Precision Digital PD765, PD765-6R0-00, PD765-7R0-00, PD765-6R0-10, PD765-6R2-00 User Manual

TRIDENT & TRIDENT X2

MODEL PD765

Instruction Manual

• Accepts Current, Voltage, TC, & RTD Inputs

• 4 Digit Display, 0.56" (14 mm) or 1.20" (31 mm)

• Linear or Square Root with Low-Flow Cutoff

• Operating temperature range of between -40°C and 65°C

• Maximum/Minimum Display

• Type 4X, NEMA 4X, IP65 Front

• Universal Power Supply 85-265 VAC

• 12-36 VDC/12-24 VAC Power Option

• Two Relays and 4-20 mA Output Option

• 24 VDC Transmitter Power Supply Options

• USB, RS-232, & RS-485

Serial Communication Adapters Options

• Free Modbus

• Copy Meter Settings to Other Meters

• Free MeterView

®

RTU Protocol

®

Software - Configuration & Data Acquisition

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]

www.predig.com

Trident Model PD765 Universal Input Meter Instruction Manual

Disclaimer

The information contained in this document is subject to change
without notice. Precision Digital makes no representations or
warranties with respect to the contents hereof, and specifically
disclaims any implied warranties of merchantability or fitness for a
particular purpose.

Registered Trademarks

MeterView® is a registered trademark of Precision Digital
Corporation, Modbus
Automation Inc. All other trademarks mentioned in this document are
the property of their respective owners.

© 2011-2016 Precision Digital Corporation. All rights reserved.

®

is a registered trademark of Schneider

Visit tvm.predig.com

For an Interactive

Virtual Meter Demo!

INTRODUCTION

The Trident is a multipurpose, easy to use digital panel meter. It accepts
current, voltage, thermocouple, and RTD signals. The four front panel
buttons make the setup and programming an easy task.

The isolated 24 VDC transmitter power (optional) can be used to power
the input transmitter, the 4-20 mA output, or other devices.

The two relays (optional) can be used for alarm indication or process control
applications, such as pump alternation control.

Two relays and a 4-20 mA output are available together in the same meter.
The 4-20 mA isolated output and Modbus

options make the Trident an excellent addition to any system.

®

RTU serial communication

2

Trident Model PD765 Universal Input Meter Instruction Manual

ORDERING INFORMATION

Trident

85-265 VAC
Model

PD765-6R0-00 PD765-7R0-00 No options

PD765-6R0-10 24 V transmitter supply

PD765-6R2-00 PD765-7R2-00 2 relays

PD765-6R2-10 2 relays & 24 V transmitter supply

PD765-6R3-00 PD765-7R3-00 4-20 mA output

PD765-6R3-10 4-20 mA output & 24 V supply

PD765-6R3-20 4-20 mA output & dual 24 V supplies

PD765-7R5-00 2 relays & 4-20 mA output

PD765-6R5-10 2 relays, 4-20 mA output, & 24 V supply

Trident X2

85-265 VAC
Model

PD765-6X0-00 PD765-7X0-00 No options

PD765-6X0-10 24 V transmitter supply

PD765-6X2-00 PD765-7X2-00 2 relays

PD765-6X2-10 2 relays & 24 V transmitter supply

PD765-6X3-00 PD765-7X3-00 4-20 mA output

PD765-6X3-10 4-20 mA output & 24 V supply

PD765-6X3-20 4-20 mA output & dual 24 V supplies

PD765-7X5-00 2 relays & 4-20 mA output

PD765-6X5-10 2 relays, 4-20 mA output, & 24 V supply

Accessories

Model Description

PDA7232 RS-232 serial adapter with PDA7420 included

PDA7420 Trident meter copy cable, 7' (2.1 m)

PDA7422 RS-485 serial adapter with PDA7420 included

PDA7485-I RS-232 to RS-485 isolated converter

PDA7485-N RS-232 to RS-485 non-isolated converter

PDA8485-I USB to RS-422/485 isolated converter

PDA8485-N USB to RS-422/485 non-isolated converter

PDA8006 USB Serial Adapter

MeterView® Free MeterView® software download at www.predig.com

Enclosures NEMA 4 & explosion-proof enclosures – See Web site.

