Precision Digital Corporation ProtEX-MAX PD8-6060 User manual

PD8-6060Explosion-ProofDualAnalogInputProcessMeter
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•Fully-Approved Explosion-Proof Meter
•Dual 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs with Math Functions
•Addition, Difference, Average, Multiplication, Division, Minimum, Maximum, Ratio, & More
•Dual-Line 6-Digit Display, 0.6" (15 mm) & 0.46" (12 mm)
•SafeTouch Through-Glass Button Programming
•Display Mountable at 0°, 90°, 180°, & 270°
•Isolated 24 VDC @ 25 mA Transmitter Power Supply
•Easy Field Scaling in Engineering Units without Applying an Input
•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
•Multi-Pump Alternation Control
•Password Protection
•32-Point Linearization, Square Root Extraction and Programmable Exponent Function
•Round Horizontal Tank Function; Just Enter Diameter & Length
•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 Standard
•Modbus®RTU Communication Protocol Standard
•Four 3/4" NPT Threaded Conduit Openings (Two Plugs Installed)
•Pipe Mounting Kits
•Stainless Steel Tag Available
•3-Year Warranty
MeterView Pro
USB Install

2

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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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.
© 2022 Precision Digital Corporation.
All rights reserved.
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 buttons and the instructions in this
manual to do so.
•The meter should only be connected to a
computer while it is located in a safe area.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Table of Contents
Introduction......................................................................................................... 7
Ordering Information.......................................................................................... 7
Key Features....................................................................................................... 9
Specifications................................................................................................... 18
General........................................................................................................... 18
Dual Process Inputs ..................................................................................... 19
Relays ............................................................................................................ 19
USB Connection............................................................................................ 20
Isolated 4-20 mA Transmitter Output.......................................................... 20
RS-485 Serial Communications................................................................... 20
Modbus®RTU Serial Communications ....................................................... 20
Digital Input (F4)............................................................................................ 20
Digital Inputs & Outputs............................................................................... 21
MeterView Pro Software............................................................................... 21
Compliance Information................................................................................... 21
Electromagnetic Compatibility .................................................................... 21
Product Ratings and Approvals .................................................................. 22
EU Declaration of Conformity.......................................................................... 23
Safety Information............................................................................................ 23
Installation......................................................................................................... 23
Unpacking...................................................................................................... 23
Mounting........................................................................................................ 24
Installation Overview.................................................................................... 26
MeterView Pro Software............................................................................... 26
Transmitter Supply Voltage Selection (P+, P-)........................................... 27
Connections.................................................................................................. 27
Required & Factory Wired Connection....................................................... 27
PROVU Electronics Module Layout............................................................. 28
USB Connection ........................................................................................ 28
Power Connections.................................................................................... 29
Signal Connections.................................................................................... 29
RS-485 Connections.................................................................................. 30
RS-485 Multi-Drop Connection.................................................................. 30
Digital I/O Connections .............................................................................. 31
F4 Digital Input Connections...................................................................... 31
Remote Programming................................................................................ 31
4-20 mA Output Connections..................................................................... 31
Analog Output Power Supply..................................................................... 31
Relay Connections..................................................................................... 32
Interlock Relay Feature.............................................................................. 32
Switching Inductive Loads.......................................................................... 32
Setup and Programming.................................................................................. 33
Overview........................................................................................................ 33
LED Status Indicators................................................................................... 33
Programming Buttons.................................................................................. 34
SafeTouch Buttons....................................................................................... 34
Display Functions & Messages ................................................................... 35
Main Menu ..................................................................................................... 37
Setting Numeric Values................................................................................ 37
Setting Up the Meter (setup)........................................................................ 37
Setting the Input Signal (Input)................................................................. 38
Setting the Display Units or Custom Tags (units).................................... 38
Setting the Decimal Point (dEc pt) ........................................................... 39
Programming the Meter (prog).................................................................. 39
Setting the Display Parameter & Intensity (dsplay) .................................. 41

