PRECISION DIGITAL ProtEX-MAX PD8-6001 Series User manual

ProtEX-MAX PD8-6001 Explosion-Proof
Feet & Inches Meter Instruction Manual
www.predig.com
Process
•0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs
•Feet & Inches Display Ideal for Level Applications
•Isolated 24 VDC @ 25 mA Transmitter Power Supply
•Multi-Pump Alternation Control
•Display a Single Input in Two Different Scales (e.g. Height & Volume)
•Signal Input Conditioning for Oddly Shaped and Round Horizontal Tanks
•32-Point, Square Root, or Exponential Linearization
•Modern, Sleek and Practical Enclosure
•Display Mountable at 0°, 90°, 180°, & 270° Degrees
•Explosion-Proof, IP68, NEMA 4X Enclosure
•SafeTouch®Through-Glass Button Programming
•Flanges for Wall or Pipe Mounting
•Superluminous Sunlight Readable Display
•Free USB Programming Software & Cable
•4 Relays + Isolated 4-20 mA Output Option
USB Install
O
Or rd de er r f fr ro om m: :
C
C A A B Br ri ig gg gs s C Co om mp pa an ny y
622 Mary Street; Suite 101; Warminster, PA 18974
Phone: [phone] - Fax: [phone]
[e-mail] - www.cabriggs.com

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
2
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.
CAUTION: Read complete
instructions prior to installation
and operation of the meter.
WARNING: Risk of electric
shock or personal injury.
Warning!
•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 instrument cover in explosive environments when the
circuit is live.
•Cover must be fully engaged to meet flameproof/explosion-proof
requirements.
•Information in this manual supersedes all enclosure, compliance, and
agency approval information included in additional product manuals
included with this product.
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.
Registered Trademarks
MeterView®Pro is a registered trademark of Precision Digital Corporation. Modbus®is a
Registered Trademark of Schneider Automation Inc. All other trademarks mentioned in
this document are the property of their respective owners.
© 2018 Precision Digital Corporation. All rights reserved.
www.predig.com
!

