Page 1
ProtEX-MAX PD8-7000 Explosion-Proof
Temperature Meter Instruction Manual
Temperature
USB Install
• Thermocouple: J, K, T, E, R, S, B, N, C
• RTD: 100Ω Pt, 10Ω Cu, 120Ω Ni, 1000Ω Pt inputs
• 1° or 0.1° Resolution
• Displays up to 3300 F
• Averages up to 10 RTD Sensors
• Automatic Cold Junction Compensation
• 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, RS-232, & RS-485 Serial Communication Options
• Input Power Options Include 85-265 VAC or 12-24 VDC
PRECISION DIGITAL CORPORATION
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Page 2
ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Disclaimer
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 applica-
tions 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 in-
jury. 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 require-
ments.
• Information in this manual supersedes all enclosure, compliance, and
agency approval information included in additional product manuals included with this product.
!
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.
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. All other trademarks
mentioned in this document are the property of their respective owners.
© 2018 Precision Digital Corporation. All rights reserved.
2
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Table of Contents
Table of Contents ----------------------------------------- 3
Table of Figures ------------------------------------------- 4
Introduction ------------------------------------------------- 4
Ordering Information ------------------------------------ 5
Specifications ---------------------------------------------- 6
General ------------------------------------------------------------ 6
Temperature Input --------------------------------------------- 7
Relays ------------------------------------------------------------- 7
Isolated 4-20 mA Output ------------------------------------ 8
Serial Communications -------------------------------------- 8
Digital Inputs & Outputs ------------------------------------- 8
MeterView Pro -------------------------------------------------- 8
Product Ratings and Approvals; ------------------------- 9
Compliance Information ------------------------------ 10
Safety ------------------------------------------------------------ 10
Electromagnetic Compatibility -------------------------- 10
Safety Information -------------------------------------- 11
Installation ------------------------------------------------ 11
Unpacking ------------------------------------------------------ 11
Pre-Installed Conduit/Stopping Plug ------------------ 12
Mounting ------------------------------------------------------- 12
Cover Jam Screw -------------------------------------------- 12
Connections --------------------------------------------------- 13
Required & Factory Wired Connection --------------- 13
Connectors Labeling -------------------------------------- 14
Power Connections --------------------------------------- 14
Signal Connections --------------------------------------- 15
Connections for Averaging RTD Sensors ----------- 16
Serial Communications Connections ----------------- 16
Using PROVU Serial Adapters --------------------------- 18
Relay Connections ---------------------------------------- 19
Switching Inductive Loads ------------------------------- 19
F4 Digital Input Connections ---------------------------- 20
4-20 mA Output Connections --------------------------- 20
Power Supply for Analog Output Loop or Other
Uses ---------------------------------------------------------- 20
Interlock Relay Feature ---------------------------------- 20
Digital I/O Connections ----------------------------------- 21
External Switch Contacts -------------------------------- 21
Setup and Programming------------------------------ 22
SafeTouch
Front Buttons and Status LED Indicators ----------- 23
MeterView
MeterView Pro Installation ------------------------------ 24
Display Functions & Messages ------------------------- 25
Main Menu ----------------------------------------------------- 27
Setting Numeric Values ----------------------------------- 27
Setting Up the Meter (setup) ----------------------------- 28
Setting the Input Signal (Input) ----------------------- 29
Selecting the Temperature Scale (F or C) --------- 29
Setting the Decimal Point (dEc pt) ------------------- 29
Setting the Display Parameter & Intensity (dsplay)
----------------------------------------------------------------- 29
Setting the Input Units or Custom Tags (units)--- 30
Setting the Relay Operation (relay) ----------------- 30
®
Buttons ---------------------------------------- 22
®
Pro Software --------------------------------- 24
Setting the Relay Action ---------------------------------- 31
Programming Set and Reset Points ------------------ 31
Setting Fail-Safe Operation ----------------------------- 31
Programming Time Delay ------------------------------- 31
Relay Action for Loss of Input (Input Break) -------- 31
Relay and Alarm Operation Diagrams ---------------- 32
High Alarm Operation (Set > Reset) ------------------ 32
Low Alarm Operation (Set < Reset) ------------------ 32
High Alarm with Fail-Safe Operation (Set > Reset)
----------------------------------------------------------------- 32
Low Alarm with Fail-Safe Operation (Set < Reset) 32
Pump Alternation Control Operation ------------------ 33
Relay Sampling Operation ------------------------------ 33
Signal Loss or Input Break Relay Operation ------- 34
Time Delay Operation ------------------------------------ 34
Relay Operation Details ----------------------------------- 35
Overview ----------------------------------------------------- 35
Relays Auto Initialization -------------------------------- 35
Fail-Safe Operation --------------------------------------- 35
Front Panel LEDs ----------------------------------------- 35
Latching and Non-Latching Relay Operation ------- 36
Non-Latching Relay (Auto) ----------------------------- 36
Non-Latching Relay (A-nman) -------------------------- 36
Latching Relay (LatcH) ---------------------------------- 36
Latching Relay (Lt-Clr) --------------------------------- 36
Acknowledging Relays ----------------------------------- 37
Setting Up the Interlock Relay (Force On) Feature 37
Scaling the 4-20 mA Analog Output (Aout) --------- 38
Reset Menu (reset) ----------------------------------------- 38
Control Menu (Contrl) ------------------------------------- 38
Setting Up the Password (pass) ------------------------ 39
Protecting or Locking the Meter ----------------------- 39
Making Changes to a Password Protected Meter - 39
Disabling Password Protection ------------------------ 39
Advanced Features Menu -------------------------------- 40
Advanced Features Menu & Display Messages --- 40
Offset Adjust (Adjust) ----------------------------------- 41
Recalibration of the Meter (t CAL) -------------------- 42
Noise Filter (filter) ------------------------------------- 43
Noise Filter Bypass (bypass) --------------------------- 43
Rounding Feature (round) ------------------------------ 43
Modbus RTU Serial Communications (serial) --- 43
Serial Communications Overview --------------------- 44
Select Menu (SElect) ------------------------------------ 45
Analog Output Programming (AoutPr) -------------- 45
Programmable Function Keys User Menu (user) - 46
Internal Temperature Calibration (ICAL)------------- 47
Meter Operation ------------------------------------------ 49
Front Buttons Operation ---------------------------------- 49
SafeTouch
F4 Operation -------------------------------------------------- 50
Maximum/Minimum Readings--------------------------- 50
®
Buttons ---------------------------------------- 49
Troubleshooting ----------------------------------------- 51
Diagnostics Menu (diag) ---------------------------------- 51
Determining Software Version ------------------------- 51
Reset Meter to Factory Defaults ------------------------ 51
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Factory Defaults & User Settings ---------------------- 52
Troubleshooting Tips -------------------------------------- 53
Service ----------------------------------------------------- 54
Table of Figures
Mounting Dimensions --------------------------------- 55
EU Declaration of Conformity ----------------------- 57
Figure 1: Integrated ProVu Required Connections .. 13
Figure 2. Connector Labeling for Fully Loaded PD8-
7000 ...................................................................... 14
Figure 3. Power Connections ..................................... 14
Figure 4. Thermocouple Input Connections ............. 15
Figure 5. Three-Wire RTD Input Connections ........... 15
Figure 6. Two-Wire RTD Input Connections ............. 15
Figure 7. Four-Wire RTD Input Connections............. 15
Figure 8. Average Temperature RTD Input
Connections ........................................................ 16
Figure 9: ProtEX-MAX Connections to a Serial
Converter ............................................................. 16
Figure 10. Three-Wire RS485 Connection ................. 16
Figure 11: RS-485 Wiring ............................................ 17
Figure 12: RS-485 Two-Wire Multi-Drop Wiring ........ 18
Figure 13. Relay Connections ..................................... 19
Figure 14. AC and DC Loads Protection .................... 19
Figure 15. Low Voltage DC Loads Protection ........... 19
Figure 16. F4 Digital Input Connections .................... 20
Figure 17. 4-20 mA Output Connections .................... 20
Figure 18. Interlock Connections ............................... 20
Figure 19: Digital I/O Connections ............................. 21
Figure 20. Acknowledge Relays w/Function Key or
Digital Input .......................................................... 37
Figure 21: General Four-Wire Network Connection .. 44
Figure 22: General Two-Wire Network Connection... 44
Figure 23: Enclosure Dimensions – Front View ........ 55
Figure 24: Enclosure Dimensions – Side Cross
Section View ......................................................... 55
Introduction
The ProtEX-MAX PD8-7000 offers all the functionality of the ProVu PD7000 as a fully FM, CSA,
ATEX, and IECEx approved explosion-proof product. It accepts a direct temperature input from a
wide range of temperature measurement devices (type J, K, T, E, R, S, B, N, and C thermocouples
and 100 or 1000 Ω platinum, 10 Ω copper, 120 Ω nickel RTDs). It displays the measured
temperature in either degrees Fahrenheit or degrees Celsius on a dual-line, 6-digit SunBright®
sunlight readable display. The meter includes automatic cold junction compensation for
thermocouples and the ability to average up to ten (10) RTD sensors. The PD8-7000 can be
equipped with up to four internal relays and a 4-20 mA analog output. It 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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Ordering Information
85-265 VAC Model
12-24 VDC Model
Options Installed
PD8-7000-6H0
PD8-7000-7H0
No options
PD8-7000-6H7
PD8-7000-7H7
4 relays & 4-20 mA output
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
SunBright Display Models
Accessories
WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Specifications
Display
Line 1: 0.60" (15 mm) high red LEDs;
Line 2: 0.46" (12 mm) high red LEDs.
Both displays have six characters with
leading zero blanking. Temperature value is
four or five-digit F/C, based on configuration.
