProtEX-MAX comes with a pre-wired connection. This connection is detailed below and must be maintained in order for the instrument to function properly.

Figure 4. Integrated PROVU Required Connections

Page 23

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

PROVU Electronics Module Layout for PD8-6100-6H7 and PD8-6100-7H7

Figure 5. PROVU Electronics Module Layout

USB Connection

Figure 6. USB Connection

• DO NOT disconnect the RJ45 M-LINK connector cable. Otherwise the instrument will not function properly.

• When using the USB connection, the meter should only be connected to a computer when both devices are in a

non-hazardous area.

Page 24

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Power Connections

Power connections are made to a two-terminal connector labeled POWER. The meter will operate regardless of DC polarity connection. The + and symbols are only a suggested wiring convention. There are separate models for low voltage and high voltage power. See Ordering Information on page 7 for details.

Figure 7. Power Connections

AC or DC

POWER

Required External Fuse:

5 A max, 250 V Slow Blow

POWER

Page 25

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Signal Connections

Signal connections are made to a six-terminal connector labeled SIGNAL. The EX+ and EXterminals are used to sense the sensor excitation voltage for ratiometric operation when the sensor is powered externally (switch 1 is off).

Switch Configuration

Setup and programming is performed both through the programming buttons and switch settings shown below. The switch configuration must correspond to the Setup and Programming starting on page 30 (same range, type, etc.).

Figure 8. Strain Gauge Configuration Switch

Excitation (Switch 1)

The excitation switch designates whether the meter will use its internal power supply or an external power supply.

OFF

Excitation

External Excitation

When switch is turned OFF, an external power supply is used.

Excitation

Internal Excitation

When switch is turned ON, the ProtEX-MAX's power supply is used.

Range (Switch 2)

The range switch adjusts the gain of the internal circuitry. Narrower ranges require more amplification.

OFF

Range

Lower internal gain

Turn this switch OFF for the following input ranges: 150, 300, ±150, or ±250 mV.

Range

Higher internal gain

Turn this switch ON for the following input ranges: 15, 30, ±15, or ±25 mV.

Polarity (Switch 3)

The polarity switch selects whether the range is unipolar and starts at zero (i.e. 0 to 30 mV) or bipolar and starts at a negative value, or below zero (i.e. -15 to +15 mV).

OFF

Polarity

Range starts below zero (bipolar)

Turn this switch OFF for the following input ranges: ±15, ±25, ±150, or ±250 mV.

Polarity

Range starts at zero (unipolar)

Turn this switch ON for the following input ranges: 15, 30, 150, or 300.

Source (Switch 4)

The source switch tells the ProtEX-MAX whether the input is a strain gauge bridge or it is a signal from a 2 or 4 wire transducer, or mV source (i.e. Figure 11. mV Transducer Input Connections, page 26)

OFF

Source

Source is strain gauge bridge

Turn this switch OFF if the source is a strain gauge bridge

Source

Source is mV input transducer

Turn this switch ON if the connected source is a transducer*

*Ratio should be set to NO in Setup Input Menu

COM SG-F4 SG+EX-

3412 5

EX+

SIGNAL

Page 26

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Shunt Resistor (Switch 5)

The PD8-6100 provides a means of simulating strain in a strain gauge bridge circuit via a 60.4KΩ shunt resistor included in the meter. This will simulate an approximate 70% full-scale load in the case of a 350Ω strain bridge.

OFF

Shunt

Shunt resistor is disconnected from the input bridge.

Turn this switch OFF to remove the shunt resistor

Shunt

Shunt resistor is connected to the input bridge.

Turn switch ON when you want to simulate a strain load

Strain Gauge Connections

The following figures show examples of strain gauge connections.

There is a 5-position DIP switch (CONFIG) to set up the input ranges and sensor excitation.

Note: Refer to Switch Configuration on page 25 for proper configuration switch positioning.

Figure 9. Strain Gauge Powered by

Internal Supply

Figure 10. Strain Gauge Powered by

External Supply

Figure 11. mV Transducer Input Connections

Figure 12. Four-wire mV Transducer Connections

Notes

1. Two-wire mV signals: Connect positive to SG+ and

negative to SG-

2. Three-wire transducer: Connect EX- to SG-

Page 27

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Shunt Calibration

The PD8-6100 is equipped with a means of simulating strain in a strain gauge bridge circuit, via a shunt resistor included inside the meter. This technique is

performed by enabling the “shunt resistor” switch

(switch 5), which in turn shunts one leg of a connected strain bridge with a predetermined resistive load (60.4k). This technique can be used as a means of verifying instrumentation by simulating a physical input. With no load connected, the enabling of the shunt resistor (switch 5) will simulate approximately a 70% F.S. load in the case of a 350Ω Strain Bridge.

Figure 13. Shunt Resistor

Relay Connections

Relay connections are made to two six-terminal connectors labeled RELAY1 – RELAY4. Each relay’s C terminal is common only to the normally open (NO) and normally closed (NC) contacts of the

corresponding relay. The relays’ C terminals should

not be confused with the COM (common) terminal of the INPUT SIGNAL connector.

Figure 14. Relay Connections

Interlock Relay Feature

As the name implies, the interlock relay feature reassigns one, or more, alarm/control relays for use as interlock relay(s). Interlock contact(s) are wired to digital input(s) and activate the interlock relay. This feature is enabled by configuring the relay, and the corresponding digital input(s), see Setting Up the Interlock Relay (Force On) Feature on page 47.

In the example below, an Interlock Contact switch is connected to a digital input, which will be used to force on (energize) the Interlock Relay. The Interlock Relay and the Control Relay are connected in series with the load.

• When the Interlock Contact is closed (safe), the Interlock Relay energizes, allowing power to flow to the Control Relay; the corresponding front panel LED is on.

• When the Interlock Contact is open, the corresponding front panel LED flashes (locked out), the Interlock Relay is de-energized, preventing power from flowing to the Control Relay and the load.

Figure 15. Interlock Connections

EX+

EX-

SG- SG+

C NONO NC NC C

RELAY4 RELAY3

4 36 5 2 1

C NONO NC NC C

RELAY2 RELAY1

4 36 5 2 1

Page 28

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Switching Inductive Loads

The use of snubbers to suppress electrical noise is strongly recommended when switching inductive

loads to prevent disrupting the microprocessor’s

operation. The snubbers also prolong the life of the relay contacts. Suppression can be obtained with resistor-capacitor (RC) networks assembled by the user or purchased as complete assemblies. Refer to the following circuits for RC network assembly and installation:

Figure 16. AC and DC Loads Protection

Choose R and C as follows: R: 0.5 to 1 Ω for each volt across the contacts C: 0.5 to 1 µF for each amp through closed contacts

Notes:

1. Use capacitors rated for 250 VAC.

2. RC networks may affect load release time of solenoid loads. Check to confirm proper operation.

3. Install the RC network at the meter's relay screw terminals. An RC network may also be installed across the load. Experiment for best results.

Use a diode with a reverse breakdown voltage two to three times the circuit voltage and forward current at least as large as the load current.

Figure 17. Low Voltage DC Loads Protection

RC Networks (Snubbers) Available from Precision Digital

RC networks are available from Precision Digital and should be applied to each relay contact switching an inductive load. Part number: PDX6901.

Note: Relays are de-rated to 1/14th HP (50 watts) with an inductive load.

RS-485 Connections

The RS-485 connections are made to a five terminal connector used for Modbus RTU serial communications. The RS-485 terminals include Transmit Data (DO) and (/DO), Receive Data (DI) and (/DI), and Signal Ground. See Modbus RTU Serial Communications (serial) on page 51 for more information.

There are three diagnostic LEDs: Transmit Data (TX), Receive Data (RX) and METER LINK to show when the meter is transmitting and receiving data from other devices.

Figure 18. RS-485 Diagnostic LEDs

RS-485 Multi-Drop Connection

When using more than one meter in a multi-drop mode, each meter must be provided with its own unique address. The meter address (Slave ID) can be programmed between 1 and 247. The transmit delay can be set between 0 and 199 ms. The parity can be set to even, odd, or none with 1 or 2 stop bits.

To change the meter address:

1. Press and hold the Menu button for three seconds to access Advanced Features menu of the meter.

2. Press Up arrow until Serial (SEriaL) menu is displayed and press Enter, Addres is displayed.

3. Press Enter to change meter address using Right and Up arrow buttons. Press Enter to accept.

4. Press Menu button to exit and return to Run Mode.

Three-Wire Connection

In order to wire the five pins for use as a three-wire half-duplex RS-485 connection, it is necessary to create a jumper connection between DI to DO and /DI to /DO- as shown below.

C R

__ __

DI DI DO DO

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Digital I/O Connections

Digital inputs and outputs are provided in order to expand the functionality of the meter. Digital input connections are made via a push button or switch to the appropriate digital input terminal and the +5 VDC terminal. Digital output connections are made by wiring from the appropriate digital output terminal to the ground terminal.