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Table of Contents
Table of Contents-------------------------------------------3
Table of Figures---------------------------------------------4
Introduction --------------------------------------------------4
Ordering Information --------------------------------------5
Specifications------------------------------------------------5
General------------------------------------------------------------- 5
Process Input---------------------------------------------------- 6
Relays -------------------------------------------------------------- 6
Isolated 4-20 mA Transmitter Output-------------------- 7
Serial Communications--------------------------------------- 7
Digital Inputs & Outputs-------------------------------------- 7
MeterView Pro --------------------------------------------------- 7
Product Ratings and Approvals;-------------------------- 8
Compliance Information----------------------------------9
Safety--------------------------------------------------------------- 9
Electromagnetic Compatibility----------------------------- 9
Safety Information----------------------------------------10
Installation --------------------------------------------------10
Unpacking------------------------------------------------------- 10
Pre-Installed Conduit/Stopping Plug------------------- 11
Mounting -------------------------------------------------------- 11
Cover Jam Screw--------------------------------------------- 11
Transmitter Supply Voltage Selection (P+, P-) ----- 11
Connections---------------------------------------------------- 12
Required & Factory Wired Connection---------------- 12
Connectors Labeling--------------------------------------- 13
Power Connections ---------------------------------------- 13
Signal Connections ---------------------------------------- 14
Serial Communications Connections------------------ 15
Three Wire Connections ------------------------------ 15
Using PROVU Serial Adapters---------------------------- 17
Relay Connections ----------------------------------------- 18
Switching Inductive Loads-------------------------------- 18
F4 Digital Input Connections----------------------------- 19
4-20 mA Output Connections---------------------------- 19
Analog Output Transmitter Power Supply------------ 19
Interlock Relay Feature ----------------------------------- 19
Digital I/O Connections------------------------------------ 20
External Switch Contacts--------------------------------- 20
Setup and Programming -------------------------------21
Overview--------------------------------------------------------- 21
SafeTouch®Buttons----------------------------------------- 21
Front Panel Buttons and Status LED Indicators--- 22
MeterView®Pro Software ---------------------------------- 23
MeterView Pro Installation ------------------------------- 23
Display Functions & Messages-------------------------- 24
Main Menu ------------------------------------------------------ 26
Setting Numeric Values ------------------------------------ 26
Setting Up the Meter (setup)------------------------------ 27
Setting the Input Signal (Input) ------------------------ 27
Setting the Input Units or Custom Tags (units)---- 28
Setting the Decimal Point (dEc pt)-------------------- 28
Programming the Meter (prog) ------------------------- 29
Program Menu for Single Scale Process --------- 29
Program Menu for Dual-Scale Level Applications
--------------------------------------------------------- 29
Multi-Point Calibration & Scaling-------------------- 29
Scaling the Meter (SCALE)----------------------------- 30
Dual-Scale for Level Application -------------------- 30
Calibrating the Meter with External Source (Cal)31
Setting the Display Parameter & Intensity (dsplay)32
Setting the Relay Operation (relay)-------------------- 33
Setting the Relay Action----------------------------------- 33
Programming Set and Reset Points-------------------- 33
Setting Fail-Safe Operation ------------------------------ 34
Programming Time Delay--------------------------------- 34
Relay Action for Loss of 4-20 mA Input (Loop Break)
------------------------------------------------------------------- 34
Relay and Alarm Operation Diagrams ----------------- 34
High Alarm Operation (Set > Reset)------------------- 34
Low Alarm Operation (Set < Reset)-------------------- 34
High Alarm with Fail-Safe Operation (Set > Reset) 35
Low Alarm with Fail-Safe Operation (Set < Reset)- 35
Pump Alternation Control Operation------------------- 36
Relay Sampling Operation-------------------------------- 36
Signal Loss or Loop Break Relay Operation--------- 37
Time Delay Operation ------------------------------------- 37
Relay Operation Details------------------------------------- 38
Overview------------------------------------------------------ 38
Relays Auto Initialization---------------------------------- 38
Fail-Safe Operation----------------------------------------- 38
Front Panel LEDs------------------------------------------- 38
Latching and Non-Latching Relay Operation -------- 39
Non-Latching Relay (Auto)------------------------------- 39
Non-Latching Relay (A-man) -------------------------- 39
Latching Relay (LatcH)------------------------------------ 39
Latching Relay (Lt-Clr)---------------------------------- 39
Acknowledging Relays ------------------------------------ 40
Pump Alternation Control Applications (Altern) --- 40
Setting Up the Interlock Relay (Force On) Feature 42
Scaling the 4-20 mA Analog Output (Aout)----------- 42
Reset Menu (reset) ------------------------------------------ 43
Control Menu (Contrl) -------------------------------------- 43
Setting Up the Password (pass) ------------------------- 43
Protecting or Locking the Meter------------------------- 43
Making Changes to a Password Protected Meter-- 44
Disabling Password Protection-------------------------- 44
Advanced Features Menu---------------------------------- 45
Advanced Features Menu & Display Messages ---- 45
Noise Filter (filter)--------------------------------------- 47
Noise Filter Bypass (bypass)---------------------------- 47
Rounding Feature (round)-------------------------------- 47
Modbus RTU Serial Communications (serial)----- 47
Serial Communications Overview ---------------------- 48
Select Menu (SElect) ------------------------------------- 49
Signal Input Conditioning (Functn) -------------------- 49
Low-Flow Cutoff (CutofF) -------------------------------- 51
Analog Output Programming (AoutPr)---------------- 51
Programmable Function Keys User Menu (user) -- 51
Internal Source Calibration (ICAL)---------------------- 53
Meter Operation-------------------------------------------54
Front Panel Buttons Operation--------------------------- 54
SafeTouch®Buttons ----------------------------------------- 54