Resolution
1 or 0.1 for all thermocouples and RTD
inputs
Display
Intensity
Eight user selectable intensity levels
Display
Update Rate
5/second (200 ms)
Overrange
Display flashes 99999
Underrange
Display flashes -9999
Programming
Methods
Four front panel buttons, digital inputs, PC and
MeterView® Pro 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 cycled.
Password
Three programmable passwords restrict
modification of programmed settings.
Pass 1: Allows use of function keys and
digital inputs
Pass 2: Allows use of function keys, digital
inputs and editing set/reset points
Pass 3: Restricts all programming, function
keys, and digital inputs.
Non-Volatile
Memory
All programmed settings are stored in nonvolatile memory for a minimum of ten years
if power is lost.
Power
Options
85-265 VAC 50/60 Hz, 90-265 VDC, 20 W
max or 12-24 VDC 10%, 15 W max
Powered over USB for configuration only
Fuse
Required external fuse: UL Recognized, 5 A
max, slow blow; up to 6 meters may share
one 5 A fuse
Normal Mode
Rejection
Greater than 60 dB at 50/60 Hz
Isolation
4 kV input/output-to-power line
500 V input-to-output
Overvoltage
Category
Installation Overvoltage Category II:
Local level with smaller transient
overvoltages than Installation Overvoltage
Category III.
Environmental
T6 Class operating temperature range Ta =
-20 to 60°C
T5 Class operating temperature range Ta =
-20 to 65°C
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 55.
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
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
Except where noted all specifications apply to operation at +25°C.
General
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Inputs
Thermocouple: J, K, T, E, R, S, B, N, C;
RTD: 100 Ω platinum (0.00385 & 0.00392
coefficients),
10 Ω copper, 120 Ω nickel, 1000 Ω platinum
(0.00385 & 0.00392 coefficients)
Cold
Junction
Reference
Automatic, fixed, no user calibration needed
Temperature
Drift
2C maximum from 0 to 65C ambient
temperature
4C maximum from -20 to 0C ambient
temperature
Offset
Adjustment
User programmable offset adjust ±50.0
degrees. This parameter allows the user to
apply an offset value to the temperature
being displayed.
Input
Impedance
Greater than 100 k
Sensor Break
Detection
Open TC or RTD sensor indicated by
display flashing oPEn,
relays can be programmed to go “On”, “Off”,
or to “Ignore” (Note: Ignore is detected as an
upscale condition).
Analog output goes to the programmed
sensor break value.
RTD
Averaging
Up to 10 RTDs connected in parallel can be
averaged.
Accuracy & Ranges
Type
Range (°F)
Accuracy
Range (°C)
Accuracy
J
-200 to 2000
±1.8°F
-129 to 1093
±1°C K -200 to 2400
±1.8°F
-129 to 1316
±1°C T -200 to 752
±1.8°F
-129 to 400
±1°C E -200 to 1800
±1.8°F
-129 to 982
±1°C R -50 to 3000
±3.6°F
-46 to 1649
±2°C S -50 to 3000
±3.6°F
-46 to 1649
±2°C B 752 to 3300
±3.6°F
400 to 1816
±2°C N -100 to 2300
±3.6°F
-73 to 1260
±2°C C 32 to 4100
±3.6°F
0 to 2260
±2°C
10
-328 to 500
±0.2°F
-200 to 260
±0.1°C
100
-328 to 1562
±0.7°F
-200 to 850
±0.4°C
120
-110 to 500
±0.2°F
-79 to 260
±0.1°C
1000
-328 to 900
±0.7°F
-200 to 482
±0.4°C
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 19 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)
Latching (requires manual acknowledge)
Sampling (based on time)
Relay alternation control (2 to 4 relays)
Off (disable unused relays and enable
Interlock feature)
Manual on/off control mode
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 any time
(non-latching)
3. Manual reset only, at any time
(latching)
4. Manual reset only after alarm condition
has cleared (L)
Note: Front panel button or digital input may
be assigned to acknowledge relays
programmed for manual reset.
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.
Temperature Input
Relays
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Output
Source
PV (temperature), max, min, set points 1-4,
Modbus PV input, or manual control mode
Scaling
Range
1.000 to 23.000 mA for any display range
Calibration
Factory calibrated 0.0 to 2000.0 = 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 65C ambient,
0.8 µA/C max from -20 to 0C ambient
Note: Analog output drift is separate from input
drift.
Power Supply
For Analog
Output Loop
Or Other
Uses
Terminals I+ & R: 24 VDC 10%. May be used
to power the 4-20 mA output or other
devices. Refer to Figure 6 on page 14 and
Figure 17 on page 20.
All models @ 25 mA max.
External
Loop Power
Supply
35 VDC maximum
Output Loop
Resistance
Power supply
Minimum
Maximum
24 VDC
10
700
35 VDC
(external)
100
1200
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status
Indication
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 to 2.54 sec
Turn Around
Delay
Less than 2 ms (fixed)
Note: Refer to the PROVU® Modbus Register Tables located
at www.predig.com for details.
Channels
4 digital inputs & 4 digital outputs per
module
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, reassign F1-F3 to the desired function,
then change the corresponding digital
input to match.
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
Isolated 4-20 mA Output
Digital Inputs & Outputs
Serial Communications
MeterView Pro
8
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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
Product Ratings and Approvals;
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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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
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
Compliance Information
Safety
Electromagnetic Compatibility
Note:
Testing was conducted on PD8-7000 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
10
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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.
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.
Safety Information
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.
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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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.
WARNING
Do not attempt to loosen or remove flange bolts
while the instrument is in service.
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.
Mounting
The ProtEX-MAX has four slotted mounting flanges that should be used for pipe mounting or wall mounting. Refer to Mounting Dimensions, page 55 for details.
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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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 in-
strument integrated to the PD8 Series model number being connected.
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.
Connections
To access the connectors, remove the enclosure cover and unscrew the two captive screws that fasten
the electronics module. Signal connections are made to de-pluggable connectors on the back of the electronics module.
Some connectors may be provided already connected. These connections are required for proper operation of the ProtEX-MAX and should not be removed unless instructed to by this manual.
Wires marked as being used for testing purposes should be removed.
Grounding connections are made to the two ground screws provided on the base – one internal and one
external.
After all connections have been completed and verified, apply power to the unit.
Required & Factory Wired Connection
The ProtEX-MAX comes with a pre-wired connection. This connection is detailed below, and must be
maintained in order for the instrument to function properly.
Figure 1: Integrated ProVu Required Connections
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Warning!
Do not connect any equipment other than Precision
Digital’s expansion modules, cables, or meters to the
RJ45 M-LINK connector. Otherwise damage will
occur to the equipment and the meter.
Figure 3. Power Connections
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+
-
Connectors Labeling
The connectors’ label, affixed to the meter, shows the location of all connectors available with requested
configuration.
Figure 2. Connector Labeling for Fully Loaded PD8-7000
Power Connections
Power connections are made to a two-terminal connector labeled POWER on Figure 2. The meter will
operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring convention.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Figure 4. Thermocouple Input
Connections
Figure 5. Three-Wire RTD Input
Connections
Figure 6. Two-Wire RTD Input
Connections
Figure 7. Four-Wire RTD Input
Connections
SIGNAL
EXC T+ COM
1 2 3
RTD
TYPE
TC
100
RANGE
10
M-LINK
1 2 3 4 5 6 7 8
-
+
TC
RTD
Sensor
SIGNAL
EXC T+ COM
1 2 3
RTD
TYPE
TC
100
RANGE
10
M-LINK
1 2 3 4 5 6 7 8
RTD
Sensor
SIGNAL
EXC T+ COM
1 2 3
RTD
TYPE
TC
100
RANGE
10
M-LINK
1 2 3 4 5 6 7 8
RTD
Sensor
SIGNAL
EXC T+ COM
1 2 3
RTD
TYPE
TC
100
RANGE
10
M-LINK
1 2 3 4 5 6 7 8
NC
Signal Connections
Signal connections are made to a three-terminal connector labeled SIGNAL on Figure 2.
Thermocouple and RTD Connections
The following figures show examples for thermocouple and RTD connections.
The TYPE selector switch must be set to the proper position for the meter to accept the selected RTD or
TC input.
The RANGE selector switch is used to select 100-ohm platinum or 10-ohm copper RTD. The 1000-ohm
platinum RTD input uses the same setting as the 100-ohm RTD.
The input type is selected using the Setup menu.
The selected thermocouple input must correspond to the thermocouple sensor and wire type used.
The meter accepts two, three, or four-wire RTDs. The three-wire RTD connection has built-in lead wire
compensation.
Lead wire compensation for two-wire RTDs can be applied using the Adjust menu. See the Advanced
Features Menu on page 40.
The four-wire RTD connection is similar to the three-wire. One of the leads of a four-wire RTD is not
connected and may be clipped off.
The three-wire connection provides sufficient lead wire compensation to obtain accurate readings even
with long leads.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
ProtEX-MAX to RS-485
Serial Converter Connections
RS-485 Serial
Converter
ProtEX-MAX RS485 Connections
DO DI DO DI DI DO DI DO
RTD1
SIGNAL
EXC T+ COM
1 2 3
RTD
TYPE
TC
100
RANGE
10
M-LINK
1 2 3 4 5 6 7 8
RTD2 RTD3
F4 COM DI DI DO DO
TX
RX
1 2 3 4 51 2
Connections for Averaging RTD Sensors
To obtain the average temperature from 2 to 10 RTD sensors, connect all the sensors in parallel and
select the number of sensors in the RTD Total (rtdtot) menu. See the Advanced Features Menu on
page 40.
Figure 8. Average Temperature RTD Input Connections
Serial Communications Connections
The ProtEX-MAX has a 5 position terminal block for connecting RS-485 serial devices.
Figure 9 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.