Figure 19. Digital Input and Output Connections

The onboard digital inputs (1-4) are configured at the factory to function identically to the front panel pushbuttons (Menu, F1, F2, & F3) in order to work with the SafeTouch buttons. Changing the programming of the digital inputs will affect the function of the SafeTouch buttons. If you wish to change the behavior of the digital inputs, re-assign F1-F3 to the desired function, then change the corresponding digital input to match.

• DO NOT disconnect the RJ45 M-LINK connector cable. Otherwise the instrument will not function properly.

F4 Digital Input Connections

A digital input, F4, is standard on the meter. This digital input should be connected with a normally open contact across F4 and COM, or with an active low signal applied to F4. It can be used to operate the tare function, for remote operation of front-panel buttons, to acknowledge/reset relays, or to reset max/min values. See Function Keys & Digital I/O Available Settings on page 54 for a complete list of capabilities.

Figure 20. F4 Digital Input Connections

4-20 mA Output Connections

Connections for the 4-20 mA transmitter output are made to the connector terminals labeled mA OUT. The 4-20 mA output may be powered internally or from an external power supply.

Figure 21. 4-20 mA Output Connections

Analog Output Power Supply

If the analog output is not using the 24 VDC supply to power the output loop, it can be used for other things. The I+ Terminal is the +24 V and the R terminal is the return.

Figure 22. Analog Output Supply

Powering Other Devices

Remote Programming

The meter can be operated via the programming buttons or a remote control station with required approvals to be located in a hazardous area using the digital inputs and outputs.

4-20 mA Input

Remote Display, PLC,

Chart Recorder, Etc.

RI- I+

132

RELAY1

mA OUT

24 V

12-35 VDC

Power

Supply

4-20 mA

Input Meter

RI- I+ 132

RELAY1

321

24 V

mA OUT

Internal Power Supply

and Analog Output

321

Active Output Loop Passive Output Loop

RI- I+

132

24 VDC

Powered

Device

24 V

Page 30

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Setup and Programming

There is no need to recalibrate the meter when first received from the factory, if used to read millivolts.

The meter is factory calibrated prior to shipment for millivolts with calibration equipment that is certified to NIST standards.

If the meter is used with a strain gauge or load cell, it is recommended to perform a live calibration with the sensor connected.

Overview

There is a 5-position DIP switch on the back of the control module to set the meter input selection. See Switch Configuration on page 25 to setup the switch.

Setup and programming is done using MeterView Pro or through the programming buttons. After power and input signal connections have been completed and verified, apply power to the meter.

LED Status Indicators

LED

State

Indication

1-4

Steady

Alarm condition based on set and reset points, independent of relay status in certain configurations. (Available on all meter configurations, including those without relays installed)

1-4

Flashing

Relay interlock switch open

1-4 & M

Flashing

Relay in manual control mode

Flashing

Meter in Tare mode

Flashing

Analog output in manual control mode

Steady

Gross value being displayed

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Programming Buttons

Button

Description Button

Description

Up Arrow/F2 RESET TARE

Right Arrow/F1 ZERO THE DISPLAY

Acknowledge (Enter)/F3 TARE

• Press the Menu button to enter or exit the Programming Mode at any time.

• Press the Right arrow button to move to the next digit during digit or decimal point programming.

• Press or hold the Up arrow button to scroll through the menus, decimal point, or to increment the value of a digit.

• Press the Enter button to access a menu or to accept a setting.

• Press and hold the Menu button for three seconds to access the advanced features of the meter.

SafeTouch Buttons

These buttons can be disabled for security by selecting DISABLE on the switch labeled NO-CONTACT BUTTONS located on the connector board.

To actuate a button, press one finger to the glass directly over the marked button area. Then retract finger more than three inches from the glass before pressing the next button. When the cover is removed, the four mechanical buttons located next to the sensors are used. The sensors are disabled when a mechanical button is pressed and will automatically be re-enabled after 60 seconds of inactivity.

The SafeTouch Buttons are designed to filter normal levels of ambient interference and to protect against false triggering, however, it is recommended that the SafeTouch Buttons be disabled (slide switch to DISABLE) if there is an infrared interference source in line-of-sight to the display.

The SafeTouch Buttons are configured by default to duplicate the function of the front panel mechanical pushbuttons associated with the integrated controller. The symbols by each SafeTouch button correspond to a mechanical button as shown in the above table.

SafeTouch Button Tips:

• To the extent possible, install the display facing away from sunlight, windows, reflective objects and any sources of infrared interference.

• Keep the glass window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Display Functions & Messages

The meter displays various functions and messages during setup, programming, and operation. The following table shows the main menu functions and messages in the order they appear in the menu.

Display Functions & Messages

Display

Parameter

Action/Setting Description

setup

Setup

Enter Setup menu

Input

Enter Input selection menu

Polar

Enter unipolar or bipolar selection menu

uni

Unipolar

Press Enter to select operation with positive signals only (e.g. 0-30 mV)

Bipolar

Press Enter to select operation with positive & negative signals (e.g. ±15 mV)

range

Range

Enter range selection menu

15 nmV

15 mV

Set meter for 15 mV input (uni/bi)

25 nmV

25 mV

Set meter for ±25 mV input (bi)

30 nmV

30 mV

Set meter for 30 mV input (uni)

150nmV

150 mV

Set meter for 150 mV input (uni/bi)

250nmV

250 mV

Set meter for ±250 mV input (bi)

300nmV

300 mV

Set meter for 300 mV input (uni)

ratio

Ratiometric

Press Enter to select ratiometric operation to compensate for excitation changes.

d-SCAL

Dual-Scale

Press Enter to select dual-scale display (Select Yes or No)

units

Units

Select the display units/tags

Dec pt

Decimal point

Set decimal point

PV 1

PV1

PV1 decimal point (dual-scale)

PV 2

PV2

PV2 decimal point (dual-scale)

prog

Program

Enter the Program menu

SCALE

Scale

Enter the Scale menu

SCAL 1

Scale 1

Enter the Scale menu for PV1

SCAL 2

Scale 2

Enter the Scale menu for PV2

Display Functions & Messages

Display

Parameter

Action/Setting Description

Cal

Calibrate

Enter the Calibration menu

Inp 1

Input 1

Calibrate input 1 signal or program input 1 value

Dis 1

Display 1

Program display 1 value

Inp 2

Input 2

Calibrate input 2 signal or program input 2 value (up to 32 points)

Dis 2

Display 2

Program display 2 value (up to 32 points)

Error

Error, calibration not successful, check signal or programmed value

dsplay

Display

Enter the Display menu

Line 1

Press Enter to assign the upper display parameter (default: PV)

Line 2

Press Enter to assign the lower display parameter (default: engineering units)

d-Inty

Display intensity

Set display intensity level from 1 to 8

RELaY

Relay

Enter the Relay menu

RLY 1

Relay 1

Relay 1 setup

Act 1

Action 1

Set relay 1 action

Auto

Automatic

Set relay for automatic reset

A-nman

Automanual

Set relay for automatic & manual reset any time

LatCH

Latching

Set relay for latching operation

Lt-CLr

Latchingcleared

Set relay for latching operation with manual reset only after alarm condition has cleared

Altern

Alternate

Set relay for alternation control

Sanmpl

Sampling

Set relay for sampling operation

OFF

Off

Disable relay and front panel status LED (Select Off to enable Interlock feature)

Set 1

Program set point 1

RSt 1

Reset 1

Program reset point 1

RLY 2

Relay 2

Relays 2-4 setup.

FaiLSF

Fail-safe

Enter Fail-safe menu

FLS 1

Fail-safe 1

Set relay 1 fail-safe operation

Enable fail-safe operation

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Display Functions & Messages

Display

Parameter

Action/Setting Description

FLS 2

Fail-safe 2

Set relays 2-4 fail-safe operation

DeLAY

Delay

Enter relay Time Delay menu

DLY 1

Delay 1

Enter relay 1 time delay setup

On 1

Set relay 1 On time delay

OFF 1

Off 1

Set relay 1 Off time delay

DLY 2

Delay 2

Enter relays 2-4 time delay setup

Aout

Analog output

Enter the Analog output scaling menu

Dis 1

Display 1

Program display 1 value

Out 1

Output 1

Program output 1 value (e.g. 4.000 mA)

Dis 2

Display 2

Program display 2 value

Out 2

Output 2

Program output 2 value (e.g. 20.000 mA)

reset

Reset

Press Enter to access the Reset menu

Rst Hi

Reset high

Press Enter to reset max display

Rst Lo

Reset low

Press Enter to reset min display

Rst HL

Reset high & low

Press Enter to reset max & min displays

Rst tr

Reset tare

Press Enter to reset tare

tare

Tare

Enter Tare menu

Captur

Capture

Press Enter to set meter to capture tare using the Tare button

Prog T

Programm able

Press Enter to set meter to programmable tare and enter a value

Off

Press Enter to disable the tare function

Contrl

Control

Enter Manual Control menu

Auto

Automatic

Press Enter to set meter for automatic operation

nmAn

Manual

Press Enter to manually control relays or analog output operation

pass

Password

Enter the Password menu

Pass 1

Password 1

Set or enter Password 1

Pass 2

Password 2

Set or enter Password 2

Pass 3

Password 3

Set or enter Password 3

Display Functions & Messages

Display

Parameter

Action/Setting Description

unloc

Unlocked

Program password to lock meter

locd

Locked

Enter password to unlock meter

999999

-99999

Flashing

Over/under range condition

Fault

Flashing

Input exceeds range settings

Page 34

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Main Menu

The main menu consists of the most commonly used functions: Setup, Reset, Tare, Control, and Password.

