Precision Digital Corporation ProtEX-MAX PD8-6300 User manual

ProtEX-MAX PD8-6300 Pulse Input
Rate/Totalizer, Counter and Tachometer
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•Fully-Approved Explosion-Proof Flow Rate/Totalizers
•Pulse, Open Collector, NPN, PNP, TTL, Switch Contact, Sine Wave (Coil), Square Wave Inputs
•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 5, 10 or 24 VDC Flowmeter Power Supply
•Gate Function for Rate Display of Slow Pulse Rates
•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
•Display Rate & Total at the Same Time
•Rate in Units per Second, Minute, Hour, or Day
•Total, Grand Total or Non-Resettable Grand Total
•Front Panel or Remote Total Reset
•Password Protection for Total Reset
•Total Stored in Non-Volatile Memory
•Assign Any Relay or 4-20 mA Output for Rate or Total
•K-Factor, Internal Scaling, or External Calibration
•4-20 mA Output Option Converts the Pulse Input to an Isolated 4-20 mA Output
•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
•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)
•3-Year Warranty
MeterView Pro
USB Install

2

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
4
Table of Contents
Introduction......................................................................................................... 7
Ordering Information.......................................................................................... 7
Key Features....................................................................................................... 9
Specifications................................................................................................... 15
General.......................................................................................................... 15
Pulse Inputs.................................................................................................. 16
Rate/Totalizer................................................................................................ 16
Relays............................................................................................................ 17
USB Connection........................................................................................... 17
Isolated 4-20 mA Transmitter Output ......................................................... 17
RS-485 Serial Communications .................................................................. 18
Modbus®RTU Serial Communications....................................................... 18
Digital Input (F4)........................................................................................... 18
Digital Inputs & Outputs .............................................................................. 18
MeterView Pro Software .............................................................................. 18
Compliance Information................................................................................... 19
Electromagnetic Compatibility.................................................................... 19
Product Ratings and Approvals.................................................................. 19
EU Declaration of Conformity.......................................................................... 20
Safety Information............................................................................................ 20
Installation.......................................................................................................... 20
Unpacking..................................................................................................... 20
Mounting....................................................................................................... 21
Installation Overview ................................................................................... 23
MeterView Pro Software .............................................................................. 23
MeterView Pro Installation ......................................................................... 23
Flowmeter Supply Voltage Selection (P+, P-)............................................ 24
Connections ................................................................................................. 24
Required & Factory Wired Connection....................................................... 24
PROVUElectronics Module Layout............................................................. 25
USB Connection ........................................................................................ 25
Power Connections.................................................................................... 26
Signal Connections.................................................................................... 27
Relay Connections..................................................................................... 28
Interlock Relay Feature.............................................................................. 28
Switching Inductive Loads.......................................................................... 28
RS-485 Connections.................................................................................. 29
RS-485 Multi-Drop Connection.................................................................. 29
Digital I/O Connections .............................................................................. 29
F4 Digital Input Connections...................................................................... 29
4-20 mA Output Connections..................................................................... 30
Analog Output Power Supply..................................................................... 30
Remote Programming................................................................................ 30
Setup and Programming.................................................................................. 31
LED Status Indicators.................................................................................. 31
Programming Buttons ................................................................................. 32
SafeTouch Buttons ...................................................................................... 32
Display Functions & Messages................................................................... 33
Main Menu..................................................................................................... 35
Setting Numeric Values............................................................................... 35
Setting Up the Rate/Totalizer Meter (setup)............................................... 36
Setting the Input Signal (Input)................................................................. 36
Setting the Totalizer Features (total)....................................................... 36
Setting the Display Units or Custom Tags (units).................................... 37
Setting the Decimal Point (dEc pt) ........................................................... 37
Programming the Rate/Totalizer (prog)..................................................... 37
Setting the Display Parameter & Intensity (dsplay) .................................. 40
Display Intensity (d-Inty).......................................................................... 40