12-36 VDC
Model

12-36 VDC
Model

Options Installed

Options Installed

3

Trident Model PD765 Universal Input Meter Instruction Manual

Table of Contents

INTRODUCTION ------------------------------------------------------------ 2
ORDERING INFORMATION --------------------------------------------- 3
SPECIFICATIONS ---------------------------------------------------------- 7

General ------------------------------------------------------------------------------- 7
Process Input ---------------------------------------------------------------------- 8
Temperature Inputs -------------------------------------------------------------- 9
Relays Option -------------------------------------------------------------------- 10
Isolated 4-20 mA Transmitter Output ------------------------------------ 11
Serial Communications ------------------------------------------------------- 11

COMPLIANCE INFORMATION ---------------------------------------- 12

Safety ------------------------------------------------------------------------------- 12
Electromagnetic Compatibility --------------------------------------------- 12

SAFETY INFORMATION ------------------------------------------------ 13
INSTALLATION ------------------------------------------------------------ 14

Unpacking ------------------------------------------------------------------------- 14
Panel Mounting ------------------------------------------------------------------ 14
Connections ---------------------------------------------------------------------- 15

Connector Labeling ---------------------------------------------------------- 15
Power Connections ---------------------------------------------------------- 16
Signal Connections ---------------------------------------------------------- 16
Serial Communication ------------------------------------------------------- 20
Relays and 24 V Output Connections ----------------------------------- 20
Switching Inductive Loads -------------------------------------------------- 20
4-20 mA Output & Input Signal Connections -------------------------- 22

SETUP AND PROGRAMMING ---------------------------------------- 23

Front Panel Buttons and Status LED Indicators --------------------- 24
Display Functions and Messages ----------------------------------------- 25
Main Menu ------------------------------------------------------------------------ 28
Setting Numeric Values ------------------------------------------------------ 28
Setting Up the Meter (setu) ------------------------------------------------- 29

Setting the Input Signal (inpt) -------------------------------------------- 30
Setting the Decimal Point (dc.pt) ----------------------------------------- 31
Setting the Temperature Scale (F C) ---------------------------------- 31
Programming the Meter (prog) ------------------------------------------- 32
Scaling the Meter (scal) ---------------------------------------------------- 33
Calibrating the Meter (Cal) ------------------------------------------------- 35
Recalibrating Temperature Inputs (Cal) -------------------------------- 35

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Trident Model PD765 Universal Input Meter Instruction Manual

Recalibrating Process Inputs (ICal) ------------------------------------- 36
Setting the Relay Operation (rely) -------------------------------------- 37
Relay and Alarm Operation ------------------------------------------------ 41
Pump Alternation Control Operation ------------------------------------- 46
Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 47
Program the Sensor Break Output Value (SEbr) --------------------- 48
Analog Output when Display is Out of Range ------------------------- 48

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

Locking the Meter ------------------------------------------------------------ 49
Unlocking the Meter ---------------------------------------------------------- 49

Advanced Features Menu ---------------------------------------------------- 50

Advanced Features Menu & Display Messages ---------------------- 51
Offset Adjustment (Adj) ----------------------------------------------------- 53
Noise Filter (fltr) ------------------------------------------------------------ 53
Noise Filter Bypass (byps) ------------------------------------------------- 54
Serial Communications (serl) -------------------------------------------- 54
Protocol Selection Menu (Prot) ------------------------------------------ 54
Select Menu (SElc) ---------------------------------------------------------- 55
Linear or Square Root Function (linr or Sqrt) ---------------------- 55
Low-Flow Cutoff (cutF) ----------------------------------------------------- 56
Display Intensity (inty) ----------------------------------------------------- 56
Meter Copy Function (Copy) ----------------------------------------------- 57
Internal Calibration (ICal) -------------------------------------------------- 59

OPERATION ---------------------------------------------------------------- 62

Front Panel Buttons Operation -------------------------------------------- 62
Maximum/Minimum Readings ---------------------------------------------- 63

MOUNTING DIMENSIONS ---------------------------------------------- 64
TROUBLESHOOTING ---------------------------------------------------- 65

Diagnostics Menu (diag) ----------------------------------------------------- 65

Determining Software Version -------------------------------------------- 65

Reset Meter to Factory Defaults ------------------------------------------- 66

Factory Defaults & User Settings ----------------------------------------- 67

Troubleshooting Tips --------------------------------------------------------- 69

QUICK INTERFACE REFERENCE GUIDE ------------------------- 70
EU DECLARATION OF CONFORMITY ----------------------------- 73

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Trident Model PD765 Universal Input Meter Instruction Manual

Table of Figures

Figure 1. Panel Cutout and Mounting ............................................... 14

Figure 2. Labeling for 2 Relay, Analog Out, & 24 V Supply Model . 15

Figure 3. Labeling for Analog Out & Two 24 V Supply Model ........ 15

Figure 4. Power Connections ............................................................ 16

Figure 5. Transmitter Powered by Ext. Supply or Self-Powered .... 16

Figure 6. Transmitters Powered by Internal Supply (Optional) ...... 17

Figure 7. Voltage Input Connections ................................................ 17