• Press Menu button to enter Programming Mode then press the Up arrow button to scroll main menu.

• Press Menu, at any time, to exit and return to Run Mode. Changes made to settings prior to pressing Enter are not saved.

• Changes to the settings are saved to memory only after pressing Enter.

• The display moves to the next menu every time a setting is accepted by pressing Enter.

Setting Numeric Values

The numeric values are set using the Right and Up arrow buttons. Press Right arrow to select next digit and Up arrow to increment digit value.

The digit being changed is displayed brighter than the rest.

Press and hold up arrow to auto-increment the display value.

Press the Enter button, at any time, to accept a setting or Menu button to exit without saving changes.

Setting Up the Meter (setup)

The Setup menu is used to select:

1. Unipolar (e.g. 0-30 mV) or bipolar (e.g. ±25 mV) polarity, input range, ratiometric operation, and dual-scale feature

2. Engineering units

3. Decimal point position

4. Program scaling or live calibration

5. Display parameter and intensity

6. Relay operation

7. 4-20 mA analog output scaling

Notes:

1. Use the d-SCal selection to activate the dual-scale level feature – PV1 & PV2. Set d-SCal to no if both displays are to be used for anything other than PV1 & PV2.

2. SCal 1 & SCal 2 are displayed if d-SCal is selected under the Setup Input menu. They correspond to the PV2 & PV2 scales.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Setting the Input Signal (Input)

Enter the Input menu to set up the input polarity, range, ratiometric operation, and dual-scale feature.

The meter is capable of accepting any signal from

-250 to 250 mV in bipolar mode or up to 300 mV in unipolar mode.

After selecting “Yes” or “No” for ratio, d-SCAL is displayed. Selecting “Yes” enables the dual-scale feature, allowing scaling of the same input in two different scales (for PV1 & PV2) or displaying the percentage of PV1.

Input Polarity Selection (PoLAR)

Select unipolar operation for inputs in ranges from 0 to 300 mV and select bipolar operation for inputs in ranges from -250 mV to +250 mV. This setting determines the selectable ranges for the millivolt input.

Note: Refer to Switch Configuration on page 25 for proper configuration switch positioning.

Range Selection (RANGE)

This menu is used to select the input range. The selections listed are determined by the Polarity setting.

Unipolar mode: 0-15 mV, 0-30 mV, 0-150 mV, 0-300 mV

Bipolar mode: ±15 mV, ±25 mV, ±150 mV, ±250 mV

Note: Refer to Switch Configuration on page 25 for proper configuration switch positioning.

Ratiometric Operation (ratio)

Ratiometric operation corrects the measured strain gauge signal for up to ±5% variation of either the internal or external excitation power supply. In order to use the ratiometric operation, the ratiometric operation menu must be set to yes (YES).

Dual-Scale (d-sCal)

The mV input can be displayed in two different scales, by enabling the dual-scale feature in the Setup-Input menu. See Dual-Scale (d-sCal) on page 35.

To enable the dual-scale feature you must select d-SCAL in the Input selection menu.

Setting the Display Units (units)

Enter the pre-defined engineering unit or custom unit. The pre-defined units have automatic conversion factors. This unit will be displayed if d unit is selected as the lower display parameter. See Setting the Display Parameter & Intensity (dsplay) flow chart on page 39 to access the display menu to show the unit on the lower display.

The custom unit may also be used to enter a display tag.

Pre-defined engineering units: lb, kg, ounce, gram, ton (short), tonne (metric ton). The meter converts the reading according to the unit selected (e.g. 100.00 lb = 45.36 kg = 45359.2 g = 1600 oz).

Unit Conversions: After scaling values in the Scale menu have been entered during setup, automatic unit conversions are done when switching from any standard unit to any other standard unit during future changes of the Units menu.

Once a standard unit has been selected in the units menu, the user must then set their scaling values for that unit (under the setup menu) in order for that unit's conversion factor to take effect. Otherwise, the meter will allow the user to freely switch between standard unit selections, without applying a conversion factor.

Note that if the dual-scale feature is selected in the Setup menu, both PV1 and PV2 will be converted from the original standard unit to the new standard unit. A scaled PV not scaled for the selected units must be reprogrammed. Example: If PV 1 is scaled for pounds, and PV 2 scaled for gallons; if the units selection is changed from Lb to ounce, PV 2 will need to re-scaled manually back to gallons.

Note: PV1 and PV2 may use different standard units as starting points, however the user must select the unit and complete scaling for both PV1 and PV2 individually. For example, set PV1 equal to "Lbs" and complete the scaling for PV1 only. PV1 is now reading in Lbs. Then, change the units for PV2 to be "Kg" and complete the scaling for PV2.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Setting the Display Units or Custom Tags (units)

Enter the display unit or custom tag that will be displayed if units are selected in the units menu, or d unit is selected as the lower display parameter. See Setting the Display Parameter & Intensity (dsplay) flow chart on page 39 to access the display menu to show the unit or tag on the lower display. The engineering units or custom legends can be set using the following 7-segment character set:

Display

Character

Display

Character

k K 1

n n 4

O O 5

o o 6

p P 7

q q 8

r r 9

s S A

t t b

u u C

x X e

y Y f

z Z g

- - 9

/ / H

[ ] h

] [ I

= = I

Degree(<)

Space

Notes:

1. Degree symbol represented by (<) if programming with MeterView Pro.

2. The letters “m” and “w” use two 7-segment LEDs each; when selected the characters to the right are shifted one position.

3. Press and hold up arrow to auto-scroll the characters in the display.

Setting the Decimal Point (dEc pt)

The decimal point may be set with up to five decimal places or with no decimal point at all.

Pressing the Right arrow moves the decimal point one place to the right until no decimal point is displayed, and then it moves to the leftmost position.

Pressing the Up arrow moves the decimal point to the left. If the dual-scale feature is selected, the decimal point

selections for PV1 & PV2 are enabled.

Programming the Meter (prog)

The meter may either be scaled (SCALE) without applying an input or calibrated (Cal) by applying an input. The meter comes factory calibrated to NIST standards to read in millivolts, so for initial setup, it is recommended to use the (SCALE) function.

For strain gauge and load cell applications it is recommended to calibrate the meter using the sensor as the input and with ratiometric operation enabled to compensate for small variation in the excitation voltage.

The PD8-6100 is a single input meter with dual-scale capability. If the dual-scale feature is selected in the Setup menu, the Scale 1 and Scale 2 menus are enabled for PV1 & PV2 respectively.

The process inputs may be calibrated or scaled to any display value within the range of the meter.

Program Menu for Single Scale Process

Program Menu for Dual-Scale Applications

Additional parameters, not needed for most applications, are programmed in the Advanced Features menu. See Advanced Features Menu on page 50.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Calibrating the Meter with Strain Gauge/Load Cell (Cal)

To scale the meter without a signal source, refer to

Scaling the Meter (SCALE) on page 37.

The meter can be calibrated to display the process variable in engineering units by applying the appropriate input signal and following the calibration procedure.

The use of a calibrated signal source is strongly recommended to calibrate the meter.

Note: Inputs for the above example are: Input 1: 0.00 mV; Display 1: 0.000 mV Input 2: 150.00 mV; Display 2: 150.000 mV

Warm up the meter for at least 15 minutes before

performing calibration to ensure specified

accuracy.

Multi-Point Calibration & Scaling

The meter is set up at the factory for 2-point linear calibration. The number of points for multi-point calibration/scaling is set up in the Advanced Features menu. Up to 32 linearization points may be selected for PV1 and up to 8 linearization points may be selected for PV2. See Multi-Point Linearization (Linear) on page 52 for details.

Scaling the Meter (SCALE)

The strain gauge input (e.g. 0-100 mV) can be scaled to display the process variable in engineering units.

A signal source is not needed to scale the meter; simply program the inputs and corresponding display values.

For instructions on how to program numeric values see Setting Numeric Values on page 34.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Dual-Scale Application

The mV input can be displayed in two different scales, by enabling the dual-scale feature in the Setup Input menu. See Dual-Scale (d-sCal) on page 35.

To enable the dual-scale feature you must select it in the Input selection menu. See Setting the Input Signal (Input) on page 35 for details.

Scaling the Input for PV1 (SCAL 1)

Scaling the Input for PV2 (SCAL 2)

Error Message (Error)

An error message indicates that the calibration or scaling process was not successful.

After the error message is displayed, the meter reverts to input 2 during calibration or scaling and to input 1 during internal calibration, allowing the appropriate input signal to be applied or programmed.