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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F4 Operation --------------------------------------------------- 55
Maximum/Minimum Readings---------------------------- 55
Troubleshooting ------------------------------------------56
Diagnostics Menu (diag)----------------------------------- 56
Determining Software Version -------------------------- 56
Reset Meter to Factory Defaults------------------------- 56
Factory Defaults & User Settings----------------------- 57
Troubleshooting Tips---------------------------------------- 58
Service -------------------------------------------------------59
Mounting Dimensions-----------------------------------59
EU Declaration of Conformity ------------------------61
Table of Figures
Figure 1. Transmitter Supply Voltage Selection .........11
Figure 2: Integrated ProVu Required Connections.....12
Figure 3. Connector Labeling for Fully Loaded PD6001
.................................................................................13
Figure 4. Power Connections .......................................13
Figure 5. Transmitters Powered by Internal Supply...14
Figure 6. Transmitter Powered by Ext. Supply or Self-
Powered..................................................................14
Figure 7. Voltage Input Connections ...........................14
Figure 8: ProtEX-MAX Connections to a Serial
Converter................................................................15
Figure 9. Three-Wire RS485 Connection .....................15
Figure 10: RS-485 Wiring..............................................16
Figure 11: RS-485 Two-Wire Multi-Drop Wiring ..........17
Figure 12. Relay Connections ......................................18
Figure 13. AC and DC Loads Protection......................18
Figure 14. Low Voltage DC Loads Protection.............18
Figure 15. F4 Digital Input Connections......................19
Figure 16. 4-20 mA Output Connections .....................19
Figure 17. Interlock Connections.................................19
Figure 18: Digital I/O Connections...............................20
Figure 19. Acknowledge Relays w/Function Key or
Digital Input............................................................40
Figure 20: General Four-Wire Network Connection ...48
Figure 21: General Two-Wire Network Connection ....48
Figure 22: Enclosure Dimensions –Front View..........59
Figure 23: Enclosure Dimensions –Side Cross Section
View ........................................................................59
Introduction
The ProtEX-MAX PD8-6001 explosion-proof feet & inches meter offers all the functionality of the
ProVu PD6001 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. Its
superluminous LED digits make it easily readable in smoke, dust, fog, and, with the optional
SunBright® display, even direct sunlight. It accepts a process current (4-20 mA) or process
voltage (0-5V, 1-5V, etc.) signal and displays it on a dual-line, 6-digit SunBright®sunlight
readable display. t is ideal for level applications requiring an easy-to-understand display, as it
shows feet, inches, and fractions of an inch.
The meter includes a 24 VDC power supply to drive the transmitter and can be equipped with
up to four internal relays and a 4-20 mA output. The PD8-6001 can be programmed and
operated without opening the housing by using the built-in SafeTouch®through-glass buttons or
the RS485 serial communication port with free Modbus®protocol.
The analog input can be scaled to display the process in two different scales. The main display
can indicate level in feet and inches with printed feet and inches designations, and the second
display could be used to indicate some other scale, such as the volume in gallons or liters.
The basic model includes an isolated 24 VDC transmitter power supply that can be used to
power the input transmitter or other devices. An additional isolated 24 VDC power supply is
included with the 4-20 mA output option. A digital input is standard.
A fully loaded PD6001 meter has the following: four SPDT relays, 4-20 mA output, and two 24
VDC power supplies. The 4-20 mA isolated output, Modbus RTU serial communications, and
digital I/O make the PD8-6001 an excellent addition to any hazardous area level monitoring or
control system.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Ordering Information
SunBright Display Models
85-265 VAC Model
12-24 VDC Model
Options Installed
PD8-6001-6H0
PD8-6001-7H0
No options
PD8-6001-6H7
PD8-6001-7H7
4 relays & 4-20 mA output
*Model number for replacement option card.
WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Accessories
Model
Description
PDA1232
RS-232 serial adapter
PDA1485
RS-485 serial adapter
PDA7485-I
RS-232 to RS-422/485 isolated converter
PDA8232-N
USB to RS-232 non-isolated converter
PDA8485-I
USB to RS-422/485 isolated converter
PDX6901
Suppressor (snubber): 0.01 µF/470 , 250 VAC
Specifications
Except where noted all specifications apply to operation at +25°C.
General
Display
Line 1: 0.60" (15 mm) high, red LEDs
separated by feet and inches
designations
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
Display
Update Rate
5/second (200 ms)
Overrange
Display flashes 999999
Underrange
Display flashes -99999
Display
Assignment
Display lines 1 & 2 may be assigned to
PV1, PV2, PCT, max/min, max & min,
set points, units (line 2 only), or Modbus
input.
Programming
Methods
Four front panel buttons, digital inputs, PC
and MeterViewPro software, or Modbus
registers.
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.
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.
Power
Options
85-265 VAC 50/60 Hz, 90-265 VDC, 20
W max or 12-24 VDC 10%, 15W max
Powered over USB for configuration
only.
Isolated
Transmitter
Power Supply
TerminalsP+&P-: 24VDC10%.
selectable for24, 10, or5 VDC output
supply(internal jumperJ4). Allmodels
transmitter supplyrated@25mAmax.
Non-Volatile
Memory
All programmed settings are stored in
non-volatile memory for a minimum of
ten years if power is lost.
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:
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