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Setting the Relay Operation (relay)............................................................ 42
Setting the Relay Assignment (asSign)..................................................... 42
Setting the Relay Action............................................................................. 42
Programming Set and Reset Points........................................................... 43
Setting Fail-Safe Operation........................................................................ 43
Programming Time Delay .......................................................................... 43
Relay Action for Loss of 4-20 mA Input (Loop Break)................................ 43
Relay and Alarm Operation Diagrams......................................................... 43
High Alarm Operation (Set > Reset)............................................................. 43
Low Alarm Operation (Set < Reset)........................................................... 44
High Alarm with Fail-Safe Operation (Set > Reset).................................... 44
Low Alarm with Fail-Safe Operation (Set < Reset)..................................... 44
Time Delay Operation................................................................................ 44
Pump Alternation Control Operation.......................................................... 45
Relay Sampling Operation......................................................................... 45
Relay Operation Details................................................................................ 46
Overview.................................................................................................... 46
Relays Auto Initialization............................................................................ 46
Fail-Safe Operation.................................................................................... 46
Front Panel LEDs....................................................................................... 46
Latching and Non-Latching Relay Operation ............................................. 46
Non-Latching Relay (Auto)........................................................................ 47
Non-Latching Relay with Manual Reset (A-nman)...................................... 47
Latching Relay (LatcH).............................................................................. 47
Latching Relay with Clear (Lt-Clr)........................................................... 47
Acknowledging Relays............................................................................... 48
Pump Alternation Control Applications (Altern) ....................................... 48
Setting Up the Interlock Relay (Force On) Feature................................... 49
Scaling the 4-20 mA Analog Output (Aout)................................................. 50
Reset Menu (reset) ...................................................................................... 50
Manual Control Menu (Contrl).................................................................... 50
Setting Up the Password (pass) .................................................................. 51
Protecting or Locking the Meter................................................................. 51
Making Changes to a Password Protected Meter...................................... 51
Disabling Password Protection .................................................................. 51
Advanced Features Menu............................................................................. 52
Advanced Features Menu & Display Messages......................................... 52
Noise Filter (filter) ................................................................................. 53
Noise Filter Bypass (bypass)..................................................................... 53
Rounding Feature (round)......................................................................... 54
Modbus®RTU Serial Communications (serial)....................................... 54
Select Menu (SElect)................................................................................ 54
Input Signal Conditioning (Functn)............................................................ 54
Square Root Linearization (Square).......................................................... 55
Math Constants (Const)............................................................................. 56
Low-Flow Cutoff (CutofF).......................................................................... 56
Analog Output Programming (AoutPr) ...................................................... 57
Programmable Function Keys User Menu (user)...................................... 58
Tare (tare)................................................................................................ 59
Internal Calibration (ICAL).......................................................................... 59
Meter Operation................................................................................................ 60
Button Operation .......................................................................................... 60
SafeTouch Buttons....................................................................................... 60
Function Keys Operation ............................................................................. 61
Digital Inputs Operation ............................................................................... 61
Maximum/Minimum Readings...................................................................... 61
Troubleshooting............................................................................................... 62
Diagnostics Menu (diag).............................................................................. 62
Testing the Display LEDs........................................................................... 62
Determining Software Version ................................................................... 62
Reset Meter to Factory Defaults.................................................................. 62
Factory Defaults & User Settings............................................................... 63
Troubleshooting Tips ................................................................................... 65

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Table of Figures
Figure 1. Enclosure Dimensions –Front View............................................... 24
Figure 2. Enclosure Dimensions –Side Cross Section View ....................... 24
Figure 3. Transmitter Supply Voltage Selection ............................................ 27
Figure 4. Integrated PROVURequired Connections....................................... 27
Figure 5. PROVUElectronics Module Layout.................................................. 28
Figure 6. USB Connection ............................................................................... 28
Figure 7. Power Connections.......................................................................... 29
Figure 8. 2-Wire Transmitters Powered by Internal Supply......................... 29
Figure 9. 3-Wire Transmitters Powered by Internal Supply......................... 29
Figure 10. Transmitter Powered by External Supply...................................... 29
Figure 11. Self-Powered Transmitters ............................................................ 29
Figure 12. 2-Wire Voltage Input Connections ................................................ 29
Figure 13. 3-Wire Voltage Input Connections ................................................ 29
Figure 14. RS-485 Connection......................................................................... 30
Figure 15. Three-Wire RS-485 Connection..................................................... 30
Figure 16. Digital Input and Output Connections .......................................... 31
Figure 17. F4 Digital Input Connections......................................................... 31
Figure 18. 4-20 mA Output Connections ........................................................ 31
Figure 19. Analog Output Supply Powering Other Devices.......................... 31
Figure 20. Relay Connections ......................................................................... 32
Figure 21. Interlock Connections.................................................................... 32
Figure 22. AC and DC Loads Protection......................................................... 32
Figure 23. Low Voltage DC Loads Protection................................................ 32