Figure 9: 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 10. Three-Wire RS485 Connection
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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 11: 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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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.
NOTICE
PROVU expansion 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.
!
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.
Figure 12: RS-485 Two-Wire Multi-Drop Wiring
When using more than one instrument in a multi-drop or multi-point mode, each meter must be provided
with its own unique address.
Using PROVU Serial Adapters
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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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
C NONO NC NC C
RELAY4 RELAY3
4 36 5 2 1
C NONO NC NC C
RELAY2 RELAY1
4 36 5 2 1
C
R
C
R
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.
Relay Connections
Relay connections are made to two six-terminal connectors labeled RELAY1 – RELAY4 on Figure 2.
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 13. 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 14. AC and DC Loads Protection
Choose R and C as follows:
R: 0.5 to 1 Ω for each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts
Notes:
1. Use capacitors rated for 250 VAC.
2. RC networks may affect load release time of solenoid loads. Check to confirm proper operation.
3. Install the RC network at the meter's relay screw terminals. An RC network may also be installed
across the load. Experiment for best results.
Figure 15. Low Voltage DC Loads Protection
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.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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
F4 Digital Input Connections
A digital input, F4, is standard on the meter. This digital input connected with a normally open closure
across F4 and COM, or with an active low signal applied to F4.
Figure 16. F4 Digital Input Connections
4-20 mA Output Connections
Connections for the 4-20 mA output are made to the connector terminals labeled MA OUT. The 4-20 mA
output may be powered internally or from an external power supply.
Figure 17. 4-20 mA Output Connections
Power Supply for Analog Output Loop or Other Uses
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 37). 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 18. Interlock Connections
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
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.
Digital Input Connection
Factory Default Function
I1
MENU
I2
RIGHT arrow
I3
UP arrow
I4
ENTER arrow
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
9 10
O4 G
DI 1-4 DO 1-4
5 VDC GND
!
!
Digital I/O Connections
The ProtEX-MAX has a 10 position terminal block for connecting digital inputs and outputs.
Figure 19: Digital I/O Connections
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.
See Digital Inputs & Outputs in the Specification on page 8 for details on the digital inputs.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
The meter is factory calibrated prior to shipment to read temperature in degrees
Fahrenheit. The calibration equipment is traceable to NIST standards.
WARNING
Take caution when cleaning the window glass as it may result in unintentional SafeTouch button events. Only clean the ProtEX-MAX
when the system is safely shut down, and inspect the ProtEX-MAX
for proper configuration prior to system restart.
Setup and Programming
Overview
There are two switches, located at the back of the meter, to set the input selection for TC or RTD and for
100-ohm platinum or 10-ohm copper. The 1000-ohm RTD input uses the same setting as the 100-ohm.
Setup and programming is done through the front panel buttons.
After power and input signal connections have been completed and verified, apply power to the meter.
SafeTouch® 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 DISABLE on the switch labeled NO-CONTACT
BUTTONS located on the connector board.
To actuate a button, press one finger to the glass directly over the marked button area. Then retract finger
more than three inches from the glass before pressing the next button. When the cover is removed, the
four mechanical buttons located next to the sensors are used. The sensors are disabled when a mechanical button is pressed and will automatically be re-enabled after 60 seconds of inactivity.
The SafeTouch Buttons are designed to filter normal levels of ambient interference and to protect against
false triggering, however, it is recommended that the SafeTouch Buttons be disabled (slide switch to
LOCK) if there is an infrared interference source in line-of-sight to the display.
The SafeTouch Buttons are configured by default to duplicate the function of the front panel mechanical
pushbuttons associated with the integrated meter. The symbols by each SafeTouch button correspond to
a mechanical button as shown in the table on the next page.
SafeTouch Button Tips:
• To the extent possible, install the display facing away from sunlight, windows, reflective objects and
any sources of infrared interference.
• Keep the glass window clean.
• Tighten the cover securely.
• Use a password to prevent tampering.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Button Symbol
Description
LED
Status
or
Menu
1-8
Alarm 1-8 indicator
or
Right arrow/F1
1-8-M
Flashing: Relay in
manual control mode
or
Up arrow/F2
M
Manual control relays
&/or analog output
or
Enter/F3
1-4
Flashing: Relay
interlock switch open
Note:
F4 is a digital input.
Note:
LEDs for relays in manual
mode flash with the “M” LED
every 10 seconds.
Front Buttons and Status LED Indicators
• Press the Menu button to enter or exit the Programming Mode at any time.
• Press the Right arrow button to move to the next digit during digit or decimal point programming.
• Press or hold the Up arrow button to scroll through the menus,
move the decimal point or to increment the value of a digit.
• Press the Enter button to access a menu or to accept a setting.
• Press and hold the Menu button for three seconds to access the advanced features of the meter.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Note: If you decide to update your MeterView Pro software, once the installation has completed, you
will be asked if you want to update the setup files located on the meter itself. This way, you will always
have the most current version on the meter for future installs.
Warn-
ing!
Do not unplug the meter while the new installation files are being written to it. The
meter will display uwrite during the process and you will receive an onscreen notifi-
cation once the process is complete.
MeterView® Pro Software
The meter can also be programmed using the PC-based MeterView Pro software included with the meter.
This software can be installed on any Microsoft® Windows® (XP/Vista/7/8/10) computer by connecting
the meter’s onboard USB. The meter is powered by the USB connection, so there is no need to wire anything prior to programming the meter, though USB is intended only for meter configuration.
MeterView Pro Installation
1. Connect one end of the provided USB cable to the internal electronics module and the other end
to the computer. The computer will automatically install the driver software it needs to talk to the
meter. Only one meter may be connected at a time. Attaching mul-
tiple meters will cause a conflict with the meter software.
2. Once the driver is installed, an AutoPlay dialog should appear
for the drive “MAINSTAL.” Click “Open folder to view files.”
If the computer does not display an AutoPlay dialog for the
drive “MAINSTAL,” you should open My Computer and doubleclick on the drive labeled “MAINSTAL.”
3. Double-click on the file named “MAStart.” The program will
open a few windows and install two programs on your computer. Simply follow the onscreen instructions until you see
one of the dialogs below. If you receive a “User Account Control” warning, click “Yes.”
4. If there is an update available, click the “Update” button to in-
stall the new version. Otherwise, click “Configure” to begin programming your meter.
Data logging for one meter at a time is available with MeterView Pro software. More advanced data acquisition may be accomplished by using any Modbus RTU compliant software. Additional information regarding configuration and monitoring of the meter using MeterView Pro software is available online.
Go to www.predig.com/meterview-pro.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Display
Parameter
Action/Setting
Description
setup
Setup
Enter Setup menu
Input
Input
Enter Input selection
menu
tc
TC
Set meter for
thermocouple input
J, K, T, E, R, S, B, N,
C
Rtd
RTD
Set meter for RTD
input
100Pt, 1000Pt, 10Cu,
120Ni
A385
A385
Set meter for 0.00385
curve
A392
A392
Set meter for 0.00392
curve
F or C
F or C
Press Enter to select
degrees F or C
unitS
Units
Select the display
units/tags
Dec pt
Decimal
point
Set decimal point
dddd, dddd.d,
dddd°F, dddd.dF
dsplay
Display
Enter the Display
menu
Line 1
Line 1
Press Enter to assign
the upper display
parameter (default:
PV - temperature)
Line 2
Line 2
Press Enter to assign
the lower display
parameter (default:
engineering units)
d-Inty
Display
intensity
Set display intensity
level from 1 to 8
RELaY
Relay
Enter the Relay menu
RLY 1
Relay 1
Relay 1 setup
Act 1
Action 1
Set relay 1 action
Auto
Automatic
Set relay for
automatic reset
A-nman
Automanual
Set relay for
automatic & manual
reset
any time
LatcH
Latching
Set relay for latching
operation
Display
Parameter
Action/Setting
Description
Lt-CLr
Latchingcleared
Set relay for latching
operation with manual
reset only after alarm
condition has cleared
Altern
Alternate
Set relay for
alternation control
Sanmpl
Sampling
Set relay for sampling
operation
OFF
Off
Disable relay and
front panel status
LED (Select Off to
enable Interlock
feature)
Set 1
Set 1
Program set point 1
RSt 1
Reset 1
Program reset point 1
RLY 2
Relay 2
Relays 2-4 setup
FaiLSF
Fail-safe
Enter Fail-safe menu
FLS 1
Fail-safe 1
Set relay 1 fail-safe
operation
on
On
Enable fail-safe
operation
off
Off
Disable fail-safe
operation
FLS 2
Fail-safe 2
Set relays 2-4 failsafe operation
DeLAY
Delay
Enter relay Time
Delay menu
DLY 1
Delay 1
Enter relay 1 time
delay setup
On 1
On 1
Set relay 1 On time
delay
OFF 1
Off 1
Set relay 1 Off time
delay
DLY 2
Delay 2
Enter relays 2-4 time
delay setup
break
Break
Set relay condition if
input break detected
ignore
Ignore
Ignore input break
condition
(Processed as an
upscale condition)
On
On
Relay goes to alarm
condition when input
break is detected
Display Functions & Messages
The meter displays various functions and messages during setup, programming, and operation. The
following table shows the main menu functions and messages in the order they appear in the menu.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Display
Parameter
Action/Setting
Description
Off
Off
Relay goes to nonalarm condition when
input break is
detected
Aout
Analog
output
Enter the Analog
output scaling menu
Dis 1
Display 1
Program display 1
value
Out 1
Output 1
Program output 1
value (e.g. 4.000 mA)
Dis 2
Display 2
Program display 2
value
Out 2
Output 2
Program output 2
value (e.g. 20.000
mA)
reset
Reset
Press Enter to access
the Reset menu
Rst Hi
Reset high
Press Enter to reset
max display
Rst Lo
Reset low
Press Enter to reset
min display
Rst HL
Reset
hi/low
Press Enter to reset
max & min displays
Contrl
Control
Enter Control menu
Display
Parameter
Action/Setting
Description
Auto
Automatic
Press Enter to set
meter for auto
operation
mAn
Manual
Press Enter to
manually control
relays or analog
output operation
pass
Password
Enter the Password
menu
Pass 1
Password 1
Set or enter
Password 1
Pass 2
Password 2
Set or enter
Password 2
Pass 3
Password 3
Set or enter
Password 3
unloc
Unlocked
Program password to
lock meter
locd
Locked
Enter password to
unlock meter
99999
-9999
Flashing
display
Overrange condition
Underrange condition
Open
Open
Open sensor
indication
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
0 0 1.000
00 1 .000
00 2 .000
set 1
set 1
set 1
R
eset 1
Select
Next
Digit
Increment
Digital
V
alue
Accept
Setting
Main Menu
The main menu consists of the most commonly used functions: Setup, Reset, Control, and Password.