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
6
Max Power
Dissipation
Maximum power dissipation limited to
15.1 W.
Connections
Screw terminals accept 12 to 22 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
Four slotted flanges for wall mounting
or NPS 1½" to 2½" or DN 40 to 65 mm
pipe mounting. See Mounting
Dimensions on page 59.
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)
Approximate
Shipping Weight
16.0 lbs (7.26 kg)
Warranty
3 years parts & labor
Process Input
Inputs
Field selectable:
0-20, 4-20 mA, 10 V (0-5, 1-5, 0-10 V),
Modbus PV (Slave)
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
Signal Input
Conditioning
Linear or round horizontal tank volume
calculation
Multi-Point
Linearization
2 to 32 points for PV or PV1
2 to 8 points for PV2 (Dual-scale Level
feature)
Round H Tank
Diameter & Length: 999.999 inch or cm
calculates volume in gallons or liters
respectively.
Low-Flow
Cutoff
0FT0IN(0/16 or 0/8) - 99FT11IN(15/16 or 7/8)
(0FT0IN(0/16 or 0/8) disables cutoff function)
Decimal Point
Up to five decimal places or none (PV2
only):
d.ddddd, d.dddd, d.ddd, d.dd, d.d,
or dddddd
Calibration
Range
Input
Range
Minimum Span
Input 1 & Input 2
4-20 mA
0.15 mA
10 V
0.01 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
resettable fuse impedance)
Input
Overload
Current input protected by resettable
fuse, 30 VDC max.
Fuse resets automatically after fault is
removed.
F4 Digital Input
Contacts
3.3 VDC on contact. Connect normally
open contacts across F4 to COM.
F4 Digital Input
Logic Levels
Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC
HART
Transparency
Analog input will not interfere with
existing HART communications on the
wired 4-20 mA signal
Relays
Rating
4 SPDT (Form C) internal and/or 4
SPST (Form A) external; 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 page 18 for details.
Deadband
0-100% of span, user programmable
High Or Low
Alarm
User may program any alarm for high or
low trip point.
Unused alarm LEDs and relays may be
disabled (turn off).
Relay
Operation
Automatic (non-latching) and/or manual
reset
Latching (requires manual acknowledge)
with/without clear
Pump alternation control (2 to 4 relays)
Sampling (based on time)
Off (disable unused relays and enable
Interlock feature)
Manual on/off control mode
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.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
7
Relay Reset
User selectable via front panel buttons
or digital inputs
1. Automatic reset only (non-latching),
when the input passes the reset
point.
2. Automatic +manual reset at anytime
(non-latching)
3. Manual reset only, at any time
(latching)
4. Manual reset only after alarm
condition has cleared (latching)
Note: Front panel button or digital input
may be assigned to acknowledge
relays programmed for manual
reset.
Isolated 4-20 mA Transmitter Output
Output Source
Process variable (PV), max, min, set
points 1-8, 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: 24VDC 10%.May be
used to power the 4-20 mA output or
other devices. Refer to Figure 16 on page
19. Allmodels @25mAmax.
External Loop
Power Supply
35 VDC maximum
Output Loop
Resistance
Power
supply
Minimum
Maximum
24 VDC
10 
700 
35 VDC
(external)
100 
1200 
Serial Communications
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
StatusIndication
Separate LEDs for Power (P), Transmit
(TX), and Receive (RX)
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 PROVU®Modbus Register Tables located
at www.predig.com for details.
Digital Inputs & Outputs
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 pushbuttons
across +5 V & DI 1-4.
WARNING
DO NOT use +5 V
terminal (pin 1) to power
external devices.
Function
Assignment
The on-board digital inputs (1-4) are
designed to mimic the behavior of the
front panel buttons (Menu, F1, F2, &
F3).
If you wish to change their behavior, re-
assign F1-F3 to the desired function,
then change the corresponding digital
input to match.
MeterView Pro
System
Requirements
Microsoft®Windows®XP/Vista/7/8/10
Communications
USB 2.0 (Standard USB A to Micro USB
B)
Configuration
Configure device settings one at a time