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Introduction
The ProtEX MAX PD8-6060 is an explosion-proof
dual-input process meter that accepts, powers, and
displays two analog inputs, such as 4-20 mA or
0-10 V. In its simplest configuration, the meter can
display these two inputs at the same time on its
dual-line display in user desired engineering units.
For more demanding applications, the meter can
display a mathematical function of these two inputs
such as addition, difference, average, multiplication
and more. The meter is ideal for level, flow rate,
temperature, or pressure transmitter applications.
The meter 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 ProtEX-MAX is available in two configurations:
display only and fully loaded. Both versions include a
24 VDC power supply to power the transmitter. A fully
loaded ProtEX-MAX PD8-6060-6H7 meter comes
with four SPDT relays, a 4-20 mA output, five digital
inputs and four digital outputs, and RS-485 serial
communications.
The four relays can be used for alarm indication or
process control applications such as pump alternation
control. 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
PD8-6060-6H0
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
No options
PD8-6060-6H7
4 relays
4-20 mA output
12-24 VDC Models
Model
Standard
Features
Options
Installed
PD8-6060-7H0
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
No options
PD8-6060-7H7
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

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
8
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
Learnhoweasy itistoprogram theProVu (ProtEX-MAX)
processmeterusingMeterViewProsoftware.
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
4-20 mA Connections
This Tech Tips video shows how to make connections
to power the transmitter with the ProVu’s
(ProtEX-MAX’s) 24 VDC power supply.
predig.com/videos/4-20_mA_Connections
Use ProtEX-MAX for Pump Control
Learn how to use the ProVu (ProtEX-MAX) meter as
an explosion-proof pump controller. See how the four
relays can be used to alternate two pumps and
provide high and low alarms.
predig.com/videos/PumpControl
Dual-Input Process Meter
Learn about the dual-input display, math capabilities,
and other great features that make this one of the
most power Precision Digital meters available.
https://www.predig.com/PD6060_Dual_Input_Intro