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
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Setting the Relay Operation (relay)........................................................... 41
Relay Assignment (Assign)....................................................................... 41
Setting the Relay Action............................................................................. 41
Programming Set and Reset Points........................................................... 42
Setting Fail-Safe Operation........................................................................ 42
Programming Time Delay .......................................................................... 42
Relay and Alarm Operation Diagrams........................................................ 43
High Alarm Operation (Set > Reset) .............................................................. 43
Low Alarm Operation (Set < Reset)........................................................... 43
High Alarm with Fail-Safe Operation (Set > Reset).................................... 43
Low Alarm with Fail-Safe Operation (Set < Reset)..................................... 43
Time Delay Operation .................................................................................. 44
Total Relay Sampling Operation................................................................ 44
Relay Operation Details............................................................................... 45
Overview.................................................................................................... 45
Relays Auto Initialization............................................................................ 45
Fail-Safe Operation.................................................................................... 45
Front Panel LEDs....................................................................................... 45
Latching and Non-Latching Relay Operation ............................................. 45
Non-Latching Relay (Auto)........................................................................ 46
Non-Latching Relay with Manual Reset (A-nman)...................................... 46
Latching Relay (LatcH).............................................................................. 46
Latching Relay with Clear (Lt-Clr)........................................................... 46
Acknowledging Relays............................................................................... 47
Setting Up the Interlock Relay (Force On) Feature.................................... 47
Scaling the 4-20 mA Analog Output (Aout)................................................ 48
Reset Menu (reset)...................................................................................... 48
Manual Control Menu (Contrl) ................................................................... 48
Setting Up the Password (pass).................................................................. 49
Protecting or Locking the Meter................................................................. 49
Total Reset Password & Non-Resettable Total.......................................... 49
Making Changes to a Password Protected Meter...................................... 49
Disabling Password Protection .................................................................. 49
Advanced Features Menu............................................................................ 50
Advanced Features Menu & Display Messages......................................... 50
Rounding Feature (round)......................................................................... 51
Modbus RTU Serial Communications (serial)......................................... 52
Select Menu (SElEct)................................................................................ 52
Input Signal Conditioning (Functn)............................................................ 52
Multi-Point Linearization (Linear) ............................................................. 52
Low-Flow Cutoff (CutofF).......................................................................... 52
Analog Output Programming (AoutPr) ...................................................... 53
Programmable Function Keys User Menu (user)...................................... 54
Meter Operation................................................................................................ 55
Button Operation.......................................................................................... 55
SafeTouch Buttons ...................................................................................... 55
Function Keys Operation............................................................................. 56
Digital Inputs Operation............................................................................... 56
Maximum/Minimum Readings..................................................................... 57
Totalizer Overflow Displays Total to 9 Digits............................................. 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............................................................... 58
Troubleshooting Tips................................................................................... 60

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
6
Table of Figures
Figure 1. Enclosure Dimensions –Front View............................................... 21
Figure 2. Enclosure Dimensions –Side Cross Section View ....................... 21
Figure 3: Flowmeter Supply Voltage Selection.............................................. 24
Figure 4. Integrated PROVURequired Connections ....................................... 24
Figure 5. PROVUElectronics Module Layout.................................................. 25
Figure 6. USB Connection ............................................................................... 25
Figure 7: Power Connections.......................................................................... 26
Figure 8: Flowmeter Powered by Internal Power Supply.............................. 27
Figure 9: Flowmeter Powered by External Supply ........................................ 27
Figure 10: Self-Powered Magnetic Pickup Coil Flowmeter........................... 27
Figure 11: NPN open Collector Input.............................................................. 27
Figure 12: PNP Sensor Powered by Internal Supply..................................... 27
Figure 13: Switch Input Connections ............................................................. 27
Figure 14: Relay Connections......................................................................... 28
Figure 15: Interlock Connections.................................................................... 28
Figure 16: AC and DC Loads Protection ........................................................ 28
Figure 17: Low Voltage DC Loads Protection................................................ 28
Figure 18. RS-485 Diagnostic LEDs................................................................ 29
Figure 19. Three-Wire RS-485 Connection..................................................... 29
Figure 20. Digital Input and Output Connections .......................................... 29
Figure 21. F4 Digital Input Connections......................................................... 29
Figure 22: 4-20 mA Output Connections........................................................ 30
Figure 23. Analog Output Supply Powering Other Devices.......................... 30