• Press Menu button to enter
Programming Mode then press the Up
arrow button to scroll main menu.
• Press Menu, at any time, to exit and
return to Run Mode. Changes made to
settings prior to pressing Enter are not
saved.
• Changes to the settings are saved to
memory only after pressing Enter/F3.
• The display moves to the next menu
every time a setting is accepted by
pressing Enter/F3.
Setting Numeric Values
The numeric values are set using the Right and Up arrow buttons. Press Right arrow to select next digit
and Up arrow to increment digit value.
The digit being changed is displayed brighter than the rest.
Press and hold up arrow to auto-increment the display value.
Press the Enter button, at any time, to accept a setting or Menu button to exit without saving changes.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Setting Up the Meter (setup)
It is very important to read the following information, before proceeding to program the meter:
• The meter is factory calibrated prior to shipment to read temperature in degrees Fahrenheit. The
calibration equipment is traceable to NIST standards.
• There is no need to calibrate the meter, simply select the input type, °F or °C, and decimal point.
The Setup menu is used to select:
1. Input type the meter will accept
2. Degrees F or C
3. Select the display units/tags
4. Decimal point position and F or C indication
5. Display parameter and intensity
6. Relay operation
7. 4-20 mA analog output scaling
Press the Enter button to access any menu or press Up arrow button to scroll through choices. Press the
Menu button to exit at any time.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Setting the Input Signal (Input)
Enter the Input menu to set up the meter to accept thermocouple (tc) or RTD (rtd) inputs. The Type
selector switch, located at the rear of the meter, must be set accordingly.
The thermocouple input is capable of accepting various types of thermocouples.
The RTD input is capable of accepting various types of RTD sensors. After selecting 100 Pt or 1000Pt, it is
necessary to select either A385 (0.00385) or A392 (0.00392) coefficient.
Selecting the Temperature Scale (F or C)
The meter can display the temperature in degrees Fahrenheit or Celsius.
Setting the Decimal Point (dEc pt)
The temperature may be displayed with one decimal or with no decimal point. The temperature scale can
also be displayed with the reading. The degree symbol is available only with no decimal point selected.
Pressing the Up arrow scrolls the decimal point and temperature format selections.
Setting the Display Parameter & Intensity (dsplay)
Display line 1 (line 1) can be programmed to display:
1. Process value
2. Relay set points
3. Max & min values
4. Modbus input
5. Display reading and units
Display line 2 (line 2) can be
programmed to display:
1. Process value
2. Relay set points
3. Max & min values
4. Engineering units or custom
legends
5. Modbus input
6. Off (no display)
7. Display reading and units
Display Intensity: The meter has eight
display intensity levels to give the best
performance under various lighting
conditions. Select intensity 8 for outdoor
applications. The default intensity is 8.
Press the Up arrow to change selection,
press Enter to accept setting, and press
Menu to exit programming
After setting up the input and display,
press the Menu button to exit
programming and skip the rest of the
setup menu. Press the Menu button
again and the Up arrow to reach the
Setup menu again and complete the
setup of the meter.
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Display
Character
Display
Character
Display
Character
Display
Character
0
0
C
C
k
K
v V 1
1
c
c
l
L
uw w 2
2
d
d
n m
m
x X 3
3
e
E
n
n
y Y 4
4
f
F
O
O
z Z 5
5
g
G
o
o
- - 6
6
9
g
p
P
/ / 7
7
H
H
q
q
[ ] 8
8
h
h
r
r
] [ 9
9
I
I
s
S
=
=
A
A
I
i
t
t
!
Degree(<)
b
b
j
J
u
u
Space
Caution!
During setup, the relays do not
follow the input and they will
remain in the state found prior
to entering the Relay menu.
Setting the Input Units or Custom Tags (units)
Enter the input unit or custom tag that will be displayed if alternating rate, total, or grand total and units is
selected in the units menu, or d unit is selected as the Lower display parameter. See the flow chart on
page 29 to access the display menu to show the unit or tag on the Lower display. The engineering units or
custom legends can be set using the following 7-segment character set:
Notes:
Degree symbol represented by (<) if programming with MeterView® Pro.
The letters “m” and “w” use two 7-segment LEDs each; when selected the characters to the right are shifted
one position.
Press and hold up arrow to auto-scroll the characters in the display.
Setting the Relay Operation (relay)
This menu is used to set up the operation of the relays.
1. Relay action
a. Automatic reset only (non-latching)
b. Automatic + manual reset at any time (non-
latching)
c. Latching (manual reset only)
d. Latching with Clear (manual reset only after alarm condition has cleared)
e. Relay alternation control (automatic reset only)
f. Sampling (the relay is activated for a user-specified time)
g. Off (relay disabled and
Interlock feature enabled)
2. Set point
3. Reset point
4. Fail-safe operation
a. On (enabled)
b. Off (disabled)
5. Time delay
a. On delay (0-999.9
seconds)
b. Off delay (0-999.9
seconds)
6. Relay action for loss (break)
of input (ignore, on, off)
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Setting the Relay Action
Operation of the relays is programmed in the Action
menu. The relays may be set up for any of the following
modes of operation:
1. Automatic reset (non-latching)
2. Automatic + manual reset at any time (non-latching)
3. Latching (manual reset only, at any time)
4. Latching with Clear (manual reset only after alarm condition has cleared)
5. Relay alternation control (automatic reset only)
6. Sampling (the relay is activated for a user-specified time)
7. Off (relay disabled and Interlock feature enabled)
The following graphic shows relay 1 action setup; relay 2-4 are set up in a similar fashion.
Programming Set and Reset Points
High alarm indication: program set point above reset point.
Low alarm indication: program set point below reset point.
The deadband is determined by the difference between set
and reset points. Minimum deadband is one display count. If
the set and reset points are programmed with the same
value, the relay will reset one count below the set point.
Note: Changes are not saved until the reset point has been
accepted.
Setting Fail-Safe Operation
In fail-safe mode of operation, the relay coil is energized when the process variable is
within safe limits and the relay coil is de-energized when the alarm condition exists. The
fail-safe operation is set independently for each relay. Select on to enable or select off to disable failsafe operation.
Programming Time Delay
The On and Off time delays may be programmed for each relay between 0 and 999.9 seconds. The
relays will transfer only after the condition has been maintained for the corresponding time delay.
The On time delay is associated with the set point.
The Off time delay is associated with the reset point.
Relay Action for Loss of Input (Input Break)
Each relay may be programmed to go to one of the following conditions when the meter detects the loss
of the input signal:
1. Turn On (Go to alarm condition)
2. Turn Off (Go to non-alarm condition)
3. Ignore (Processed as an upscale condition)
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High Alarm Operation (Set > Reset)
For Manual reset mode, ACK can be pressed anytime
to turn "off" relay. To detect a new alarm condition, the
signal must go below the set point, and then go above
it.
Low Alarm Operation (Set < Reset)
For Manual reset mode, ACK can be pressed anytime
to turn "off" relay. For relay to turn back “on”, signal
must go above set point and then go below it.
High Alarm with Fail-Safe Operation (Set > Reset)
Note: Relay coil is energized in non-alarm condi-
tion. In case of power failure, relay will go to
alarm state.
Low Alarm with Fail-Safe Operation
(Set < Reset)
Note: Relay coil is energized in non-alarm condi-
tion. In case of power failure, relay will go to
alarm state.
Relay and Alarm Operation Diagrams
The following graphs illustrate the operation of the relays, status LEDs, and ACK button.
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Set
Reset
Relay
LED
Input
Sample
Time
Sample
Time
Sample
Time
Pump Alternation Control Operation
Relay Sampling Operation
When the signal crosses the set point, the relay trips and the sample time starts. After the sample time
has elapsed, the relay resets. The cycle repeats every time the set point is crossed, going up for high
alarms and going down for low alarms.
The sample time can be programmed between 0.1 and 5999.9 seconds.
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Relay
LED
Input
Input Break = Ignore
de-energized energized
off on
Relay
LED
Input Break = Off
Relay
LED
Input Break = On
Set
Reset
INPUT
BREAK
INPUT
BREAK
Signal Loss or Input Break Relay Operation
The following graph shows the input break relay operation for a high alarm relay.
When the meter detects a break in the input, the relay will go to one of the following selected actions:
1. Turn On (Go to alarm condition)
2. Turn Off (Go to non-alarm condition)
3. Ignore (Processed as an upscale condition)
Time Delay Operation
The following graphs show the operation of the time delay function.
When the signal crosses the set point, the On time delay timer starts and the relay trips when the time
delay has elapsed. If the signal drops below the set point (high alarm) before the time delay has elapsed,
the On time delay timer resets and the relay does not change state. The same principle applies to the Off
time delay.