The error message might be caused by any of the following conditions:

1. Input signal is not connected to the proper terminals, or it is connected backwards.

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

4. Input 1 signal inadvertently applied to calibrate input 2.

Minimum Input Span

The minimum input span is the minimum difference between input 1 and input 2 signals required to complete the calibration or scaling of the meter.

Input Range

Input 1 & Input 2 Span

15 mV

0.2 mV

25 mV, 30 mV

0.4 mV

150 mV

2.0 mV

250 mV, 300 mV

4.0 mV

Page 39

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Setting the Display Parameter & Intensity (dsplay)

Display line 1 (line 1) can be programmed to display:

1. Process value 1 (PV1)

2. Process value 2 (PV2)*

3. Percent of PV1 (PCt)*

4. Relay set points

5. Toggle process value & units

6. Max & min values

7. Gross value

8. Toggle net & gross values

9. Input millivolts

10. Modbus input

Display line 2 (line 2) can be programmed to display:

1. Engineering units or custom legends

2. Process value 1 (PV1)

3. Process value 2 (PV2)*

4. Percent of PV1 (PCt)*

5. Relay set points

6. Toggle process value & units

7. Max & min values

8. Gross value

9. Toggle net & gross values

10. Input millivolts

11. Modbus input

12. Off (no display)

*These menu items will only appear if Dual-Scale feature is turned on.

After setting up the input and display, press the Menu button to exit programming and skip the rest of the setup menu. Press the Menu button again and the Up arrow to reach the Program menu and complete the scaling or calibration of the meter.

Display Intensity (d-Inty)

The meter has eight display intensity levels to give the best performance under various lighting conditions. Select intensity 8 for outdoor applications. The default intensity is 6.

The PD8-6100 can be programmed so that the main display toggles between the reading and units and the second display displays a tag. For instance, the main display toggles between 9500 and Lbs and the second display reads Tank 1.

Display Parameter Menu

Dual-Scale Display Feature

The dual-scale feature is of particular value in weighing applications where a second scaled display can represent the measured input in a different form (i.e. pounds & height). Both displays are independently scaled and are based on the millivolt input signal.

Lbs & mV Lbs & Height

Lbs & Percent Lbs & Tons

Page 40

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Setting the Relay Operation (relay)

This menu is used to set up the operation of the relays.

• During setup, the relays do not follow the input and they will remain in the state found prior to entering the Relay menu.

1. Relay action

a. Automatic reset only (non-latching) b. Automatic + manual reset at any time

(non-latching) c. Latching (manual reset only) d. Latching with Clear (manual reset only

after alarm condition has cleared) e. Pump alternation control (automatic

reset only) f. Sampling (the relay is activated for a

user-specified time) g. Off (relay state controlled by Interlock

feature)

2. Set point

3. Reset point

4. Fail-safe operation a. On (enabled) b. Off (disabled)

5. Time delay a. On delay (0-999.9 seconds) b. Off delay (0-999.9 seconds)

Setting the Relay Action

Operation of the relays is programmed in the Action menu. The relays may be set up for any of the following modes of operation:

1. Automatic reset (non-latching)

2. Automatic + manual reset at any time (non-latching)

3. Latching (manual reset only, at any time)

4. Latching with Clear (manual reset only after alarm condition has cleared)

5. Pump alternation control (automatic reset only)

6. Sampling (the relay is activated for a user-specified time)

7. Off (relay state controlled by Interlock feature)

The following graphic shows relay 1 action setup; relay 2-4 are set up in a similar fashion.

Page 41

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Programming Set and Reset Points

High alarm indication: program set point above reset point.

Low alarm indication: program set point below reset point.

The deadband is determined by the difference between set and reset points. Minimum deadband is one display count. If the set and reset points are programmed with the same value, the relay will reset one count below the set point.

Note: Changes are not saved until the reset point has been accepted.

Setting Fail-Safe Operation

In fail-safe mode of operation, the relay coil is energized when the process variable is within safe limits and the relay coil is de-energized when the alarm condition exists. The fail-safe operation is set independently for each relay. Select on to enable or select off to disable fail-safe operation.

Programming Time Delay

The On and Off time delays may be programmed for each relay between 0 and 999.9 seconds. The relays will transfer only after the condition has been maintained for the corresponding time delay.

The On time delay is associated with the set point. The Off time delay is associated with the reset point.

Relay and Alarm Operation Diagrams

The following graphs illustrate the operation of the relays, status LEDs, and ACK button.

High Alarm Operation (Set > Reset)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay. To detect a new alarm condition, the signal must go below the set point, and then go above it.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Low Alarm Operation (Set < Reset)

For Manual reset mode, ACK can be pressed anytime to turn

"off" relay. For relay to turn back “on”, signal must go above

set point and then go below it.

High Alarm with Fail-Safe Operation (Set > Reset)

Note: Relay coil is energized in non-alarm condition. In case

of power failure, relay will go to alarm state.

Low Alarm with Fail-Safe Operation (Set < Reset)

Note: Relay coil is energized in non-alarm condition. In case

of power failure, relay will go to alarm state.

Time Delay Operation

The following graphs show the operation of the time delay function.

When the signal crosses the set point, the On time delay timer starts and the relay trips when the time delay has elapsed. If the signal drops below the set point (high alarm) before the time delay has elapsed, the On time delay timer resets and the relay does not change state. The same principle applies to the Off time delay.

Note: If “Automatic or Manual (A-mAn)” reset mode is selected, the LED follows the reset point and not the relay state when the relay is acknowledged.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Pump Alternation Control Operation

Relay Sampling Operation

When the signal crosses the set point, the relay trips and the sample time starts. After the sample time has elapsed, the relay resets. The cycle repeats every time the set point is crossed, going up for high alarms and going down for low alarms.

The sample time can be programmed between 0.1 and 5999.9 seconds.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Relay Operation Details

Overview

The four-relays option for the meter expands its usefulness beyond simple indication to provide users with alarm and control functions. Typical applications include high and low force, level, or pressure alarms, control applications such as simple on/off control, and relay alternation control for up to 4 pumps. There are four basic ways the relays can be used:

1. High and Low Alarms with Latching or Non-Latching Relays

2. Simple On/Off Control with 100% Adjustable Deadband

3. Sampling (Based on Time)

4. Alternation Control for up to 4 Pumps

Relays Auto Initialization

When power is applied to the meter, the front panel LEDs and alarm relays will reflect the state of the input to the meter. The following table indicates how the alarm LEDs and relays will react on power-up based on the set and reset points.

Fail-Safe Operation

The following table indicates how the relays behave based on the fail-safe selection for each relay:

Fail-Safe Selection

Non-Alarm State

Alarm State

Power Failure

Off

Open

Closed

Open

Relays go to nonalarm state

Closed

Open

Closed

Relays go to alarm state

Note: NO = Normally Open, NC = Normally Closed. This refers to the condition of the relay contacts when the power to the meter is off.

Front Panel LEDs

The alarm status LEDs on the front panel are available on all meters, even those without relays installed, and provide status indication for the following:

LED

Status

Alarm 1

Alarm 2

Alarm 3

Alarm 4

The meter is supplied with four alarm points that include front panel LEDs to indicate alarm conditions. This standard feature is particularly useful for alarm applications that require visual-only indication. The LEDs are controlled by the set and reset points programmed by the user. When the display reaches a set point for a high or low alarm, the corresponding alarm LED will turn on. When the display returns to the reset point the LED will go off. The front panel LEDs respond differently for latching and non-latching relays.

For non-latching relays, the LED is always off during normal condition and always on during alarm condition, regardless of the state of the relay (e.g. Relay acknowledged after alarm condition).

For latching relays, the alarm LEDs reflect the status of the relays, regardless of the alarm condition. The following tables illustrate how the alarm LEDs function in relation to the relays and the acknowledge button (Default: F3 key assigned to ACK).

Latching and Non-Latching Relay Operation

The relays can be set up for latching (manual reset) or non-latching (automatic reset) operation.

Relay terminology for following tables

Terminology

Relay Condition

Alarm (Tripped)

Off

Normal (Reset)

Ack

Acknowledged

The On and Off terminology does not refer to the status of the relay’s coil, which depends on the fail-safe mode selected.

• In latching relay mode, if Fail-Safe is off, latched relays will reset (unlatch) when power is cycled.

Alarm #

HI or LO

Alarm

Set

Point

Reset

Point

Power-

Reading

Relay &

LED

1000

500

499

Off 2 LO

700

900

499

On 3 LO

250

400

499

Off 4 HI

450

200

499

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Non-Latching Relay (Auto)

In this application, the meter is set up for automatic reset (non-latching relay). Acknowledging the alarm while it is still present has no effect on either the LED or the relay. When the alarm finally goes away, the relay automatically resets and the LED also goes off.

Non-Latching Relay with Manual Reset (A-nman)

In this application, the meter is set up for automatic and manual reset at any time (non-latching relay). The LED and the relay automatically reset when the meter returns to the normal condition.

In addition, the relay can be manually reset while the alarm condition still exists, but the LED will stay on until the meter returns to the normal condition.