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
7
Introduction
The ProtEX-MAX PD8-6300 is an explosion-proof,
pulse input flow rate/totalizer ideal for flow rate, total
and control 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 meter accepts a wide variety of pulse signals that
can be displayed as flow rate, total and grand total. In
fact, the ability to display flow rate and total at the
same time, or other combinations of rate, total and
grand total, is one of the most useful features of the
dual-line display.
The ProtEX-MAX is available in two configurations:
display only and fully loaded. Both versions include a
24 VDC power supply to power the flowmeter. A fully
loaded ProtEX-MAX PD8-6300-6H7 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 purposes. 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.
One of the most useful applications for the PD8-6300
is to convert the pulse input from the flowmeter into
an isolated 4-20 mA output all the while displaying
flow rate and total on a big bright display as the
following graphic illustrates:
Ordering Information
85-265 VAC Models
Model
Standard
Features
Options
Installed
PD8-6300-6H0
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
No options
PD8-6300-6H7
4 relays
4-20 mA output
12-24 VDC Models
Model
Standard
Features
Options
Installed
PD8-6300-7H0
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
No options
PD8-6300-7H7
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
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

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
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
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

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
9
Key Features
Connections for PD8-6300-6H7 & PD8-6300-7H7
The Only Explosion-Proof Totalizer, Counter & Tachometer You Will Ever Need
The ProtEX-MAX PD8-6300 explosion-proof flow
rate/totalizers are specifically designed fordisplaying
flow rate and total from flowmeters with pulse outputs.
The meter boasts specifications, features and
functionality that make it the only hazardous area flow
rate/totalizer you will ever need.
The PD8-6300 has all the same features as our
PD6300 1/8 DIN flow rate/totalizer, but it is not just a
meter stuffed in an explosion-proof enclosure like many
of our competitors offer. The PD8-6300 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 PD8-6300 such a useful device is its built-in 5, 10
or 24 VDC power supply to drive the flowmeter 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.
The first thing you notice about the PD8-6300 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 display flow rate, total,
or grand total, and the second display can be
programmed to display flow rate, total, grand total,
engineering units, custom legends, or turned off.
PROVU flow rate/totalizers can be programmed for a
wide variety of totalizer applications. They can display
total, grand total, or non-resettable grand total with a
time base of seconds, minutes, hours or days. The
user can program a totalizer conversion factor, a
non-resettable grand total, password protection, and
several total reset methods. 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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
10
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 meter comes from the factory pre-calibrated for
all pulse inputs, so the user need only set the
mV / PNP / NPN switch in the appropriate position
based on the input and also set the desired excitation
voltage level. Once programming is completed, the
meter 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.
Advanced Display Features
Display Flow Rate, Total or Grand Total
The main display can be programmed to display flow
rate, total, or grand total, and the second display can
be programmed to display flow rate, total, grand total,
engineering units, custom legends, or can be turned
off. Both displays could also display relay set points,
or max and min values. The following photographs
show typical ways these flow rate/totalizers can be
programmed.
Flow Rate Indicator Flow Totalizer
Rate & Total Total & Grand Total
Easy to Use
The user-friendly dual-line display makes the PROVU
easy to set up & program. No jumpers to set for input
selection. All setup & programming are done via the
front panel.
Input Setup Display Setup
Totalizer Overflow Displays Total to 9 Digits
These flow rate/totalizers can display up to nine digits of
total flow with the total overflow feature. In the diagram
below, the flow totalizer is displaying 532,831,470 by
toggling between a display of “oF 532” and “831470”.
Notice the (T with arrow ▲ symbol) is lit up indicating
the display is in overflow mode.
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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
11
Rate/Totalizer Features
ProtEX-MAX flow rate/totalizers can be programmed
for a wide variety of rate and totalizer applications.
They can display rate, total, grand total, or a
non-resettable grand total with a time base of
seconds, minutes, hours or days. The user can
program a totalizer conversion factor, a non-resettable
grand total, password protection, and several total
reset methods. The dual-line display can be
programmed to display rate and total at the same
time, or a variety of other rate, total and grand total
combinations.
Display Rate & Total at Same Time
One of the most useful features of the ProtEX-MAX
flow rate/totalizers is their ability to display both flow
rate and total at the same time. Whereas a single-line
display would have to toggle between the rate and the
total, the ProtEX-MAX’s dual-line display can display
them both at the same time.
Totalizer Password Protection
The total and grand total can be password protected
so they can be reset only by authorized personnel.