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Key Features
Connections for PD8-6060-6H7 & PD8-6060-7H7
The Only Explosion-Proof Dual-Input Process Meter You Will Ever Need
Front, back and in between, the PD8-6060 ProtEX-MAX
explosion-proof dual-input process meterboasts specifications,
features and functionality that make it the only hazardous
area dual-input process meter you will ever need. The front
panel push-buttons can even be operated in a hazardous
area without removing the cover by using the SafeTouch
through-glass feature.
The PD8-6060 has all the same features as our PD6060
1/8 DIN process meter, but it is not just a meter stuffed in an
explosion-proof enclosure like many of our competitors offer.
The PD8-6060 is approved as a complete product by FM and
CSAand alsocarries IECExapprovals.Besidesbeing suitable for
hazardous areas, the number one feature that makes the
PD8-6060such auseful device is its built-in24VDC power
supply to drive the transmitters as illustrated by the above
diagram. This feature not only saves the cost of an external
power supply, but also greatly simplifies wiring. In addition,
there is a second 25 mA power supply provided with the
4-20 mA output option, evident also in the above diagram.
The first thing you notice about the PD8-6060 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 PD8-6060 has two process input channels (A & B)
capable of accepting current (0-20, 4-20 mA) and voltage
(±10, 0-5, 1-5, 0-10 VDC). Each input is programmed
separately, with independent input type selection and
scaling. These inputs may be displayed individually as part
of the customizable dual-line display, or used with a wide
range of math functions. Each input has a custom unit or tag
that may be displayed.
The most common use for the PD8-6060 is to display two
separate inputs on the meter’s dual-line display. For more
demanding applications, the meter can display a
mathematical function of these two inputs such as addition,
difference, average, multiplication and more.
Other key features include four relays and 4-20 mA output
option, advanced signal input conditioning like automatic
round horizontal tank linearization, function keys, pump
alternationcapability,andModbus® RTUserial communications.
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.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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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.
MeterView Pro can be used to scale both of the inputs
(Channel A & Channel B) on the PD8-6060. In the
example below, Channel A has nine points of
linearization and Channel B has two points.
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.
Advanced Display Features
Dual-Line Makes All the Difference
The ProtEX-MAX has two red LED displays, a main
display 0.60" (15 mm) high, and a second display
0.46" (12 mm) high. Each display is a full 6 digits
(-99999 to 999999).
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.
Programming Assistance
The ProtEX-MAX's dual-line display makes
programming the instrument much easier because the
second line 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 20.00 mA. The “2”
in 20.00 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 20 mA. In this case Display 2 is
currently set to 95.00.
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.
Rounding for Even 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.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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Customizable Displays
The ProtEX-MAX has two red LED displays, a main display 0.60" (15 mm) high, and a second display 0.46" (12 mm)
high. Each display is a full 6 digits (-99999 to 999999).
The displays can be set up to read input channels (A or B), math function channel C, toggle between A & B, B & C,
A & C, A & B & C, toggle between channels A, B, or C & units, the max/min of any of the channels, including the math
channel (C), set points, gross (without tare) or net (with tare) & gross values of channel A or B, or the Modbus®input.
This allows the display to be setup to display whatever variables are most valuable to the application. Here are just a
few examples.
Input Channels A & B
Both input channels are displayed with input A on the main display and input B on the second display
as indicated by LEDs (A & B) on the display. The meter also toggles between the units for these inputs.
Math Function & Inputs A & B
The main display shows the math function result (C); in this case Channel A divided by Channel B.
The second display alternates between channels A and B, with an indicator to indicate which channel is
being displayed.
Math Function & Tag
The main display shows the math function result (C) of the two input channels (A & B).
The second display shows a custom label, in this case the math function used.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
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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 meter
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.
SafeTouchThrough-GlassButtons
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.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
13
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 making them
removable also.
Note: The above photograph is representative of the back of
the PD8-6060 in every regard except for the signal input
connector. See Figure 5 on page 28 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.
WideOperatingTemperatureRange
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