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
8
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 & IP66
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.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
9
Compliance Information
Safety
UL & c-UL Listed
USA & Canada
UL 508 Industrial Control Equipment
UL File Number
E160849
Front Panel
UL Type 4X, NEMA 4X, IP65; panel gasket provided
Low Voltage
Directive
EN 61010-1:2010
Safety requirements for measurement, control, and laboratory use
Electromagnetic Compatibility
Emissions
EN 55022:2010
Class A ITE emissions requirements
Radiated
Emissions
Class A
AC Mains Conducted
Emissions
Class A
Immunity
EN 61326-1:2013
Measurement, control, and laboratory equipment
EN 61000-6-2:2005
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 PD6000 meters installed through the covers of grounded metal enclosures
with cable shields grounded at the point of entry representing installations designed to optimize EMC
performance.
Declaration of Conformity available at www.predig.com

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
10
Safety Information
WARNINGS
•Read complete instructions prior to installation and operation of the instrument.
•Installation and service should be performed only by trained service personnel. Service
requiring replacement of internal sub-components must be performed at the factory.
•Disconnect from supply before opening enclosure. Keep cover tight while circuits are alive.
Conduit seals must be installed within 18" (450mm) of the enclosure or within 2" (50mm) for
Zone installations.
•Verify that the operating atmosphere of the instrument is consistent with the appropriate
hazardous locations certifications.
•If the instrument is installed in a high voltage environment and a fault or installation error
occurs, high voltage may be present on any lead
•Read all product labels completely and follow all instructions and requirements listed on the
labels for installation or service.
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.
WARNING
Disconnect from supply before opening enclosure. Keep
cover tight while circuits are alive. 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 instrument from packing box. Inspect the packaging and contents for damage. Report
damages, if any, to the carrier.
If any part is missing or the instrument malfunctions, please contact your supplier or the factory for
assistance.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
11
Pre-Installed Conduit/Stopping Plug
The PD8-6000 is supplied with two pre-installed conduit plugs for installations that do not require the use
of all conduit entries. The conduit/stopping plugs include an internal 12mm hexagonal socket recess for
removal. The pre-installed plugs and their installation are included in the hazardous area approvals for
the PD8 Series enclosure.
WARNING
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.
Mounting
The ProtEX-MAX has four slotted mounting flanges that should be used for pipe mounting or wall
mounting. Refer to Mounting Dimensions, page 59 for details.
WARNING
Do not attempt to loosen or remove flange bolts
while the instrument is in service.
Cover Jam Screw
The cover jam screw should be properly installed once the instrument has been wired and tested in a
safe environment. The cover jam screw is intended to prevent the removal of the instrument cover in a
flameproof environment without the use of tools. Using a M2 hex wrench, turn the screw clockwise until
the screw contacts the aluminum enclosure. Turn the screw an additional 1/4 to 1/2 turn to secure the
cover. Caution: Excess torque may damage the threads and/or wrench.
Transmitter Supply Voltage Selection (P+, P-)
All meters, including models equipped with the 12-24 VDC power option, are shipped from the factory
configured to provide 24 VDC power for the transmitter or sensor.
If the transmitter requires 5 or 10 VDC excitation, the internal jumper J4 must be configured
accordingly.
To access the voltage selection jumper:
1. Remove all the wiring connectors.
2. Unscrew the back cover.
3. Slide out the back cover by about 1 inch.
4. Configure the J4 jumper, located behind the input signal connector, for the desired excitation
voltage as shown.
Figure 1. Transmitter Supply Voltage Selection