Total Password Grand Total Password
Non-Resettable Grand Total
The user can set up the grand total to be
non-resettable by entering a specific password.
Once this is done, the grand total can never be reset.
Totalizer Conversion Factor
The user can enter a totalizer conversion factor that
allows the meter to display total in different units than
the rate. For instance, a customer could measure flow
rate in gallons per minute and total in hundredths of
acre-feet.
Rate in Units Per Sec, Min, Hr, or Day
The user may select a rate time base in units per
second, minute, hour, or day. The time base is the
amount of time over which the rate parameter will
totalize. For example, if the rate was ten (and stayed
constant for one minute) and the time base was in
minutes, then the total would increase by ten every
one minute.
Convert Pulse Input to Isolated
4-20 mA Output
One of the most useful applications for the PD8-6300
is to convert the pulse input from the flowmeter into
an isolated 4-20 mA output all the while displaying
flow rate and total on a big bright display as the
following graphic illustrates:
Programming
The meter may either be scaled (SCALE) without
applying an input, calibrated (Cal) by applying an
input, or the K-Factor menu may be used to match the
rate/totalizer with the flowmeter’s k-factor (pulse/unit
of measure).
Most flowmeter manufacturers provide the k-factor
information with the flowmeter. Enter the K-Factor
(Factor) menu and select the decimal point with
highest resolution possible and program the k-factor
value (i.e. pulses/gal). The meter will automatically
calculate the flow rate using the k-factor and the time
base selected.
Gate Function for Slow Pulse Rates
The gate function is used for displaying slow pulse
rates. Using the programmable gate, the meter is able
to display pulse rates as slow as 1 pulse every 999.9
seconds (0.001 Hz). The gate function can also be
used to obtain a steady display reading with a
fluctuating input signal.
Total & Rate Alarms
The ProtEX-MAX can be equipped with four alarms
(relays) that can be set up to activate on the rate or
total. In the case of the rate, the relays can be
programmed to trip on a high or low rate. In the case
of the total, the relays can be programmed to trip
when the total reaches a user-defined set point. A
variety of reset modes are available and the user can
also program time delays and fail-safe operation.
4-20 mA Output for Rate or Total
The 4-20 mA output can be assigned to the rate or
total.
Total Stored in Non-Volatile Memory
Total and Grand Total values, and all programmed
settings are stored in non-volatile memory for a
minimum of ten years if power is lost.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
12
Total Reset Capabilities
The user may reset the total via a SafeTouch button,
the F4 terminal at the back of the meter, an external
contact closure on the digital inputs, automatically via
user selectable preset value and time delay, or
through serial communications.
Total Reset via SafeTouch Button
The three through-glass SafeTouch button function
keys can be programmed to reset the total and grand
total. This makes it possible for the user to reset either
the total or the grand total without opening the enclosure
cover and without the need for external devices. Of
course, if the total or grand total is password protected,
they will not reset when the function key is pressed.
Total Reset via F4 Terminal
The PD8-6300 includes a digital input (referred to as
the F4 terminal) located on the back of the electronics
module as standard that can be used to reset the total
or grand total, among other things. This is the preferred
method for externally resetting the total or grand total
because it does not interfere with the operation of the
SafeTouch buttons for programming as described
below in the Total Reset via Digital Input section.
Total Reset via Digital Input
In addition to the F4 digital input described above, the
PD8-6300 also includes four digital inputs that can be
used to reset the total or grand total. However, if a
digital input is used to reset the total, or for some
other purpose, the corresponding through-glass
SafeTouch button will function as a programming key.
Total Reset via Preset Value
The total and grand total can be programmed for
automatic reset based on a preset value determined
by the user. In the automatic reset mode, a
programmable time delay is available to reset the total
or grand total after the assigned preset is reached.
Total Reset via Serial
Communications
The total and grand total can be reset via serial
communications such as a Modbus command or
MeterView Pro.
Sampling Function
(Total Triggered Timed Relay)
The sampling function allows the operator to set a set
point for a “sampling” relay. When the program total
reaches that set point, it will close that relay’s
contacts for a preset period of time (0.1 to 5999.9
seconds). An example of its use may be for
wastewater sampling. When the wastewater total
reaches a preset total interval (i.e. every 10,000
gallons), the relay contacts would close for a preset
time, and by some means (light, horn, etc.) alert
someone to take a sample, or provide the trigger to
automatically take a sample of the wastewater.
The utility of this function can, of course, be expanded
beyond sampling and be used whenever a timed relay
output closure is required when the rate or a total
interval reaches a certain set point.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
13
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.
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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
14
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 PD8-6300 in every regard except for the signal input
connector. See Signal Connections on page 27 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