Automatic + manual reset at any time

Condition

LED

Relay

Normal

Off

Alarm

Normal

Off

Next Alarm

Ack

Off

Normal

Off

Latching Relay (LatcH)

In this application, the meter is set up for manual reset at any time. Acknowledging the alarm even if the alarm condition is still present resets the relay and turns off the LED.

Manual reset any time

Condition

LED

Relay

Normal

Off

Alarm

Ack

Off

Latching Relay with Clear (Lt-Clr)

In this application, the meter is set up for manual reset only after the signal passes the reset point (alarm condition has cleared). Acknowledging the alarm while it is still present has no effect on either the LED or the relay. When the alarm is acknowledged after it returns to the normal state, the LED and the relay go off. Notice that the LED remains on, even after the meter returns to the normal condition. This is because, for latching relays, the alarm LED reflects the status of the relay, regardless of the alarm condition.

Manual reset only after

alarm condition has cleared

Condition

LED

Relay

Normal

Off

Alarm

Ack (No effect)

Normal

Ack

Off

Automatic reset only

Condition

LED

Relay

Normal

Off

Alarm

Ack (No effect)

Normal

Off

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Acknowledging Relays

There are three ways to acknowledge relays programmed for manual reset:

1. Via the programmable front panel function keys

F1-F3 (Example: F3 assigned to ACK).

Note: If F3 is assigned to ACK, then it cannot be used for Tare.

2. Remotely via a normally open push button wired to the F4 terminal.

3. Remotely via a normally open push button wired to one of the digital inputs and the +5 V terminal on the digital I/O connections.

When the ACK button or the assigned digital input is closed, all relays programmed for manual reset are acknowledged.

Pump Alternation Control Applications (Altern)

For pump control applications where two or more similar pumps are used to control the level of a tank, it is desirable to have all the pumps operate alternately. This prevents excessive wear and overheating of one pump over the lack of use of the other pumps.

Up to 4 relays can be set up to alternate every time an on/off pump cycle is completed. The set points and reset points can be programmed, so that the first pump on is the first pump off.

Application #1: Pump Alternation Using Relays 1 & 2

1. Relays 1 and 2 are set up for pump alternation.

2. Relays 3 and 4 are set up for low and high alarm indication.

Set and Reset Point Programming

Relay

Set Point

Reset Point

Function

30.000

10.000

Controls pump #1

35.000

5.000

Controls pump #2

4.000

9.000

Controls low alarm

40.000

29.000

Controls high alarm

Pump Alternation Operation

1. Pump #1 turns on when level reaches 30.000, when level drops below 10.000 pump #1 turns off.

2. The next time level reaches 30.000, pump #2 turns on, when level drops below 10.000 pump #2 turns off.

3. If the level doesn’t reach 35.000 pump #1 and pump #2 will be operating alternately.

4. If pump #1 cannot keep the level below 35.000 pump #2 will turn on at 35.000, then as the level drops to 10.000 pump #1 turns off, pump #2 is still running and shuts off below 5.000.

5. Notice that with the set and reset points of pump #2 outside the range of pump #1, the first pump on is the first pump to go off. This is true for up to 4 alternating pumps, if setup accordingly.

6. Relay #3 will go into alarm if the level drops below 4.000 and relay #4 will go into alarm if the level exceeds 40.000.

7. Adding the 4 external relays expansion module allows using the 4 SPDT internal relays for pump alternation and the 4 SPST external relays for high, high-high, low, and low-low alarm indication.

Application #2: Pump Alternation Using Relays 3 & 4

1. Relays 1 and 2 are set up for low and high alarm indication.

2. Relays 3 and 4 are set up for pump alternation.

Set and Reset Point Programming

Relay

Set

Point

Reset

Point

Function

495

750

Controls low alarm

7500

6900

Controls high alarm

7000

900

Controls backup pump

6000

1000

Controls main pump

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

The following graphics provide a visual representation of a typical pump alternation application with high and low alarm monitoring:

Relay #4 turns the main pump on at 6000 pounds and turns it off at 1000 pounds.

With the Pump Alternation feature activated, the next time the level reaches 6000 pounds, relay #3 transfers and starts the backup pump.

If the backup pump is not able to keep up, and the level reaches 7000 pounds, relay #4 transfers and starts the main pump as well.

Relay #2 trips the High Level Alarm at 7500 pounds and resets at 6900 pounds.

Relay #1 trips the Low Level Alarm at 495 pounds and resets at 750 pounds.

Setting Up the Interlock Relay (Force On) Feature

Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature:

1. Access the Setup – Relay – Action menu and set

the action to off.

2. In the Advanced features – User menu program

any of the digital inputs to Force On any of the internal relays (1-4).

3. Connect a switch or dry contact between the +5V

terminal and the corresponding digital input (dI-1 to dI-4) terminal.

Interlock Relay Operation Example

Relays 1 & 2 are configured to energize (their front panel LEDs are steady on) when SW1 & SW2 switches (above) are closed. If the contacts to these digital inputs are opened, the corresponding front panel LEDs flash indicating this condition. The processes being controlled by the interlock relay will stop, and will re-start only after the interlock relay is re-activated by the digital inputs (switches).

Note: If multiple digital inputs are assigned to the same relay, then the corresponding logic is (AND) – i.e. both switches must be closed to activate the relay.

• If the digital inputs are assigned to the Interlock Function, then they cannot be used to program

the meter remotely.

1 2 3 4 5 6

+5 I1 I2 I3 I4 O1

7 8

O2 O3

9 10

O4 G

DI 1-4 DO 1-4

5 VDC GND

SW2

SW1

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Scaling the 4-20 mA Analog Output (Aout)

The 4-20 mA analog output can be scaled to provide a 4-20 mA signal for any display range selected.

No equipment is needed to scale the analog output; simply program the display values to the corresponding mA output signal.

The Analog Output menu is used to program the 4-20 mA output based on display values.

For instructions on how to program numeric values see Setting Numeric Values on page 34.

Reset Menu (reset)

The Reset menu is used to reset the tare (rst tr) and the maximum or minimum readings (peak or valley) reached by the process; max & min may be reset at the same time by selecting “reset high & low” (rst HL).

Note: Resetting the tare resets the max & min readings.

Tare Menu (Tare)

The Tare menu is used to select the tare mode. There are three modes of operation: Capture Tare, Programmable Tare, and Off.

Capture Tare: Pressing the Tare key zeroes the

display and the “T” indicator flashes indicating that

tare is applied to the reading (e.g. Net weight). Programmable Tare: Program a known value to be

subtracted from the display value to obtain the net value. Pressing Reset tare clears the tare value to zero. Programmable Tare will not tare negative PVs. Use Capture Tare for negative PVs.

Off: Tare function is disabled and pressing Tare key has no effect.

Tare Functionality (tare)

The tare function zeroes out the display. In the case of scale weight, tare is used to eliminate container weight and provide net weight readings.

Manual Control Menu (Contrl)

The Manual Control menu is used to control the 4-20 mA analog output and the relays manually, ignoring the input. Each relay and analog output can be programmed independently for manual control. Selecting automatic control sets all relays and analog output for automatic operation.

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Instruction Manual

Setting Up the Password (pass)

The Password menu is used for programming three levels of security to prevent unauthorized changes to the programmed parameter settings.

Pass 1: Allows use of function keys and digital inputs

Pass 2: Allows use of function keys, digital inputs and editing set/reset points

Pass 3: Restricts all programming, function keys, and digital inputs.

Protecting or Locking the Meter

Enter the Password menu and program a six-digit password.

For instructions on how to program numeric values see Setting Numeric Values on page 34.

Making Changes to a Password Protected Meter

If the meter is password protected, the meter will display the message Locd (Locked) when the Menu button is pressed. Press the Enter button while the message is being displayed and enter the correct password to gain access to the menu. After exiting the programming mode, the meter returns to its password protected condition.

Disabling Password Protection

To disable the password protection, access the Password menu and enter the correct password twice, as shown below. The meter is now unprotected until a new password is entered.

If the correct six-digit password is entered, the meter displays the message unLoc (unlocked) and the protection is disabled until a new password is programmed.

If the password entered is incorrect, the meter displays the message Locd (Locked) for about two seconds, and then it returns to Run Mode. To try again, press Enter while the Locked message is displayed.

Did you forget the password?

The password may be disabled by entering a master password once. If you are authorized to make changes, enter the master password 508655 to unlock the meter.

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Instruction Manual

Advanced Features Menu

To simplify the setup process, functions not needed for most applications are located in the Advanced Features menu.

Press and hold the Menu button for three seconds to access the advanced features of the meter.

Advanced Features Menu & Display Messages

The following table shows the functions and messages of the Advanced Features menu in the order they appear in the menu.

Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

filtEr

Filter

Set noise filter value

bypASs

Bypass

Set filter bypass value

Round

Rounding

Select rounding value

seriAl

Serial

Set serial communication parameters

SlaveId

Slave ID

Set slave ID or meter address

baud

Baud rate

Select baud rate

Tr dLY

Transmit delay

Set transmit delay for serial communication

Parity

Select parity Even, Odd, or None with 1 or 2 stop bits

t-byt

Time byte

Set byte-to-byte timeout

SelEct

Select

Enter the Select menu (function, cutoff, out)

Functn

Input signal conditioning

Linear, select number of points

Linear

Set meter for linear function and select number of linearization points

PV 1

PV1

Select PV1 number of linearization points

PV 2

PV2

Select PV2 number of linearization points

No PtS

Number of points

Set PV1 for 2 to 32-point linearization Set PV2 for 2 to 8-point linearization

Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

SCALE

Scale

Scaling parameter

SCAL 1

Scale 1

Scaling parameter 1

SCAL 2

Scale 2

Scaling parameter 2

CutofF

Cutoff

Set low-value cutoff

Auto 0

Auto Zero

Enter the Auto Zero function (on/off)

AoutPr

Analog output programming

Program analog output parameters

Source

Select source for the 4-20 mA output

O-rang

Overrange

Program mA output for display overrange

u-rang

Underrange

Program mA output for display underrange

nmAx

Maximum

Program maximum mA output allowed

nmin

Minimum

Program minimum mA output allowed

Calib

Calibrate

Calibrate 4-20 mA output (internal reference source used for scaling the output)

4 nmA

4 mA output

Enter mA output value read by milliamp meter with at least 0.001 mA resolution

20 nmA

20 mA output

Enter mA output value read by milliamp meter with at least 0.001 mA resolution

user

User I/O

Assign function keys and digital I/O

F1*

F1 function key

Assign F1 function key (*F1/F2/F3)

F4 function

Assign F4 function (digital input)

dI I

Digital input 1

Assign digital input 1 – 4

dO 1

Digital output 1

Assign digital output 1 – 4

ICal

Internal source calibration

Enter internal source calibration (used for scaling the meter without a signal source)

15nmV

15 mV calibration

Calibrate 15 mV input range (internal reference source used for scaling the input)

20nmV

20 mV calibration

Calibrate 30 mV input range (internal reference source used for scaling the input)

100nmV

100 mV calibration

Calibrate 150 mV input range (internal reference source used for scaling the input)

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Advanced Features Menu & Display Messages

Display

Parameter

Action/Setting

200nmV

200 mV calibration

Calibrate 300 mV input range (internal reference source used for scaling the input)

stroff

Strain offset

Calibrate the offset of the input circuit

V Lo

mV low

Calibrate low mV input (e.g. 0 mV)

V Hi

mV high

Calibrate high mV input (e.g. 100 mV)

Diag

Diagnostics

Display test and information

LED t

LED test

Test all LEDs

Info

Information

Display software number and version

Erase

Erase MeterView Pro

software stored in meter’s

memory

Noise Filter (filter)

The noise filter is available for unusually noisy signals that cause an unstable process variable display. The noise filter averages the input signal over a certain period. The filter level determines the length of time over which the signal is averaged. The filter level can be set between 2 and 199. The higher the filter level, the longer the averaging time and so the longer it takes the display to settle to its final value. Setting the filter level to zero disables the filter function.

Noise Filter Bypass (bypass)

The noise filter bypass changes the behavior of the meter so that small variations in the signal are filtered out but large abrupt changes in the input signal are displayed immediately. The bypass value determines the minimum amount of signal change to be displayed immediately. All signal changes smaller than the bypass value are filtered or averaged by the meter. The noise filter bypass may be set between 0.1 and

99.9% of full scale.

Rounding Feature (round)

The rounding feature is used to give the user a steadier display with fluctuating signals. Rounding is used in addition to the filter function.

Rounding causes the display to round to the nearest value according to the rounding selected. See examples below:

Rounding Selection

Actual Value

Display Value

Actual Value

Display Value

12.022

12.023

12.022

12.020

12.023

12.025

12.024

12.020

12.025

12.030

Modbus RTU Serial Communications (serial)

The meter is equipped with serial communications capability as a standard feature using Modbus RTU Serial Communication Protocol.

The meter may be connected to a PC for initial configuration via the onboard USB connection. For ongoing digital communications with a computer or other data terminal equipment, use the RS-485 connection with the appropriate serial converter; see Ordering Information on page 7 for details.

• DO NOT connect any equipment to the RJ45 M-LINK connector. Otherwise damage will occur to the equipment and the meter.

• DO NOT disconnect the RJ45 connector located to the left of the power terminal block. Doing so will disable the on-board digital I/O, and the RS-485 serial communications.

Notes:

1. More detailed instructions are provided with each optional serial communications adapter.

2. Refer to the ProtEX-MAX Modbus Register Tables located at www.predig.com for details.

When using more than one meter in a multi-drop mode, each meter must be provided with its own unique address. The meter address (Slave ID) may be programmed between 1 and 247. The transmit delay may be set between 0 and 199 ms. The parity can be set to even, odd, or none with 1 or 2 stop bits.

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Select Menu (SElect)

The Select menu is used to select the input signal conditioner applied to the input (linear), low-value cutoff, Auto-zero, and analog output programming.

The multi-point linearization is part of the linear function selection.

Input Signal Conditioning (Functn)

The Function menu is used to select the input signal conditioner applied to the input: linear. The multi-point linearization is part of the linear function selection.

Meters are set up at the factory for linear function with 2-point linearization. The linear function provides a display that is linear with respect to the input signal.

Multi-Point Linearization (Linear)

Meters are set up at the factory for linear function with 2-point linearization. Up to 32 linearization points can be selected for PV under the linear function. The multi-point linearization can be used to linearize the display for non-linear signals.

If the dual-scale Level feature has been selected, the menus for PV1 & PV2 are enabled. PV2 can be programmed with up to 8 linearization points.

Auto-Zero (Auto 0)

Auto-zero corrects for drift that can occur over time that causes the input signal to slowly change. The meter will continue to read zero despite slow and small changes to the input signal. The auto-zero value represents the percent of full scale drift that the meter will correct.

Under normal circumstances, when the signal increases quickly, by an amount greater than the auto-zero percent of full scale, the value will not be adjusted. Slow signal changes that occur over time at increments less than the auto-zero value, will not register on the meter (example: dust on a load cell or sensor drift over time).

Auto-Zero Example

Scale

0.00 – 100.00

Auto-Zero

0.06

Changes less than 0.06 within 1 second are zeroed out. If the change is 0.10, then it is registered as a real signal change and the Auto-Zero function is bypassed.

Low-Value Cutoff (CutofF)

The low-value cutoff feature allows the meter to be programmed so that below a certain value, the meter always displays zero.

The cutoff value may be programmed from 0.1 to

999999. The meter will display zero below the cutoff

value. Programming the cutoff value to zero disables the cutoff feature. The cutoff can be disabled to display negative values.

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Analog Output Programming (AoutPr)

The Analog Output Programming menu is used to program the behavior of the 4-20 mA output. The following parameters and functions are programmed in this menu:

1. Source: Source for generating the 4-20 mA output (e.g. PV)

2. Overrange: Analog output value with display in overrange condition

3. Underrange: Analog output value with display in underrange condition

4. Max: Maximum analog output value allowed regardless of input

5. Min: Minimum analog output value allowed regardless of input

6. Calibrate: Calibrate the internal 4-20 mA source reference used to scale the 4-20 mA output

Analog Output Source

The source for generating the 4-20 mA output may be assigned to the process variable, maximum or minimum value reached by the process, one of the set points, or the Modbus PV input.

Analog Output Calibration

To perform the analog output calibration, it is recommended to use a milliamp meter with a resolution of at least 0.1 µA to measure the output current. The values saved internally during this procedure are used for scaling the 4-20 mA output in the Setup menu.

Analog Output Calibration Procedure

1. Wire the PD8-6100 4-20 mA output to a current loop that includes a power supply (internal or external 12 to 24 VDC), and the mA input on the digital meter. See Figure 21. 4-20 mA Output Connections on page 29 for details.

2. Turn on all devices. Allow for a 15 to 30 minute warm-up.

3. Go to the Advanced Features menu, navigate to Select (Select) and choose Analog Output Programming (AoutPr)/Calibration (Calib) menu and press Enter.

4. The display will show 4 nmA. The PD8-6100 mA output should now be close to 4 mA. Press Enter and the display will show 04.000. Enter the actual value read by the digital mA meter and press Enter.

5. The display will show 20 nmA. The PD8-6100 mA output should now be close to 20 mA. Press Enter and the display will show 20.000. Enter the actual value read by the digital mA meter and press Enter.

6. The meter will now calculate the calibration factors and store them.

7. Press Menu to exit and return to Run mode.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

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Programmable Function Keys User Menu (user)

The User menu allows the user to assign the front programming buttons function keys F1, F2, and F3, the digital input F4 (located on the input signal connector), and four digital inputs (located on the digital I/O connector) to access most of the menus or to activate certain functions immediately (e.g. reset max & min, hold relay states, etc.). This allows the meter to be greatly customized for use in specialized applications.

The four digital outputs can be assigned to a number of actions and functions executed by the meter (i.e. alarms, relay acknowledgement, reset max, min, or max & min, tare, and reset tare). The digital outputs can be used to trigger external alarms or lights to indicate these specific events.