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
14
Transmitter Power Supplies
Meter Powers Transmitters
One of the most useful standard features of the
PD8-6060 is its built-in isolated, 24 V @ 25 mA power
supply to power the transmitters. This feature saves
money by eliminating an external power supply and
also simplifies wiring by reducing the number of
devices in the loop. It can be configured for 5, 10, or
24 V (default) by means of a simple internal jumper.
This power supply is even available on meters that
are powered from DC power (24 V @ 25 mA). To use
an external power supply instead of the internal power
supply, simply make connections to different terminals
on the ProtEX-MAX.
The following diagram illustrates how to wire the
ProtEX-MAX so it will power the transmitters:
Meter Powers 4-20 mA Output
Not only can the ProtEX-MAX power the 4-20 mA
input signal, but an additional power supply of
24 V @ 25 mA is provided with the 4-20 mA output
option to power the 4-20 mA output.
Fuse Prevents Current Overload
Another very useful aspect of the ProtEX-MAX is that
the current input is protected against current overload
by a resettable fuse. The fuse limits the current to a
safe level when it detects a fault condition, and
automatically resets itself when the fault condition is
removed.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
15
Input Signal Conditioning
Non-linear input signals (i.e. weirs & flumes,
differential pressure, round horizontal tanks, etc.)
can be linearized with the ProtEX-MAX’s simple to
use built-in signal input conditioning functions.
These include square-root extractor, exponential
linearizer, round horizontal tank linearizer, and
user-customizable 32-point linearizer.
Round Horizontal Tank Linearization
This function automatically calculates the volume in a
round horizontal tank with flat ends.
The PD8-6060 is powering and displaying the output
from two level sensors in two different tanks. The
meter is currently displaying the sum of these two
tanks but is also programmed to toggle between the
sum and the actual volume in both tanks.
Using MV Pro for RHT Function
MeterView Pro can be used to easily program the
meter to display volume in a round horizontal tank.
The user merely selects the RHT Signal Input
Conditioning function from the drop-down menu and
enters the diameter and length of the tank and the
meter does the rest!
Round Horizontal Tank Function
Square Root Linearization
The square root function is used to calculate flow
measured with a differential pressure transmitter.
The flow rate is proportional to the square root of the
differential pressure. Scale the meter so that the low
input signal (e.g. 4 mA) is equal to zero flow and the
high input signal (e.g. 20 mA) is equal to the
maximum flow.
Open-Channel Flow Calculated
Using Exponential Signal Input
Conditioner
The programmable exponent can be used to linearize
the signal from level transmitters in open-channel flow
applications using weirs and flumes.
Multi-Point Linearization
The most common way to linearize a non-linear signal
is to break it up into smaller ranges that are more
linear than the overall range. The PD8-6060 is
available with up to 32 points of linearization for both
inputs. The linearization data can be imported from an
Excel spreadsheet or can be exported from
MeterView Pro to an Excel spreadsheet.
Using MVPro forMulti-PointLinearization
The above graphic illustrates Channel A input being
linearized with nine scaling points and Channel B
using the more standard two-point scaling method.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
16
Explosion-Proof Dual-Pump Alternation in Two Tanks
The ProtEX-MAX can be used as an explosion-proof pump controller when combined with a continuous level
transmitter. Since the PD8-6060 accepts two 4-20 mA inputs (from two different level transmitters) and can be
equipped with four relays, it could be used to control and alternate two pumps in two different tanks as well as provide
the 24 V to power the transmitters. The illustration below shows how the relays control both the main and backup
pumps to maintain the levels in tanks 1 and 2.
Learn how to use the ProVu (ProtEX-MAX) meter as an explosion-proof pump controller.
See how the four relays can be used to alternate two pumps and provide high and low alarms.
predig.com/videos/PumpControl

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
17
Useful Tools
PD9501 Multi-Function Calibrator
This PD9501 Multi-Function Calibrator has a variety
of signal measurement and output functions, including
voltage, current, thermocouple, and RTD.
PD9502 Low-Cost Signal Generator
The PD9502 is a low-cost, compact, simple to use
4-20 mA or 0-10 VDC signal generator. It can easily
be set for 0-20 mA, 4-20 mA, 0-10 V or 2-10 V
ranges. Signal adjustment is made with a one-turn
knob. A 15-27 VDC wall plug is provided with the
instrument. Optional USB power bank is available.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
18
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 intensity is six.
Display
Update Rate
5/second (200 ms)
LED Status
Indicators
See LED Status Indicators on page 33 for
details.
Overrange
Display flashes 999999
Underrange
Display flashes -99999
Display
Assignment
Display Line 1:
Channels A (Ch-A), B (Ch-B), or C (Ch-C),
toggle between (Ch-A & Ch-B, Ch-A &
Ch-C, Ch-B & Ch-C, and Ch-A, Ch-B, &
Ch-C), toggle between channel & units,
channel gross weight, toggle net and
gross weights, set points, max & min
values, or Modbus®input
Display Line 2:
Same as Display Line 1; plus units, tag or
turned off
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 turned off.
Rounding
Select 1, 2, 5, 10, 20, 50, or 100
(e.g. rounding = 10, value = 123.45,
display = 123.50).
Tare
Tare function zeros out the meter to
remove the weight of a container. Tare
function can be assigned to a function key,
F4 terminal, or a digital input.
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
85-265VAC50/60Hz;90-265VDC,20Wmax;
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/output-to-power line
500 V input-to-output or output-to-P+ supply
Overvoltage
Category
Installation Overvoltage Category II:
Locallevelwithsmallertransientovervoltages
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 24 for
additional details.
Pipe Mounting:
Optional pipe mounting kit (PDA6848)
allows for pipe mounting. Sold separately.
See Pipe Mounting Instructions on page
25 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.