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
15
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
Rate: 10/sec to 1/100 sec (it is a function
of Low Gate setting)
Total: 10/second (fixed)
LED Status
Indicators
See LED Status Indicators on page 31 for
details.
Overrange
Display flashes 999999
Display
Assignment
Display Line 1: Rate, total, grand total,
alternate (rate/total, rate/grand total,
rate/units, total/units, and grand total/units),
set points, max/min, Modbus input and
more.
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.
Recalibration
All ranges are calibrated at the factory to
read frequency in Hz. No recalibration
required.
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).
Password
Three programmable passwords restrict
modification of programmed settings and
two prevent resetting the totals.
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.
Total: Prevents resetting the total manually
Gtotal: Prevents resetting the grand total
manually
Non-Volatile
Memory
Total and Grand Total values, and 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
Isolation
4 kV input/output-to-power line
500 V input-to-output or output-to-P+ 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 powerdissipationlimited to 15.1W
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 21 for additional details.
Pipe Mounting:
Optional pipe mounting kit (PDA6848)
allows for pipe mounting. Sold separately.
See Pipe Mounting Instructions on page 22
for additional details.
Tightening
Torque
Screw terminal connectors:
5 lb-in (0.56 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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
16
Pulse Inputs
Inputs
Field selectable: Pulse or square wave
0-5 V, 0-12 V, or 0-24 V @ 30 kHz;
TTL; open collector 4.7 kpull-up to
5 V @ 30 kHz; NPN or PNP transistor,
switch contact 4.7 kpull-up to
5 V @ 40 Hz; Modbus PV (Slave)
Isolated
Flowmeter
Power Supply
Terminals P+ & P-: 24 VDC 10%.
All models flowmeter supply rated
@ 25 mA max.
All models selectable for 24, 10, or 5 VDC
supply (Internal J4 jumper).
Low Voltage
Mag Pickup
(Isolated)
Sensitivity: 40 mVp-p to 8Vp-p
Minimum
Input
Frequency
0.001 Hz
Minimum frequency is dependent on high
gate setting.
Maximum
Input
Frequency
30,000 Hz
(10,000 for low voltage mag pickup)
Input
Impedance
Pulse input: Greater than 300 k@ 1 kHz.
Open collector/switch input: 4.7 kpull-up
to 5 V.
Input
Threshold
Low
High
1.6 V
3.3 V
Accuracy
±0.03% of calibrated span ±1 count
Temperature
Drift
Rate display is not affected by changes in
temperature.
Multi-Point
Linearization
2 to 32 points
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
May be calibrated using K-factor, internal
calibration, or by applying an external
calibration signal.
K-Factor
Field programmable K-factor converts input
pulses to rate in engineering units. May be
programmed from 0.00001 to 999,999
pulses/unit.
Calibration
Range
Input 1 signal may be set anywhere in the
range of the meter; input 2 signal may be set
anywhere above or below input 1 setting.
Minimum input span between any two
inputs is 0.10 Hz.
An error message will appear if the input 1
and input 2 signals are too close together.
Filter
Programmable contact de-bounce filter:
40 to 999 Hz maximum input frequency
allowed with low speed filter.
Time Base
Second, minute, hour, or day
Gate
Low gate: 0.1-99.9 seconds
High gate: 2.0-999.9 seconds
Rate/Totalizer
Display
Assignment
Display lines 1 & 2 may be assigned to
rate, total, grand total, alternate rate/total,
alternate rate/grand total, set points,
alternate rate/units, alternate total/units,
alternate grand total/units, display Hi,
display Lo, display Hi/Lo, display Modbus,
display units (line 2) and display off (line 2).
Rate Display
Indication
-99999 to 999999, lead zero blanking.
“R” LED illuminates while displaying rate or
frequency.
Total Display
& Total
Overflow
0 to 999,999; automatic lead zero blanking.
“T” LED is illuminated while displaying total
or grand total.
Up to 999,999,999 with total-overflow
feature. “oF” is displayed to the left of total
overflow and ▲ LED is illuminated.
Alternating
Display
Either display may be programmed to
alternate between rate and total or rate and
grand total every 10 seconds.
Total
Decimal Point
Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd
Total decimal point is independent of rate
decimal point.
Totalizer
Calculates total based on rate and field
programmable multiplier to display total in
engineering units. Time base must be
selected according to the time units in
which the rate is displayed.
Totalizer
Rollover
Totalizer rolls over when display exceeds
999,999,999. Relay status reflects display.
Total
Overflow
Override
Program total reset for automatic with 0.1
second delay and set point 1 for 999,999
Totalizer
Presets
Four, user selectable under setup menu.
Any set point can be assigned to total and
may be programmed anywhere in the
range of the meter for total alarm
indication.
Programmable
Delay
On Release
0.1 and 999.9 seconds; applied to the first
relay assigned to total or grand total.
If the meter is programmed to reset total to
zero automatically when the preset is
reached, then a delay will occur before the
total is reset.
Total Reset
Via front panel button, external contact
closure on digital inputs, automatically via
user selectable preset value and time
delay, or through serial communications.
Total Reset
Password
Total and grand total passwords may be
entered to prevent resetting the total or
grand total from the front panel.
Non-
Resettable
Total
The grand total can be programmed as a
non-resettable total by entering the
password “050873”.
Non-Volatile
Memory
Total and Grand Total values, and all
programmed settings are stored in
non-volatile memory for a minimum of ten
years if power is lost.
•Once the Grand Total has been programmed as
“non-resettable” the feature CANNOT be
disabled.
3.3 V
1.6 V
0 V