Note: If “Automatic or Manual (A-nmAn)” reset mode is selected, the LED follows the reset point and not
the relay state when the
relay is acknowledged.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Alarm #
HI or LO
Alarm
Set
Point
Reset
Point
Power-Up
Reading
Relay
& LED 1 HI
1000
500
499
Off
2
LO
700
900
499
On
3
LO
250
400
499
Off 4 HI
450
200
499
On
Fail-Safe
Selection
Non-Alarm State
Alarm State
Power Failure
NO
NC
NO
NC
Off
Open
Closed
Closed
Open
Relays go to
non-alarm state
On
Closed
Open
Open
Closed
Relays go to
alarm state
LED
Status
LED
Status
1
Alarm 1
5 Alarm 5
2
Alarm 2
6 Alarm 6
3
Alarm 3
7 Alarm 7
4
Alarm 4
8 Alarm 8
Relay Operation Details
Overview
The relay capabilities of the meter expand its usefulness beyond simple indication to provide users with
alarm and control functions. These capabilities include front panel alarm status LEDs as well as either 2
or 4 optional internal relays. Typical applications include high or low temperature alarms, control
applications such as simple on/off temperature control. There are four basic ways the relays can be used:
1. High or Low Alarms with Latching or Non-Latching Relays
2. Simple On/Off Control with 100% Adjustable Deadband
3. Sampling (Based on Time)
4. Relay Alternation Control
Relays Auto Initialization
When power is applied to the meter,
the front panel LEDs and alarm relays
will reflect the state of the input to the
meter. The following table indicates
how the alarm LEDs and relays will
react on power-up based on the set
and reset points:
Fail-Safe Operation
The following table indicates
how the relays behave based
on the fail-safe selection for
each relay:
Note: NO = Normally Open,
NC = Normally Closed.
This refers to the
condition of the relay
contacts when the power to the meter is off.
Front Panel LEDs
The LEDs on the front panel provide status indication for the following:
The meter is supplied with four alarm points that include front
panel LEDs to indicate alarm conditions. This standard feature
is particularly useful for alarm applications that require visualonly indication. The LEDs are controlled by the set and reset
points programmed by the user. When the display reaches a
set point for a high or low alarm, the corresponding alarm LED will turn on. When the display returns to
the reset point the LED will go off. The front panel LEDs respond differently for latching and non-latching
relays.
For non-latching relays, the LED is always off during normal condition and always on during alarm
condition, regardless of the state of the relay (e.g. Relay acknowledged after alarm condition).
For latching relays, the alarm LEDs reflect the status of the relays, regardless of the alarm condition. The
following tables illustrate how the alarm LEDs function in relation to the relays and the acknowledge
button (Default: F3 key assigned to ACK).
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Page 36
ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Warning!
In latching relay mode, latched relays will reset
(unlatch) when power is cycled.
Relay terminology for following tables
Terminology
Relay Condition
On
Alarm (Tripped)
Off
Normal (Reset)
Ack
Acknowledged
Automatic reset only
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack (No effect)
On
On
Normal
Off
Off
Automatic + manual reset at any time
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Normal
Off
Off
Next Alarm
On
On
Ack
On
Off
Normal
Off
Off
Manual reset any time
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack
Off
Off
Manual reset only after alarm
condition has cleared
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack (No effect)
On
On
Normal
On
On
Ack
Off
Off
Latching and Non-Latching Relay Operation
The relays can be set up for latching (manual reset) or
non-latching (automatic reset) operation.
The On and Off terminology does not refer to the status of
the relay’s coil, which depends on the fail-safe mode
selected.
Non-Latching Relay (Auto)
In this application, the meter is set up for automatic reset
(non-latching relay). Acknowledging the alarm while it is still
present has no effect on either the LED or the relay. When
the alarm finally goes away, the relay automatically resets
and the LED also goes off.
Non-Latching Relay (A-nman)
In this application, the meter is set up for automatic and
manual reset at any time (non-latching relay). The LED and
the relay automatically reset when the meter returns to the
normal condition.
The next time an alarm occurs, the operator acknowledges
the alarm manually while the alarm condition still exists.
This causes the relay to reset, but the LED stays on until
the meter returns to the normal condition.
Latching Relay (LatcH)
In this application, the meter is set up for manual reset at any
time. Acknowledging the alarm even if the alarm condition is
still present resets the relay and turns off the LED.
Latching Relay (Lt-Clr)
In this application, the meter is set up for manual reset only
after the signal passes the reset point (alarm condition has
cleared). Acknowledging the alarm while it is still present has
no effect on either the LED or the relay. When the alarm is
acknowledged after it returns to the normal state, the LED
and the relay go off. Notice that the LED remains on, even
after the meter returns to the normal condition. This is
because, for latching relays, the alarm LED reflects the
status of the relay, regardless of the alarm condition.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
+5 I1 I2 I3 I4 O1 O2 O3 O4 G
DO 1-4
GND
ACK
PDA1044 Digital I/O Module
1 2 3 4 5 6 7 8 9 10
DI 1-4
1 2 3 4 5 6
+5 I1 I2 I3 I4 O1
7 8
O2 O3
9 10
O4 G
DI 1-4 DO 1-4
5 VDC GND
SW2
SW1
Acknowledging Relays
There are two ways to acknowledge relays programmed for manual reset:
1. Via the programmable front panel function keys F1-F3 (Default: F3 assigned to ACK).
2. Remotely via a normally open pushbutton wired across one of the digital inputs and the +5 V
terminals on the digital I/O modules, or using the F4 digital input, which is triggered with a contact
closure to COM, or with an active low signal (see page 20).
When the ACK button or the assigned digital input is closed, all relays programmed for manual reset are
acknowledged.
Figure 20. Acknowledge Relays w/Function Key or Digital Input
Setting Up the Interlock Relay (Force On) Feature
Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature:
1. Access the Setup – Relay – Action menu and set the action to off.
2. In the Advanced features – User menu program any of the digital inputs to Force On any of the
internal relays (1-4).
3. Connect a switch or dry contact between the +5V terminal and the corresponding digital input (dI-1 to
dI-4) terminal.
Interlock Relay Operation
Relays 1 & 2 are energized when SW1 & SW2 switches are closed and the front panel LEDs are off. If
the contact to the digital input is opened, the corresponding front panel LED flashes indicating this
condition. The processes being controlled by the interlock relay stop and will re-start only after the
interlock relay is activated by the digital inputs.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
For instructions on how to program numeric
values see Setting Numeric Values, page 27.
Scaling the 4-20 mA Analog Output (Aout)
The 4-20 mA analog output can be scaled to provide a 4-20 mA signal for any display range selected.
No equipment is needed to scale the analog output; simply program the display values to the
corresponding mA output signal.
The Analog Output menu is used to program the 4-20 mA output based on display values.
Note: During the analog output scaling, the display value is always indicated with a decimal point
regardless of the decimal point selection for the temperature display.
Reset Menu (reset)
The Reset menu is used to reset the maximum or minimum reading (peak or valley) reached by the
process; both may be reset at the same time by selecting “reset high & low” (rst HL).
Control Menu (Contrl)
The Control menu is used to control the 4-20 mA analog output and the relays manually, ignoring the
input. Each relay and analog output can be programmed independently for manual control. Selecting
automatic control sets all relays and analog output for automatic operation.
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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.
Did you forget the password?
The password may be disabled by entering a master password once. If you are authorized
to make changes, enter the master password 508655 to unlock the meter.
Setting Up the Password (pass)
The Password menu is used for programming three levels of security to prevent unauthorized changes to
the programmed parameter settings.
Protecting or Locking the Meter
Enter the Password menu and program a six-digit password.
For instructions on how to program numeric values see Setting Numeric Values, page 27.
Making Changes to a Password Protected Meter
If the meter is password protected, the meter will display the message Locd (Locked) when the Menu
button is pressed. Press the Enter button while the message is being displayed and enter the correct
password to gain access to the menu.
Note: After exiting the programming mode, the meter returns to its password protected condition.
Disabling Password Protection
To disable the password protection, access the Password menu and enter the correct password twice, as
shown below. The meter is now unprotected until a new password is entered.
If the correct six-digit password is entered, the meter displays the message unLoc (unlocked) and the
protection is disabled until a new password is programmed.
If the password entered is incorrect, the meter displays the message Locd (Locked) for about two
seconds, and then it returns to Run Mode. To try again, press Enter while the Locked message is
displayed.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Display
Parameter
Action/Setting
Adjust
Adjust
Set adjust value to
offset temperature
reading
T cal
T Cal
Enter temperature
calibration menu
T lo
T Low
Apply the low
temperature input
(e.g. 32°F)
T Hi
T High
Apply the high
temperature input
(e.g. 1000°F)
rtdtot
RTD Total
Set the number of
RTDs connected in
parallel to obtain
average temperature
filtEr
Filter
Set noise filter value
bypASs
Bypass
Set filter bypass value
Round
Round
Set the rounding
value for display
variables
seriAl
Serial
Set serial
communication
parameters
Display
Parameter
Action/Setting
SlaveId
Slave ID
Set slave ID or meter
address
baud
Baud rate
Select baud rate
Tr dLY
Transmit
delay
Set transmit delay for
serial communication
Parity
Parity
Select parity
Even, Odd, or None
with 1 or 2 stop bits
t-byt
Time byte
Set byte-to-byte
timeout
SelEct
Select
Enter the Select
menu
AoutPr
Analog
output
programmin
g
Program analog
output parameters
Source
Source
Select source for the
4-20 mA output
O-rang
Overrange
Program mA output
for display overrange
Advanced Features Menu
To simplify the setup process, functions not needed for most applications are located in the Advanced
Features menu.
Press and hold the Menu button for three seconds to access the advanced features of the meter.