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12
Connections
WARNINGS
•Static electricity can damage sensitive components.
•Observe safe handling precautions for static-sensitive components.
•Use proper grounding procedures/codes.
•If the instrument is installed in a high voltage environment and a
fault or installation error occurs, high voltage may be present on
any lead or terminal.
•Follow all fusing and wiring precautions requirements for the
instrument integrated to the PD8 Series model number being
connected.
To access the connectors, remove the enclosure cover and unscrew the two captive screws that fasten
the electronics module. Signal connections are made to de-pluggable connectors on the back of the
electronics module.
Some connectors may be provided already connected. These connections are required for proper
operation of the ProtEX-MAX, and should not be removed unless instructed to by this manual.
Wires marked as being used for testing purposes should be removed.
Grounding connections are made to the two ground screws provided on the base –one internal and one
external.
After all connections have been completed and verified, apply power to the unit.
Required & Factory Wired Connection
The ProtEX-MAX comes with a pre-wired connection. This connection is detailed below, and must be
maintained in order for the instrument to function properly.
WARNING
Observe all safety regulations. Electrical wiring should be performed
in accordance with all agency requirements and applicable national,
state, and local codes to prevent damage to the meter and ensure
personnel safety.
Figure 2: Integrated ProVu Required Connections

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Connectors Labeling
The connectors’ label, affixed to the meter, shows the location of all connectors available with requested
configuration.
Warning!
Do not disconnect the RJ45 M-LINK connector cable.
Otherwise the instrument will not function properly.
Figure 3. Connector Labeling for Fully Loaded PD6001
Power Connections
Power connections are made to a two-terminal connector labeled POWER on Figure 3 on page 13. The
meter will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring
convention.
Figure 4. Power Connections
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+-