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
17
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 28 for details.
Relay
Assignment
Relays may be assigned to rate, total,
grand total, 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, automatically via user
selectable preset value and time delay, 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.
Isolated 4-20 mA Transmitter
Output
Output
Source
Rate/process, total, grand total, max, min,
set points 1-4, or manual control mode
Scaling
Range
1.000 to 23.000 mA for any display range.
Calibration
Factory calibrated:
0.0 to 1000.0 = 4-20 mA output
Analog Out
Programming
23.000 mA maximum for all parameters:
Overrange, underrange, max, min, and
break
Accuracy
±0.1% FS ±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
Isolated
Transmitter
Power Supply
Terminals I+ & R: 24 VDC 10%.
Used to power the 4-20 mA output.
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 

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
18
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-MAXModbus Register Tables
located at www.predig.com for details.
Digital Input (F4)
Function
Reset total, 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
Digital Inputs & Outputs
Function
Terminals provided for remote operation of
all four programming / operation buttons.
Other uses include acknowledge/reset
relays and reset max/min values. See
Function Keys & Digital I/O Available
Settings on page 54 for a complete list of
capabilities.
Channels
4 digital inputs & 4 digital outputs
Digital Input
Logic High
3 to 5 VDC
Digital Input
Logic Low
0 to 1.25 VDC
Digital Output
Logic High
3.1 to 3.3 VDC
Digital Output
Logic Low
0 to 0.4 VDC
Source
Current
10 mA maximum output current
Sink Current
1.5 mA minimum input current
+5 V Terminal
To be used as pull-up for digital inputs only.
Connect normally open push buttons
across +5 V & DI 1-4.
•DO NOT use +5 V terminal to power external
devices.
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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
19
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)
Power-
Frequency
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
FM
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.

PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
20
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.