Advanced Features Menu & Display Messages
The following table shows the functions and messages of the Advanced Features menu in the order they
appear in the menu.
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Display
Parameter
Action/Setting
u-rang
Underrange
Program mA output
for display
underrange
Break
Loop Break
Set relay condition if
loop break detected
mAx
Maximum
Program maximum
mA output allowed
min
Minimum
Program minimum
mA output allowed
Calib
Calibrate
Calibrate 4-20 mA
output (internal
reference source
used for scaling the
output)
4 mA
4 mA output
Enter mA output
value read by
milliamp meter with at
least 0.001 mA
resolution
20 mA
20 mA
output
Enter mA output
value read by
milliamp meter with at
least 0.001 mA
resolution
user
User I/O
Assign function keys
and digital I/O
F1
F1 function
key
Assign F1 function
key
F2
F2 function
key
Assign F2 function
key
Display
Parameter
Action/Setting
F3
F3 function
key
Assign F3 function
key
F4
F4 function
Assign F4 function
(digital input)
dI I
Digital input
1
Assign digital input 14
dO 1
Digital
output 1
Assign digital output
1- 4
ICal
Internal
temp
calibration
Enter internal
temperature
calibration (used for
factory calibration
only)
mref
Measured
temp
reference
Enter the measured
reference
temperature in
degrees Celsius (e.g.
25.0)
0nmv
0 mV
Apply 0.000 mV input
Internal Calibration
100nmv
100 mV
Apply 100.000 mV
input
Diag
Diagnostics
Display parameter
settings
LED t
LED test
Test all LEDs
Info
Information
Display software and
S/N information
Erase
Erase
Erase MeterView Pro
software stored in
meter’s memory
This parameter allows the user to select an offset adjustment to the temperature being displayed. Offset
adjustment values can be either positive or negative and can be any number within 50.0F (+27.8C). The
offset adjustment value is programmed through the Adjust menu.
The offset adjustment feature can be useful to compensate for errors due to thermocouple junctions or
excessive lead wire resistance in RTDs.
Note: The offset adjustment value is not reset to zero when the type of temperature sensor is changed
Offset Adjust (Adjust)
(i.e. TC type or RTD curve). Celsius/Fahrenheit conversion must be made manually by the user.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
• The meter is factory calibrated prior to shipment to read temperature in degrees
Fahrenheit. The calibration equipment is traceable to NIST standards.
• There is no need to calibrate the meter, simply select the input type, °F or °C, and
decimal point.
• Check calibration of the meter at least every 12 months.
Type of input
Input 1
(Low)
Input 2
(High)
Check
(Middle)
Type J
32F
1184F
600F
Type K
32F
1895F
960F
Type T
32F
698F
360F
Type E
32F
1652F
800F
Type R
32F
3110F
1500F
Type S
32F
3110F
1500F
Type B
32F
3110F
1500F
Type N
32F
1472F
700F
Type C
500F
3650F
1800F
10 Cu RTD
32F
9.035
450F
18.032
200F
12.639
100 Pt RTD
(0.00385)
32F
100
1148F
320.12
590F
215.61
100 Pt RTD
(0.00392)
32F
100
1148F
324.49
590F
217.89
120 Ni RTD
32F
120
410F
315.31
221F
205.22
1000 Pt RTD
(0.00385)
32F
1000
900F
2750.4
450F
1876.5
1000 Pt RTD
(0.00392)
32F
1000
900F
2785.1
450F
1893.7
Recalibration of the Meter (t CAL)
The Calibration (t CAL) menu is used to recalibrate the thermocouple and RTD inputs.
Allow at least 30 minutes warm-up time before performing recalibration procedure to ensure specified
accuracy.
Recommended Calibration Points
To recalibrate the meter, it is recommended to use the Fahrenheit scale; this will give a greater degree of
accuracy to the calibration. The scale can be changed to the Celsius scale after calibration is completed.
The meter will display temperature accurately in any scale. The following table shows the recommended
low and high calibration points for all types.
Recalibration Procedure
1. Connect signal to the meter using the appropriate wire (e.g. type J thermocouple wire to recalibrate
type J input), see page 15.
2. Set up the meter to accept the selected input (e.g. type J T/C), see page 29.
3. Set up the meter to display temperature in degrees Fahrenheit.
4. Apply signal corresponding to input 1 (32°F) and program the display to read 32.0.
5. Apply signal corresponding to input 2 (1184°F for type J) and program the display accordingly.
6. After the meter accepts input 2, the display returns to reading mode. This completes the recalibration
procedure for the selected input.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Warning!
Do not connect any equipment other than
Precision Digital’s expansion modules, cables, or
meters to the RJ45 M-LINK connector. Otherwise
damage will occur to the equipment and the meter.
Noise Filter (filter)
The noise filter is available for unusually noisy signals that cause an unstable process variable display.
The noise filter averages the input signal over a certain period. The filter level determines the length of
time over which the signal is averaged. The filter level can be set between 2 and 199. The higher the filter
level, the longer the averaging time and so the longer it takes the display to settle to its final value. Setting
the filter level to zero disables the filter function.
Noise Filter Bypass (bypass)
The noise filter bypass changes the behavior of the meter so that small variations in the signal are filtered
out but large abrupt changes in the input signal are displayed immediately. The bypass value determines
the minimum amount of signal change to be displayed immediately. All signal changes smaller than the
bypass value are filtered or averaged by the meter. The noise filter bypass may be set between 0.1 and
99.9% of full scale.
Rounding Feature (round)
The rounding feature is used to give the user a steadier display with fluctuating signals. Rounding is used
in addition to the filter function.
Rounding causes the display to round to the nearest value according to the rounding selected. This
setting affects the last two digits, regardless of decimal point position. On this ProVu model, the valid
settings are 1, 2, 5, and 10 (only).
Modbus RTU Serial Communications (serial)
The meter is equipped with serial communications capability as a standard feature using the Modbus
RTU Serial Communication Protocol.
The meter may be connected to a PC for initial configuration via the onboard micro USB connection. For
ongoing digital communications with a computer or other data terminal equipment, an RS-232, or RS-485
option is required; see Ordering Information on page 5 for details.
Note: More detailed instructions are provided with each optional serial communications adapter.
Note: Refer to the ProVu® Modbus Register Tables located at www.predig.com for details.
When using more than one meter in a multi-drop mode, each meter must be have its own unique Slave
ID or meter address. The ID or address may be programmed between 1 and 247. The transmit delay may
be set between 0 and 199 ms. The parity can be set to even, odd, or none with 1 or 2 stop bits.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
PDA8485
DO
DO
DI
DI
GND
DO
DO
DI
DI
GND
RS-485 DEVICE
PDA8485
DATA
DATADO
DO
DI
DI
GND GND
RS-485 DEVICE
Serial Communications Overview
RS-232 and RS-485 are standard interfaces approved by the Electronic Industries Alliance (EIA) for connecting serial devices. In EIA terms, the device (e.g. meter) that connects to the interface is called a Data
Communications Equipment (DCE) and the device to which it connects (e.g. the computer) is called a
Data Terminal Equipment (DTE).
RS-485 can support multi-point connections per line because it uses lower-impedance drivers and receivers.
Line drivers and receivers are used to exchange data between two or more points (nodes) on a serial
communications network. Reliable data communications can be difficult in the presence of induced noise,
ground level differences, and other hazards associated with installation of a network. When communicating at high data rates, or over long distances in real world environments, RS-232 is often inadequate.
The differential data transmission of RS-485 offers superior performance in most applications. Differential
signals can help nullify the effects of ground shifts and induced noise signals that can appear as common
mode voltages on a network.
A multi-point network consists of multiple drivers and receivers connected on a single bus, where any
point (node) can transmit and/or receive data. RS-485 allows multiple drivers and receivers on the same
two-wire or four-wire system. The RS-485 standard specifies up to 32 drivers and 32 receivers on a single
bus, but with the introduction of "automatic" repeaters and high-impedance drivers/receivers, this number
can be extended to hundreds of points (nodes) on a network.
The cabling used for an RS-485 serial communications network should always be a high quality cable
such as Belden 8162 or Alpha 6203C. A two-wire system requires two twisted pairs, and a four-wire system requires three twisted pairs (the extra twisted pair is needed for the signal ground).
Figure 21 illustrates how to connect a general four-wire network (a four-wire network actually contains 5
wires).
Figure 21: General Four-Wire Network Connection
Figure 22 illustrates how to connect a general two-wire network (a two-wire network actually contains 3
wires). Note that the PDA7485 and PDA8485 have DIP switches that allow for two-wire connections without the need to externally wire the DO to the DI and the /DO to the /DI (see the converter section for complete details).
Figure 22: General Two-Wire Network Connection
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Select Menu (SElect)
The Select menu is used to program the analog output parameters. There are no other selections for this
model.
Analog Output Programming (AoutPr)
The Analog Output Programming menu is used to program the behavior of the 4-20 mA output. The
following parameters and functions are programmed in this menu:
1. Source: Source for generating the 4-20 mA output (e.g. PV - temperature)
2. Overrange: Analog output value with display in overrange condition
3. Underrange: Analog output value with display in underrange condition
4. Break: Analog output value when input break is detected
5. Max: Maximum analog output value allowed regardless of input
6. Min: Minimum analog output value allowed regardless of input
7. Calibrate: Calibrate the internal 4-20 mA source reference used to scale the 4-20 mA output
Analog Output Source
The source for generating the 4-20 mA output may be assigned to the process variable, maximum or
minimum value reached by the process, one of the set points, or the Modbus PV input.
Analog Output Calibration
To perform the analog output calibration, it is recommended to use a milliamp meter with a resolution of
at least 0.1 µA to measure the output current. The values saved internally during this procedure are used
for scaling the 4-20 mA output in the Setup menu.