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
19
Dual Process Inputs
Two Inputs
Two non-isolated inputs, independent, field
selectable: 0-20 mA, 4-20 mA, 10 V (0-5 V,
1-5 V, 0-10 V), Modbus®PV (Slave)
Isolated
Transmitter
Power Supply
Terminals P+ & P-: 24 VDC ± 10%.
Isolated from the input at >500 V. Jumper
selectable for 24, 10, or 5 VDC supply
(internal jumper J4). All models transmitter
supply rated @ 25mA max.
Refer to Transmitter Supply Voltage
Selection (P+, P-) on page 27.
Channels
Channel A, Channel B,
Channel C (Math channel)
Programmable
Constants
Constant P (Adder):
-99.999 to 999.999, default: 0.000
Constant F (Factor):
0.001 to 999.999, default: 1.000
Math
Functions
Name
Function
Setting
Addition
(A+B+P)*F
Sunm
Difference
(A-B+P)*F
diF
Absolute diff.
((Abs(A-B))+P)*F
diFAbS
Average
(((A+B)/2)+P)*F
AvG
Multiplication
((A*B)+P)*F
nmulti
Division
((A/B)+P)*F
diVide
Max of A or B
((AB-Hi)+P)*F
Hi-Ab
Min of A or B
((AB-Lo)+P)*F
Lo-Ab
Draw
((A/B)-1)*F
drAuw
Weighted avg.
((B-A)*F)+A
uw avg
Ratio
(A/B)*F
ratio
Ratio 2
((B-A)/A)+P)*F
ratio2
Concentration
(A/(A+B))*F
Concen
Note: The F constant can be any value from
0.001 to 999.999. If the value is less than 1,
it will have the same effect as a divider. For
example, the average could also be derived
by using (A+B)*F, where F = 0.500.
Sequence of
Operations
for Input
Programming
1. Select Input for A and B
2. Set up the engineering units for
A, B, and C
3. Set up decimal point for A, B, and C
4. Program A & B
5. Set up the displays for A, B, or C
6. Select the transfer function for A & B
(e.g. Linear)
7. Select Math function for Channel C
8. Program constants for Factor (F) and
Adder (P)
9. Program cutoff values for A and B
Accuracy
±0.03% of calibrated span ±1 count,
square root & programmable exponent
accuracy range: 10-100% of calibrated
span
Temperature
Drift
0.005% of calibrated span/C max from
0 to 65C ambient, 0.01% of calibrated
span/C max from -40 to 0C ambient
Input Signal
Conditioning
Linear, square root, programmable
exponent, or round horizontal tank volume
calculation
Multi-Point
Linearization
2 to 32 points for channels A and B
Programmable
Exponent
User selectable from 1.0001 to 2.9999 for
open channel flow
Low-Flow
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 & 2
4-20 mA
0.15 mA
10 V
0.10 V
An error message will appear if the input 1
and input 2 signals are too close together.
Input
Impedance
Voltage ranges: greater than 500 k
Current ranges: 50 - 100 (depending on
internal resettable fuse impedance)
Input
Overload
Current input protected by an internal
resettable fuse, 30 VDC max. Fuse resets
automatically after fault is removed.
HART
Incompatible
The meter can support ONLY one HART
loop on either of the inputs. A signal
isolator is required if two HART loops are
being connected.
Under the described conditions, the meter
does not interfere with existing HART
communications; it displays the 4-20 mA
primary variable and it allows the HART
communications to pass through without
interruption. The meter is not affected if a
HART communicator is connected to the
loop. The meter does not display
secondary HART variables.
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 32 for details.
Relay
Assignment
Relays may be assigned to Ch-A, Ch-B,
Ch-C, or Modbus®input
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 (2-4 relays)
•Sampling (based on set point and 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

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
20
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.
Isolated 4-20 mA Transmitter
Output
Output
Source
Process channel A, B, or C, max or min for
channel A, B, or highest or lowest of A and
B, 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:
4.000 to 20.000 = 4-20 mA output
Analog Out
Programming
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. May be
used to power the 4-20 mA output or other
devices. All models @ 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 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 Helios Modbus®Register Tables located
at www.predig.com for details.
Digital Input (F4)
Function
Remote operation of front-panel buttons,
acknowledge/reset relays, reset max/min
values. See Function Keys & Digital I/O
Available Settings on page 58 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