Function Keys & Digital I/O Available Settings

Refer to the following table for descriptions of each available function key or digital I/O setting.

Function Keys & Digital I/O Available Settings

Display

Description

Rst Hi

Reset the stored maximum display value

Rst Lo

Reset the stored minimum display value

Rst HL

Reset the stored maximum & minimum display values

tare

Capture tare and zero the display

Rst tr

Reset captured tare and resume normal operation

relay

Directly access the relay menu

Set 1**

Directly access the set point menu for relay 1 (*through 4)

Rly d

Disable all relays until a button assigned to enable relays (Rly E) is pressed

Rly E

Enable all relays to function as they have been programmed

O Hold

Hold current relay states and analog output as they are until a button assigned to enable relays (Rly E) is pressed

d Hold

Hold the current display value, relay states, and analog output momentarily while the function key or digital input is active. The process value will continue to be calculated in the background.

Ln1 Hi

Display minimum display value on line 1

Function Keys & Digital I/O Available Settings

Display

Description

Ln1 Lo

Display minimum display value on line 1

Ln1 HL

Display maximum & minimum display values on line 1

Ln2nmV

Display the mV input on line 2

Ln2 Hi

Display maximum display value on line 2

Ln2 Lo

Display minimum display value on line 2

Ln2 HL

Display maximum & minimum display values on line 2

zero

Zero the display (this is different from capture tare because it cannot be reset)

F On 1**

Force relay 1 (*through 4) into the on state. This function is used in conjunction with a digital input to achieve interlock functionality. See

Setting Up the Interlock Relay (Force On) Feature on page 47 for details

about interlock relays.

Contrl

Directly access the Manual Control menu

disabl

Disable the selected function key or digital I/O

AcH

Acknowledge all active relays that are in a manual operation mode such as auto-manual or latching

Reset

Directly access the reset menu

nmenu

Mimic the menu button functionality (digital inputs only)

rigHt

Mimic the right arrow/F1 button functionality (digital inputs only)

Mimic the up arrow/F2 button functionality (digital inputs only)

Enter

Mimic the enter/F3 button functionality (digital inputs only)

Alnm 1**

Provide indication when alarm 1 (*through 4) has been triggered (digital outputs only)

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Instruction Manual

Internal Source Calibration (ICAL)

There is no need to recalibrate the meter when first received from the factory.

The meter is factory calibrated prior to shipment for millivolts with calibration equipment that is certified to NIST standards.

The internal source allows the user to scale the meter without applying a signal.

The use of calibrated signal sources is necessary to perform the internal source calibration of the meter.

Check calibration of the meter at least every 12 months. Each range must be recalibrated separately.

Notes:

1. mV input: If meter is in operation and it is intended to accept only one input range (e.g. 0-30 mV), recalibration of other ranges is not necessary.

2. Strain gauge: If the meter is intended to accept a strain gauge bridge input, it is recommended to use the CAL function with ratiometric compensation turned on.

3. Allow the meter to warm up for at least 15 minutes before performing the internal source calibration procedure.

The Internal calibration menu is part of the Advanced Features menu.

1. Press and hold the Menu button for three seconds to access the advanced features of the meter.

2. Press the Up arrow button to scroll to the Internal calibration menu (ICAL) and press Enter.

3. The meter displays the first input range (15 nmV), press the Up arrow to select any other range (e.g. 100nmV. Press Enter to start the calibration process.

Example of Internal Calibration for 100 mV input range:

4. The meter displays the message “stroff” (strain offset), short the SG+, SG- terminals and press Enter. The low input message is displayed (V lo). Apply the low input signal (e.g. 0.00 mV) and press Enter. The display flashes for a moment while the meter is accepting the low input signal.

5. After the display stops flashing, a number is displayed with the leftmost digit brighter than the rest. The bright digit is the active digit that can be changed by pressing the Up arrow button. Press the Right arrow button to move to the next digit.

6. Set the display value to correspond to the input signal being calibrated; typically 0.00 mV.

7. The display moves to the high input calibration (V Hi). Apply the high input signal and press Enter.

8. Set the display for the high input calibration, in the same way as it was set for the low input calibration, typically 100.00 mV.

The following graphic shows the calibration of the 100 mV input range. The other ranges are calibrated in a similar way.

Tips:

• Low and high input signals can be any valid values within the range of the meter.

• Observe minimum input span requirements between input 1 and input 2.

• Low input should be less than high input signal.

Error Message (error)

An error message indicates that the calibration or scaling process was not successful.

The error message might be caused by any of the following conditions:

1. Input signal is not connected to the proper terminals, or it is connected backwards.

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

Minimum Input Span

The minimum input span is the minimum difference between input 1 and input 2 signals required to complete the calibration or scaling of the meter.

Input Range

Input 1 & Input 2 Span

15 mV

0.2 mV

25 mV, 30 mV

0.4 mV

150 mV

2.0 mV

250 mV, 300 mV

4.0 mV

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Instruction Manual

Meter Operation

When installed, the primary way to operate the meter is with the SafeTouch through-glass buttons that allow the user to perform various operations without removing the cover and exposing the electronics to the hazardous environment. The user can also operate the meter by connecting a hazardous area-approved control station or switch to one of the digital inputs. These can be used to perform various operations on the meter based on the Programmable Function Keys. Finally, certain operations can be performed on the meter with MeterView Pro software or through Modbus commands.

The three default operations that can be performed with the meter’s SafeTouch buttons are:

1. Zero the meter

2. Reset the tare

3. Tare the display value

In addition, the user can program the SafeTouch Buttons to perform a variety of useful operations by reassigning them to other functions per Function Keys & Digital I/O Available Settings on page 54.

Button Operation

The following table shows the default operations for the F1, F2, and F3 SafeTouch Buttons: zero the meter, reset the tare, and tare the display value.

Button Symbol

Description

Press to enter or exit Programming Mode or view settings

Press to zero the meter or other parameter/function assigned through the User menu

Press to reset tare or other parameter/function assigned through the User menu

Press to tare the display value or other parameter/ function assigned through the User menu

To learn more about SafeTouch buttons, see this video:

predig.com/videos/Safetouch_Buttons

SafeTouch Buttons

These buttons can be disabled for security by selecting DISABLE on the switch labeled NO-CONTACT BUTTONS located on the connector board.

SafeTouch Button Tips:

• To the extent possible, install the display facing away from sunlight, windows, reflective objects and any sources of infrared interference.

• Keep the glass window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

Watch Batch Control Video at

www.predig.com/videos/KN6Y6R0I1OE

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Function Keys Operation

During operation, the programmable function keys operate according to the way they have been programmed in the Advanced Features – User menu. See Programmable Function Keys User Menu (user) on page 54 for details.

The table above shows the factory default settings for F1, F2, and F3.

Digital Inputs Operation

Five (5) digital inputs, F4, DI-1 to DI-4, come standard on the meter. These digital inputs are programmed identically to function keys F1, F2, and F3. The inputs are triggered with a contact closure to +5 V in the case of digital inputs 1-4 or with an active high signal, see Digital I/O Connections on page 29 for details. The F4 is triggered with a contact closure to COM or with an active low signal. During operation, digital inputs operate according to the way they are programmed in the Advanced Features – User menu. See Programmable Function Keys User Menu (user) on page 54 for details.

Maximum/Minimum Readings

The max & min readings (peak & valley) reached by the process can be displayed either continuously or momentary:

1. Display briefly by assigning to the F1-F3 function keys or to the digital inputs in the User menu. Any of the F1-F3 function keys (buttons) and the digital inputs can be programmed to reset the max & min readings.

2. Display continuously by assigning either display to max/min through the Display menu.

To display max reading using function key:

1. Press user assigned function key/digital input to display maximum reading since the last reset/power-up.

2. To reset max/min, press the Menu button, then the Up arrow/F2 button until the Reset (Reset) menu is displayed.

3. Press the Up arrow/F2 button to select reset high (rst Hi), reset low (rst Lo), or reset high and low (rst HL) is displayed and then press the Enter/F3 button. The max and/or min displays are reset to actual values.

4. Press Menu to exit max/min display reading.

To display max/min readings continuously:

Assign either display to Max (d Hi), Min (d Lo), or toggle between Max and Min (d HL) every 10 seconds.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Troubleshooting

Due to the many features and functions of the meter,

it’s possible that the setup of the meter does not

agree with what an operator expects to see. If the meter is not working as expected, refer to the Diagnostics menu and consult the recommendations described below.

Diagnostics Menu (diag)

The Diagnostics menu is located in the Advanced Features menu, to access Diagnostics menu see Advanced Features Menu on page 50.

This menu allows the user to test the functionality of

all the meter LEDs, check the meter’s software and

version information, and erase the MeterView Pro software installation files from the meter. Press the Enter button to view the settings and the Menu button to exit at any time.

For a description of the diagnostic messages, see Advanced Features Menu & Display Messages on page 50.