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Signal Connections
Signal connections are made to a six-terminal connector labeled
SIGNAL on Figure 3. The COM (common) terminal is the return for the 4-20 mA and the 10 V input
signals.
Current and Voltage Connections
The following figures show examples of current and voltage connections.
There are no switches or jumpers to set up for current and voltage inputs. Setup and programming is
performed through the front panel buttons.
Figure 5. Transmitters Powered by Internal Supply
Figure 6. Transmitter Powered by Ext. Supply or Self-Powered
The current input is protected against current overload by a resettable fuse. The display may or may not
show a fault condition depending on the nature of the overload.
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.
Figure 7. Voltage Input Connections
The meter is capable of accepting any voltage from -10 VDC to +10 VDC.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Serial Communications Connections
The ProtEX-MAX has a 5 position terminal block for connecting RS-485 serial devices.
Figure 8 details the wiring connections from the ProtEX-MAX to an RS-485 serial converter (such as the
PDA7485 or PDA8485) for a four-wire network.
ProtEX-MAX to RS-485
Serial Converter Connections
RS-485 Serial
Converter
ProtEX-MAX RS-
485 Connections
DO
DI
DO
DI
DI
DO
DI
DO
Figure 8: ProtEX-MAX Connections to a Serial Converter
The ProtEX-MAX has three diagnostic LEDs: a Power (P) LED to show when the module is powered
properly, a Transmit Data (TX) LED to show when the module is being transmitted to by the PC side, and
a Receive Data (RX) LED to show when the module is sending data to a receiving device.
The following diagrams detail how to connect the RS-485 serial communications from the ProtEX-MAX to
a RS-485/RS-232 serial converter (PDA7485) in four wire and two wire configurations.
Three Wire Connections
In order to wire the 5 pins for use as a 3-wire half-duplex RS-485 connection, it is necessary to create a
jumper connection between DI –DO and DI- –DO- as shown below.
Figure 9. Three-Wire RS485 Connection
F4 COM DI DI DO DO
TX
RX 1 2 3 4 51 2

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
16
Figure 10: RS-485 Wiring
Notes:
1. Termination resistors are optional and values depend on the cable length and characteristic
impedance. Consult the cable manufacturer for recommendations.
2. Refer to RS-232 to RS-485 Converter documentation for further details.
3. Use shielded cable, twisted-pairs plus ground. Connect ground shield only at one location.
WARNING
Observe all safety regulations. Electrical wiring should be performed
in accordance with all agency requirements and applicable national,
state, and local codes to prevent damage to the meter and ensure
personnel safety.

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Figure 11: RS-485 Two-Wire Multi-Drop Wiring
Notes:
1. Termination resistors are optional and values depend on the cable length and characteristic
impedance. Consult the cable manufacturer for recommendations.
2. Refer to RS-232 to RS-485 Converter documentation for further details.
3. Use shielded cable, twisted-pair plus ground. Connect ground shield only at one location.
WARNING
Observe all safety regulations. Electrical wiring should be performed
in accordance with all agency requirements and applicable national,
state, and local codes to prevent damage to the meter and ensure
personnel safety.
When using more than one instrument in a multi-drop or multi-point mode, each meter must be provided
with its own unique address. See Modbus RTU Serial Communications on page 47.
Using PROVU Serial Adapters
NOTICE
PROVUexpansion modules and serial adapters are not included in
the hazardous area approvals of the ProtEX-MAX. The PDA1232
may be used only while the ProtEX-MAX is in a safe area, and will
disable some features while installed.
PROVU expansion modules and serial adapters are not recommended for use with the ProtEX-MAX. It is
recommended that any serial protocol conversion required on the RS-485 communications connection be
performed using a PDA7485 RS-232 to RS-485 or PDA8485 USB to RS-485 serial converter located in a
safe area.
!

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Relay Connections
Relay connections are made to two six-terminal connectors labeled RELAY1 –RELAY4 on Figure 3.
Each relay’s C terminal is common only to the normally open (NO) and normally closed (NC) contacts of
the corresponding relay. The relays’ C terminals should not be confused with the COM (common) terminal
of the INPUT SIGNAL connector.
Figure 12. Relay Connections
Switching Inductive Loads
The use of suppressors (snubbers) is strongly recommended when switching inductive loads to prevent
disrupting the microprocessor’s operation. The suppressors also prolong the life of the relay contacts.
Suppression can be obtained with resistor-capacitor (RC) networks assembled by the user or purchased
as complete assemblies. Refer to the following circuits for RC network assembly and installation:
Figure 13. AC and DC Loads Protection
Choose R and C as follows:
R: 0.5 to 1 Ωfor each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts
Notes:
1. Use capacitors rated for 250 VAC.
2. RC networks may affect load release time of solenoid loads. Check to confirm proper operation.
3. Install the RC network at the
meter's relay screw terminals. An
RC network may also be
installed across the load.
Experiment for best results.
RC Networks Available from Precision Digital
RC networks are available from Precision Digital and should be applied to each relay contact switching an
inductive load. Part number: PDX6901.
Note: Relays are de-rated to 1/14th HP (50 watts) with an inductive load.
CNONO NC NC C
RELAY4 RELAY3
4 36 5 2 1
CNONO NC NC C
RELAY2 RELAY1
4 36 5 2 1
C
R
C
R
Figure 14. Low Voltage DC Loads Protection
Use a diode with a reverse
breakdown voltage two to
three times the circuit
voltage and forward current
at least as large as the load
current.