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Display
Description
Rst Hi
Reset the stored maximum display
value
Rst Lo
Reset the stored minimum display
value
Rst HL
Reset the stored maximum & minimum display values
tare
Capture tare and zero the display
Rst tr
Reset captured tare and resume
normal operation
relay
Directly access the relay menu
Set 1*
Directly access the set point menu
for relay 1 (*through 8)
Rly d
Disable all relays until a button assigned to enable relays (Rly E) is
pressed
Rly E
Enable all relays to function as they
have been programmed
O Hold
Hold current relay states as they
are until a button assigned to ena-
ble relays (Rly E) is pressed
d Hold
Hold the current display value momentarily while the function key or
digital input is active. The process
value will continue to be calculated
in the background.
Ln1 Hi
Display maximum display value on
line 1
Ln1 Lo
Display minimum display value on
line 1
Ln1 HL
Display maximum & minimum display values on line 1
Display
Description
Ln2 Hi
Display maximum display value on
line 2
Ln2 Lo
Display minimum display value on
line 2
Ln2 HL
Display maximum & minimum display values on line 2
F On 1*
Force relay 1 (*through 4) into the
on state. This function is used in
conjunction with a digital input to
achieve interlock functionality. See
page 37 for details about interlock
relays.
Contrl
Directly access the control menu
disabl
Disable the selected function key or
digital I/O
AcH
Acknowledge all active relays that
are in a manual operation mode
such as auto-manual or latching
Reset
Directly access the reset menu
nmenu
Mimic the menu button functionality
(digital inputs only)
rigHt
Mimic the right arrow/F1 button
functionality (digital inputs only)
up
Mimic the up arrow/F2 button functionality (digital inputs only)
Enter
Mimic the enter/F3 button functionality (digital inputs only)
Alnm 1*
Provide indication when alarm 1
(*through 8) has been triggered
(digital outputs only)
*If installed
Programmable Function Keys User Menu (user)
The User menu allows the user to assign the front panel function keys F1, F2, and F3, the digital input F4
(a digital input located on the signal input connector), and up to eight additional digital inputs to access
most of the menus or to activate certain functions immediately (e.g. reset max & min, hold relay states,
etc.). This allows the meter to be greatly customized for use in specialized applications.
Up to eight digital outputs can be assigned to a number of actions and functions executed by the meter
(i.e. alarms, relay acknowledgement, reset max, min, or max & min, tare, and reset tare). The digital
outputs can be used to trigger external alarms or lights to indicate these specific events.
Function Keys & Digital I/O Available Settings
Refer to the following table for descriptions of each available function key or digital I/O setting.
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The meter is factory calibrated prior to shipment to read temperature in
degrees Fahrenheit. The calibration equipment is traceable to NIST standards.
Notes:
1. If meter is in operation and it is intended to accept only one input type (e.g. 100 Pt),
recalibration of other inputs is not necessary.
2. Allow the meter to warm up for at least 30 minutes before performing the calibration
procedure.
3. Use the Recalibration of the Meter (t CAL) procedure found on page 42.
Internal Temperature Calibration (ICAL)
The Internal Calibration (ICAL) is a function used at the factory to calibrate all the thermocouple and RTD
ranges. This procedure should only be used by qualified personnel.
To recalibrate the meter for a specific input and range, refer to page 42 Recalibration of the Meter (t
CAL).
The Internal calibration menu is part of the Advanced Features menu and is described in the following
pages. This procedure should only be used by qualified personnel.
Note: Most users should not require the use of the Internal Calibration procedure. The T CAL procedure
should be used instead of the ICAL procedure.
Thermocouple Input Internal Calibration (ICAL)
1. Set the Type selector switch in the TC position and using copper wire connect a precision mV
calibrator to the input.
2. In the Setup menu select the input: TC – Type J.
3. Press and hold the Menu button for three seconds to access the advanced features of the meter.
4. Press the Up arrow button to scroll to the Internal calibration menu (ICAL) and press Enter.
5. The meter displays either current calibration (mref). Press Enter to start the calibration process.
6. Measure the room temperature in degrees Celsius using a reliable reference, enter the room
temperature (e.g. 25.0), and press Enter.
7. The meter displays 0mv, apply an input equal to 0.000 mV and press Enter. The display flashes
while accepting the 0 mV input; press Enter again when the display stops flashing.
8. The meter displays 100mv, apply an input equal to 100.000 mV and press Enter. The display
flashes while accepting the 100 mV input; press Enter again when the display stops flashing.
9. Apply 0 mV, the meter should read room temperature.
10. This completes the calibration of all the thermocouple ranges.
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RTD Input Internal Calibration (ICAL)
1. Set the Type selector switch in the RTD position and the Range switch in the 10 position. Using 3
wires connect a precision calibrator resistance output to the meter.
2. In the Setup menu select the input: RTD – 100 Pt – A385.
3. Access the Advanced Features menu and scroll to the ICAL menu and press Enter.
4. The meter displays the message (10 lo). Apply 9.035 ohm and press Enter. The display flashes for a
moment while the meter is accepting the low input signal for the 10-ohm RTD. After the display stops
flashing, press Enter again.
5. The meter displays the message (10 Hi). Apply 18.032 ohm and press Enter. The display flashes for
a moment while the meter is accepting the high input signal for the 10-ohm RTD. After the display
stops flashing, press Enter again.
6. The meter displays the message (100 lo). Do NOT press Enter.
7. Move the Range selector switch to the 100 position. Apply 100 ohm and press Enter. The display
flashes for a moment while the meter is accepting the low input signal for the 100-ohm RTD.
8. The meter displays the message (100 Hi). Apply 320.12 ohm and press Enter. The display flashes
for a moment while the meter is accepting the high input signal for the 100-ohm RTD.
9. At the end of the calibration process the meter should read 1148.0F with the 320.12-ohm input
applied.
10. This completes the calibration of all the RTD ranges.
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Button Symbol
Description
or
Press to enter or exit Programming Mode, view
settings, or exit max/min readings
or
Press to reset max readings or other
parameter/function assigned through the User menu
or
Press to display max/min readings or other
parameter/function assigned through the User menu
or
Press to acknowledge relays or other
parameters/function assigned through the User menu
WARNING
Take caution when cleaning the window
glass as it may result in unintentional SafeTouch button events. Only clean the ProtEXMAX when the system is safely shut down,
and inspect the ProtEX-MAX for proper configuration prior to system restart.
Meter Operation
The meter is capable of accepting a variety of thermocouples and RTDs.
The dual-line display can be customized by the user to operate in such a way as to satisfy a specific
application. Typically, display line 1 is used for the process variable; while line 2 is used engineering units,
custom legend, or set point indication.
Additionally, the meter can be set up to display the thermocouple or RTD input on line 1 and the Modbus
input on line 2. The relays and analog output can be programmed to operate from the Modbus PV input.
Front Buttons Operation
SafeTouch® 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 DISABLE on the switch labeled NO-CONTACT
BUTTONS located on the connector board.
To actuate a button, press one finger to the glass directly over the marked button area. Then retract finger
more than three inches from the glass before pressing the next button. When the cover is removed, the
four mechanical buttons located next to the sensors are used. The sensors are disabled when a mechanical button is pressed and will automatically be re-enabled after 60 seconds of inactivity.
The SafeTouch Buttons are designed to filter normal levels of ambient interference and to protect against
false triggering, however, it is recommended that the SafeTouch Buttons be disabled (slide switch to
LOCK) if there is an infrared interference source in line-of-sight to the display.
The SafeTouch Buttons are configured by default to duplicate the function of the front panel mechanical
pushbuttons associated with the integrated meter. The symbols by each SafeTouch button correspond to
a mechanical button as shown in the above table.
SafeTouch Button Tips:
• To the extent possible, install the display facing away from sunlight, windows, reflective objects and
any sources of infrared interference.
• Keep the glass window clean.
• Tighten the cover securely.
• Use a password to prevent tampering.
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F4 Operation
A digital input, F4, is standard on the meter. This digital input is programmed identically to function keys
F1, F2, and F3. The input is triggered with a contact closure to COM, or with an active low signal. During
operation, F4 operates according to the way it has been programmed in the Advanced Features – User
menu.
Maximum/Minimum Readings
The max & min readings (peak & valley) reached by the process can be displayed either continuously or
momentary:
1. Display briefly by assigning to the F1-F3 function keys or to the digital inputs in the User menu.
2. Display continuously by assigning either display to max/min through the Display menu.
Any of the F1-F3 function keys (buttons) and the digital inputs can be programmed to reset the max & min
readings. The meters are set at the factory to display the max reading by pressing the Up arrow/F2 button
and to use the Right arrow/F1 button to access the Reset menu.
To display max reading using function key with factory defaults:
1. Press Up arrow/F2 button to display maximum reading since the last reset/power-up.
2. To reset max/min press Right arrow/F1 button to access the Reset menu. The max & min displays
are reset to actual values.
3. Press Menu to exit max/min display reading.
To display max/min readings continuously:
Assign either display to Max (d Hi), Min (d Lo), or toggle between Max and Min (d HL) every 10
seconds.
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Troubleshooting
The rugged design and the user-friendly interface of the meter should make it unusual for the installer or
operator to refer to this section of the manual. However, due to the many features and functions of the
meter, it’s possible that the setup of the meter does not agree with what an operator expects to see.
If the meter is not working as expected, refer to the Diagnostics menu and recommendations below.
Diagnostics Menu (diag)
The Diagnostics menu is located in the Advanced Features menu, to access Diagnostics menu see
Advanced Features Menu, page 40.
This menu allows the user to test the functionality of all the meter LEDs, check the meter’s software and
version information, and erase the MeterView Pro software installation files from the meter. Press the
Enter button to view the settings and the Menu button to exit at any time.