Testing the Display LEDs

To test all LEDs on the display:

1. Go to the Diagnostics menu (diAG) and press Enter button.

2. Press Up arrow button and scroll to LED Test menu (led t)

3. Press the Enter button to activate the LED Test. The meter will cycle through all digits, decimal points, and relay indicators to enable the operator to check that all LEDs are functioning properly.

4. Press the Enter button again to access the Information menu (info) or press the Menu button to return to Run Mode.

Determining Software Version

To determine the software version of a meter:

1. Go to the Diagnostics menu (diAG) and press Enter button.

2. Press Up arrow button and scroll to Information menu (Info).

3. Press Enter to access the software number (SFT) and version (UER) information. Write down the information as it is displayed. Continue pressing Enter until all the information is displayed.

4. The meter returns to Run Mode after displaying all the settings.

Reset Meter to Factory Defaults

When the parameters have been changed in a way

that is difficult to determine what’s happening, it might

be better to start the setup process from the factory defaults.

Instructions to load factory defaults:

1. Enter the Advanced Features menu. See Advanced Features Menu on page 50.

2. Press Up arrow to go to Diagnostics menu

3. Press and hold Right arrow for three seconds, press Enter when display flashes reset. Note: If Enter is not pressed within three seconds, the display returns to the Diagnostics menu.

4. The meter goes through an initialization sequence (similar as on power-up), and loads the factory default settings.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Factory Defaults & User Settings

The following table shows the factory setting for most of the programmable parameters on the meter.

Parameter

Display

Default Setting

Input type

Polar

Polar = Uni

Input Range

range

Range = 30mV

Ratiometic

ratio

Ratio = Yes

Dual-scale

d-SCAl

No (Single scale)

Filter

filter

Bypass

bypass

0.2

Rounding

round

Function

Functn

Linear

Number of points

No Pts

Programming

prog

Scale

Input 1

InP 1

0.00 mV

Display 1

Dis 1

0.00

Input 2

InP 2

100.00 mV

Display 2

Dis 2

100.00

Decimal point

ddd.ddd

3 places

Cutoff value

CutofF

0.0 (disabled)

Auto-zero

Auto 0

0.05% of Full Scale

Display assignment

Dsplay

Line 1

PV: Process variable

Line 2

Eng units: mV

Display intensity

d-Inty

Relay 1 action

Act 1

Automatic

Relay 1 set point

Set 1

10.00

Relay 1 reset point

RSt 1

5.00

Relay 2 action

Act 2

Automatic

Relay 2 set point

Set 2

20.00

Relay 2 reset point

RSt 2

15.00

Relay 3 action

Act 3

Automatic

Relay 3 set point

Set 3

30.00

Relay 3 reset point

RSt 3

25.00

Relay 4 action

Act 4

Automatic

Relay 4 set point

Set 4

40.00

Relay 4 reset point

RSt 4

35.00

Fail-safe relay 1

Fls 1

Off

Fail-safe relay 2

Fls 2

Off

Fail-safe relay 3

Fls 3

Off

Fail-safe relay 4

Fls 4

Off

Parameter

Display

Default Setting

On delay relay 1

On 1

0.0 sec

Off delay relay 1

Off 1

0.0 sec

On delay relay 2

On 2

0.0 sec

Off delay relay 2

Off 2

0.0 sec

On delay relay 3

On 3

0.0 sec

Off delay relay 3

Off 3

0.0 sec

On delay relay 4

On 4

0.0 sec

Off delay relay 4

Off 4

0.0 sec

Display 1 analog out

Dis 1

0.00

Output 1 value

Out 1

4.000 mA

Display 2 analog out

Dis 2

100.00

Output 2 value

Out 2

20.000 mA

Source analog output

Source

Process Variable Overrange output

O-rang

21.000 mA

Underrange output

u-rang

3.000 mA

Maximum output

nmAx

23.000 mA

Minimum output

nmin

1.000 mA

Slave ID (Address)

SlavId

247

Baud rate

baud

9600

Transmit delay

Tr dly

10 ms

Parity

Even

Byte-to-byte timeout

t-byt

010 (0.1 sec)

F1 function key

Zero

F2 function key

Reset Tare

F3 function key

Tare

F4 Function

Acknowledge relays

Digital input 1

dI 1

Digital input 2

dI 2

Right arrow/F1

Digital input 3

dI 3

Up arrow/F2

Digital input 4

dI 4

Enter/F3

Digital output 1

dO 1

Alarm 1

Digital output 2

dO 2

Alarm 2

Digital output 3

dO 3

Alarm 3

Digital output 4

dO 4

Alarm 4

Password 1

Pass 1

000000 (unlocked)

Password 2

Pass 2

000000 (unlocked)

Password 3

Pass 3

000000 (unlocked)

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Troubleshooting Tips

This meter is a highly sophisticated instrument with an extensive list of features and capabilities. If the programming buttons are used to program the meter, it may be a difficult task to keep everything straight. That is why we strongly recommend the use of the free MeterView Pro software for all programming activities. A USB cable is provided with the meter for programming with MeterView Pro software.

If you have programmed the meter with the programming buttons and it is not working as intended, try re-programming the meter using MeterView Pro software.

Symptom

Check/Action

No display at all

Check power at power connector

Not able to change setup or programming, Locd is displayed

Meter is password-protected, enter correct six-digit password to unlock or Master Password of 508655

Meter does not respond to input change

If a Low-Value Cutoff has been programmed, the meter will display zero below that point, regardless of the input – which can appear like the meter is not responding to an input change. Check to make sure the problem is not being caused by an undesired low-value cutoff setting. To prevent the display from showing a negative value, set the low-flow cutoff to a value greater than zero.

Meter displays error message during calibration (Error)

Check:

1. Signal connections

2. Input selected in Setup menu

3. Minimum input span requirements

Meter displays

1. 999999

2. -99999

3. fault

Check:

1. Input selected in Setup menu

2. Signal at Signal connector

3. Input exceeds range selected

Display is unstable

Check:

1. Input signal stability and value

2. Display scaling vs. input signal

3. Filter and bypass values (increase)

4. Increase Rounding value

Display response is too slow

Check filter and bypass values

Display reading is not accurate

Check:

1. Scaling or calibration

2. Change Line 2 to mV and check to make sure you are receiving the correct mV value from sensor

Display value is drifting over time with no load

Try increasing Auto-Zero value. See Auto-Zero (

Auto 0

) on page 52.

Display does not respond to input changes, reading a fixed number

Check display assignment, it might be displaying max, min, or set point

Display alternates between

1. Hi and a number

2. Lo and a number

Press Menu to exit max/min display readings

Relay operation is reversed

Check:

1. Fail-safe in Setup menu

2. Wiring of relay contacts

Relay and status LED do not respond to signal

Check:

1. Relay action in Setup menu

2. Set and reset points

Flashing relay status LEDs

Relays in manual control mode or relay interlock switches opened

Meter not communicating with application programs

Check:

1. Serial adapter and cable

2. Serial settings

3. Meter address and baud rate

If the display locks up or the meter does not respond at all

Cycle the power to reboot the microprocessor

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

Troubleshooting Tips

Symptom

Check/Action

SafeTouch buttons do not respond

1. If mechanical button was pushed, the SafeTouch buttons will be re-enabled automatically 60 seconds after the last button push.

2. If slide switch on connector board is in DISABLE position, switch to ENABLE.

3. Strong direct sunlight may interfere with SafeTouch button operation. It is recommended to operate the buttons by standing so as to block direct sunlight.

Serial Communications METER LINK LED Indicator is off

Check:

1. Modular cable connection

2. Power to the device

If only the TX (or DATA IN) data status LED is flashing when serial communications attempted

Check:

1. Serial cable

2. Instrument address & baud rate

3. Program address & baud rate

If both data status LEDs (TX and RX) are off when trying to communicate

Remove all unnecessary cables and instruments from the bus. Try getting the system to work with only one device (to ease troubleshooting) and then expand the system one device at a time.

Communications slow

Increase the baud rate

Sensor is not receiving power from PD8-6100

Check and make sure Excitation (Switch 1) is set to ON for Internal Excitation. See Excitation (Switch 1) on page 25 for more details.

Random communication errors

1. Increase the TX delay time

2. Decrease the baud rate

Other symptoms not described above

Call Technical Support for assistance.

Note: Certain sequences of events can cause unexpected results. To solve these issues, it is best to start fresh from factory defaults and use the manual as a step by step programming guide, rather than a random approach to programming. To reset the meter to factory defaults, see Reset Meter to Factory Defaults on page 58. In addition, for best results, we recommend using the free MeterView Pro software for all programming needs.

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

NOTES

Page 63

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ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA Tel (800) 343-1001 • Fax (508) 655-8990

www.predig.com

LIM8-6100_G

SFT071 Ver 4.211 & up

07/22

Contact Precision Digital

Technical Support

Call: (800) 610-5239 or (508) 655-7300 Fax: (508) 655-8990 Email: [email protected]

Sales Support

Call: (800) 343-1001 or (508) 655-7300 Fax: (508) 655-8990 Email: [email protected]

Place Orders

Email: [email protected]

For the latest version of this manual please visit

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