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F4 Digital Input Connections
A digital input, F4, is standard on the meter. This digital
input is connected with a normally open contact across
F4 and COM, or with an active low signal applied to F4.
4-20 mA Output Connections
Connections for the 4-20 mA transmitter output
are made to the connector terminals labeled MA
OUT. The 4-20 mA output may be powered
internally or from an external power supply.
Analog Output Transmitter Power Supply
The internal 24 VDC power supply powering the analog output may be used to power other devices, if the
analog output is not used. The I+ terminal is the +24 V and the R terminal is the return.
Interlock Relay Feature
As the name implies, the interlock relay feature reassigns one, or more, alarm/control relays for use as
interlock relay(s). Interlock contact(s) are wired to digital input(s) and trigger the interlock relay. This
feature is enabled by configuring the relay, and relative digital input(s) (see page 42). In one example, dry
interlock contacts are connected in series to one
digital input which will be used to force on
(energize) the assigned interlock power relay
when all interlock contacts are closed (safe). The
interlock relay front panel LED flashes when
locked out. The interlock relay would be wired in-
series with the load (N/O contact). See below.
Figure 17. Interlock Connections
Figure 15. F4 Digital Input Connections
Figure 16. 4-20 mA Output Connections
12-35 VDC
Power
Supply
+
4-20 mA
Input Meter
-
+
RI- I+
13 2
RELAY1
3 2 1
24 V
-
4-20 mA Input
Remote Display,
Chart Recorder, Etc.
-
+
RI- I+
MA OUT
13 2
RELAY1
3 2 1
24 V
MA OUT

ProtEX-MAX PD8-6001 Explosion-Proof Feet & Inches Meter Instruction Manual
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Digital I/O Connections
The ProtEX-MAX has a 10 position terminal block for connecting digital inputs and outputs.
Figure 18: Digital I/O Connections
NOTICE
The onboard digital inputs (1-4) are configured at the factory to function
identically to the front panel pushbuttons (Menu, F1, F2, & F3) in order to
work with the SafeTouch buttons. Changing the programming of the digital
inputs will affect the function of the SafeTouch buttons.
If you wish to change the behavior of the digital inputs, re-assign F1-F3 to
the desired function, then change the corresponding digital input to match.
WARNING
Observe all safety regulations. Electrical wiring should be performed in
accordance with all agency requirements and applicable national, state,
and local codes to prevent damage to the meter and ensure personnel
safety.
External Switch Contacts
The ProtEX-MAX includes 4 digital inputs. These digital inputs are preconfigured at the factory to function
as external contacts to duplicate the front button functions of the instrument. The factory configuration
uses the following corresponding digital input terminals for external switch contacts.
Digital
Input
Connection
Factory Default
Function
I1
MENU
I2
RIGHT arrow
I3
UP arrow
I4
ENTER arrow
See Digital Inputs & Outputs in the Specification on page 7 for details on the digital inputs.
NOTICE
The digital inputs are configured at the factory to function
identically to the front panel pushbuttons in order to work with
the SafeTouch buttons. Changing the programming of the
digital inputs will affect the function of the SafeTouch buttons.
1 2 3 4 5 6
+5 I1 I2 I3 I4 O1
7 8
O2 O3
910
O4 G
DI 1-4 DO 1-4
5 VDC GND
!
!