For a description of the diagnostic messages, see Advanced Features Menu & Display Messages, page
40.
Determining Software Version
To determine the software version of a meter:
1. Go to the Diagnostics menu (diAG) and press Enter button.
2. Press Up arrow button and scroll to Information menu (Info).
3. Press Enter to access the software number (SFT) and version (UER) information. Write down the
information as it is displayed. Continue pressing Enter until all the information is displayed.
4. The meter returns to Run Mode after displaying all the settings.
Reset Meter to Factory Defaults
When the parameters have been changed in a way that is difficult to determine what’s happening, it might
be better to start the setup process from the factory defaults.
Instructions to load factory defaults:
1. Enter the Advanced Features menu. See Advanced Features Menu, page 40.
2. Press Up arrow to go to Diagnostics menu
3. Press and hold Right arrow for three seconds, press
Enter when display flashes reset.
Note: If Enter is not pressed within three seconds, the display
returns to the Diagnostics menu.
4. The meter goes through an initialization sequence (similar as on power-up), and loads the factory
default settings.
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Parameter
Display
Default Setting
Input type
Input
Type J TC
Temp scale
F or C
°F
Adjust
Adjust
0.0
RTD total
rtdtot
1
Filter
filter
70
Bypass
bypass
0.2
Round
Round
1
Decimal point
ddddoF
No decimal
Display line 1
Line 1
PV: Temperature
Display line 2
Line 2
Eng units: Temp
Display intensity
d-Inty
8
Relay 1 action
Act 1
Automatic
Relay 1 set point
Set 1
100
Relay 1 reset point
RSt 1
50
Relay 2 action
Act 2
Automatic
Relay 2 set point
Set 2
200
Relay 2 reset point
RSt 2
150
Relay 3 action
Act 3
Automatic
Relay 3 set point
Set 3
300
Relay 3 reset point
RSt 3
250
Relay 4 action
Act 4
Automatic
Relay 4 set point
Set 4
400
Relay 4 reset point
RSt 4
350
Fail-safe relay 1
Fls 1
Off
Fail-safe relay 2
Fls 2
Off
Fail-safe relay 3
Fls 3
Off
Fail-safe relay 4
Fls 4
Off
On delay relay 1
On 1
0.0 sec
Off delay relay 1
Off 1
0.0 sec
On delay relay 2
On 2
0.0 sec
Off delay relay 2
Off 2
0.0 sec
On delay relay 3
On 3
0.0 sec
Off delay relay 3
Off 3
0.0 sec
On delay relay 4
On 4
0.0 sec
Off delay relay 4
Off 4
0.0 sec
Input break relay 1
ignore
Ignore
Parameter
Display
Default Setting
Input break relay 2
ignore
Ignore
Input break relay 3
ignore
Ignore
Input break relay 4
ignore
Ignore
Display 1 analog
out
Dis 1
0.0
Output 1 value
Out 1
4.000 mA
Display 2 analog
out
Dis 2
2000.0
Output 2 value
Out 2
20.000 mA
Source analog
output
Source
Process Variable
Overrange output
O-rang
21.000 mA
Underrange output
u-rang
3.000 mA
Input break output
break
1.000 mA
Maximum output
mAx
23.000 mA
Minimum output
min
1.000 mA
Slave ID
SlavId
247
Baud rate
baud
9600
Transmit delay
Tr dly
10 ms
Parity
Parity
Even
Byte-to-byte
timeout
t-byt
010 (0.1 sec)
F1 function key
F1
Reset max & min
F2 function key
F2
Line 1: Max (Hi)
F3 function key
F3
Acknowledge relays
F4 function
F4
Acknowledge relays
Digital input 1
dI 1
Menu
Digital input 2
dI 2
Right arrow
Digital input 3
dI 3
Up arrow
Digital input 4
dI 4
Enter
Digital output 1
dO 1
Alarm 1
Digital output 2
dO 2
Alarm 2
Digital output 3
dO 3
Alarm 3
Digital output 4
dO 4
Alarm 4
Password 1
Pass 1
000000 (unlocked)
Password 2
Pass 2
000000 (unlocked)
Password 3
Pass 3
000000 (unlocked)
Factory Defaults & User Settings
The following table shows the factory setting for most of the programmable parameters on the meter.
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Symptom
Check/Action
SafeTouch buttons do not respond
If mechanical button was pushed. The SafeTouch buttons will
be re-enabled automatically 60 seconds after the last button
push.
If slide switch on connector board is in DISABLE position,
switch to ENABLE.
Strong direct sunlight may interfere with SafeTouch button
operation. It is recommended to operate the buttons by
standing so as to block direct sunlight.
Serial Communications Power LED
Indicator is off
1. Check modular cable connection
Check power to the device
If only the TX (or DATA IN) data status
LED is flashing when serial
communications attempted
1. Check serial cable
2. Check protocol selected on device
3. Check instrument address & baud rate
Check program address & baud rate
If both data status LEDs (TX and RX)
are off when trying to communicate
Remove all unnecessary cables and instruments from the bus.
Try getting the system to work with only one device (to ease
troubleshooting) and then expand the system one device at a
time.
Communications slow
Increase the baud rate
Random communication errors
1. Increase the TX delay time
Decrease the baud rate
Power LED is off
1. Check modular cable connection
Check power to instrument
No display at all
Check power at power connector
Not able to change setup or
programming, Locd is displayed
Meter is password-protected, enter correct six-digit
password to unlock
Meter displays error message during
calibration (Error)
Check:
1. Signal connections
2. Type and range selector switches
3. Input selected in Setup menu
Meter displays
1. 99999
2. -9999
Check:
1. Input selected in Setup menu
2. Corresponding signal at Signal connector
Display is unstable
Check:
1. Input signal stability and value
2. Filter and bypass values (increase)
Display response is too slow
Check filter and bypass values
Display reading is not accurate
Check:
1. TC wire type
2. Input selection in Setup menu
Display does not respond to input
changes, reading a fixed number
Check:
1. Display assignment, it might be displaying max, min, or
set point.
Display alternates between
1. Hi and a number
2. Lo and a number
Press Menu to exit max/min display readings.
Relay operation is reversed
Check:
1. Fail-safe in Setup menu
2. Wiring of relay contacts
Troubleshooting Tips
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Symptom
Check/Action
Relay and status LED do not
respond to signal
Check:
1. Relay action in Setup menu
2. Set and reset points
Flashing relay status LEDs
Relays in manual control mode or relay interlock switches
opened.
Meter not communicating with
application programs
Check:
1. Serial adapter and cable
2. Serial settings
3. Meter address and baud rate
If the display locks up or the meter
does not respond at all
Cycle the power to reboot the
microprocessor.
Other symptoms not described
above
Call Technical Support for
assistance.
Note: Certain sequences of events can cause unexpected results. To solve these issues, it is best to start
WARNINGS
• 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.
• 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.
fresh from factory defaults and map changes ahead of time, rather than at random.
Service
If the enclosure is sound and undamaged, then only the internal electronics housing will need to be returned to the factory for service. Contact the factory for RMA number and return instructions.
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ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
Figure 23: Enclosure Dimensions – Front View
Figure 24: Enclosure Dimensions – Side Cross Section View
Mounting Dimensions
All units: inches (mm)
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This Page Intentionally Left Blank
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Page 57
EU Declaration of Conformity
Issued in accordance with ISO/IEC 17050-1:2004 and ATEX Directive 2014/34/EU.
We,
Precision Digital Corporation
233 South Street
Hopkinton, MA 01748 USA
as the manufacturer, declare under our sole responsibility that the product(s),
Model PD8 ProtEX-MAX Series
to which this declaration relates, is in conformity with the European Union Directives shown below:
2014/35/EU Low Voltage Directive
2014/34/EU ATEX Directive
2014/30/EU EMC Directive
2011/65/EU RoHS Directive
This conformity is based on compliance with the application of harmonized or applicable technical standards and, when applicable or required, a European Union notified body certification.
Standards:
EN 55022:2007 EN 61000-6-2:2005 EN 60079-0:2009 EN 61000-6-4:2007
EN 60079-1:2007 EN 61010-1:2001 EN 60079-31:2008 EN 61326:2006
The standards EN 55022:2007, EN 60079-0:2009, EN 60079-1:2007, EN 60079-31:2008, EN 61000-64:2007, EN 61010-1:2001, and EN 61326:2006 are no longer harmonized. The requirements of these
standards have been checked against the harmonized standard EN 55022:2010, EN 600790:2012+A11:2013, EN 60079-1:2014, EN 60079-31:2014, EN 61000-6-4:2007+A1:2011, EN 610101:2010, and EN 61326:2013 and there were no major technical changes affecting the latest technical
knowledge for the products listed above.
EC Type Examination Certificate: Sira 12ATEX1182
Product Markings: II 2 G D
Ex d IIC T* Gb
Ex tb IIIC T90°C Db IP68
Tamb = -40°C to +*°C (*T5 = 65°C, *T6 = 60°C)
ATEX Notified Body for EC Type Examination Certificate: Sira Certification Service, NB 0518
Unit 6, Hawarden Industrial Park
Hawarden, Deeside, CH5 3US, UK
ATEX Quality Assurance Notification No.: SIRA 10 ATEX M462
ATEX Notified Body for Quality Assurance: Sira Certification Service, NB 0518
Unit 6, Hawarden Industrial Park
Hawarden, Deeside, CH5 3US, UK
Signed for and on behalf of Precision Digital Corporation:
Name: Jeffrey Peters
Company: Precision Digital Corporation
Title: President
Date: 02/12/2018 Document No: DoC PD8 {021218}
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PRECISION DIGITAL CORPORATION
LIM8-7000_C
SFT063 Ver 4.000 & up
02/18
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