Figure 8. Thermocouple Input Connections .................................... 18

Figure 9. Three-Wire RTD Input Connections .................................. 18

Figure 10. Two-Wire RTD Input Connections ................................... 19

Figure 11. Four-Wire RTD Input Connections .................................. 19

Figure 12. Relay & 24 V Output Connections ................................... 20

Figure 13. AC and DC Loads Protection ........................................... 20

Figure 14. Low Voltage DC Loads Protection .................................. 21

Figure 15. 4-20 mA Output & Input Signal Powered by Meter ........ 22

Figure 16. 4-20 mA Output Powered Externally ............................... 22

Figure 17. Meter Copy Connection ................................................... 57

Figure 18. Meter Dimensions – Side View ........................................ 64

Figure 19. Case Dimensions – Top View .......................................... 64

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Trident Model PD765 Universal Input Meter Instruction Manual

SPECIFICATIONS

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

General

DISPLAY Trident: 0.56" (14 mm), Trident X2: 1.20" (31 mm),

DISPLAY INTENSITY Eight intensity levels

DISPLAY
UPDATE RATE

OVERRANGE

UNDERRANGE

PROGRAMMING
METHODS

NOISE FILTER Programmable from 2 to 199 (0 will disable filter)

RECALIBRATION All ranges are calibrated at the factory. Recalibration is

MAX/MIN
DISPLAY

PASSWORD Programmable password restricts modification of settings.

NON-VOLATILE
MEMORY

POWER
OPTIONS

FUSE Required fuse: UL Recognized, 5 A max, slow blow

ISOLATED
TRANSMITTER
POWER SUPPLY

NORMAL MODE
REJECTION

ISOLATION 4 kV input/output-to-power line

OVERVOLTAGE
CATEGORY

Four digits (-1999 to 9999), automatic lead zero blanking.

Process/RTD: 3.7-5/second
Thermocouple: 1.8-2.5/second

Display flashes

Display flashes

Four front panel buttons, PC and MeterView® software, or
cloning using Copy function

recommended at least every 12 months.

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

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

85-265 VAC, 50/60 Hz
90-265 VDC, 20 W max
or 12-36 VDC, 12-24 VAC, 6 W max
See table for power consumption
(*X: number depends on option)

Up to 6 meters may share one 5 A fuse

One or two transmitter power supplies (Optional)
P or P1: 24 VDC ± 10% @ 200 mA max. (-1 option)
P1 & P2: 24 VDC ± 10% @ 200 mA & 40 mA max. (-2 option)

64 dB at 50/60 Hz

500 V input-to-output or output-to-P1/P2 supplies

-6R5 & -6X5 models only: 100 V output-to-24 VDC supply

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

9999

-1999

Model Watts

PD765-6RX-0* 8

PD765-6RX-1, 2* 20

PD765-7RX-0* 6

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Trident Model PD765 Universal Input Meter Instruction Manual

ENVIRONMENTAL Operating temperature range: -40 to 65°C

CONNECTIONS Removable screw terminal blocks accept 12 to 22 AWG

ENCLOSURE 1/8 DIN, high impact plastic, UL 94V-0, color: gray

MOUNTING 1/8 DIN panel cutout required. Two panel mounting bracket

TIGHTENING
TORQUE

OVERALL
DIMENSIONS

WEIGHT 9.5 oz. (269 g) (including options)

WARRANTY 3 years parts & labor

Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing

wire, RJ11 for serial communication adapters

assemblies provided

Screw terminal connectors: 5 lb-in (0.56 Nm)

2.45" x 4.68" x 4.19" (62 mm x 119 mm x 106 mm)
(H x W x D)

Process Input

INPUTS Field selectable:

ACCURACY ±0.05% of span ±1 count, square root: 10-100% FS

FUNCTION Linear or square root

LOW-FLOW
CUTOFF

TEMPERATURE
DRIFT

DECIMAL POINT Up to three decimal places for process inputs:

CALIBRATION
RANGE

INPUT
IMPEDANCE

INPUT
OVERLOAD

±20 mADC (0-20, 4-20 mA) and ±10 VDC (0-5, 1-5, 0-10 V)

0-9999 (0 disables cutoff function)

0 to 65°C ambient -40 to 0°C ambient

Current: ±0.20% FS (50 PPM/°C)
Voltage: ±0.02% FS (1.7 PPM/°C)

Current: ±0.80% FS
Voltage: ±0.06% FS

d.ddd, dd.dd, ddd.d, or dddd

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

Input Range Minimum Span

4-20 mA 0.40 mA

±10 V

Voltage ranges: greater than 1 MΩ
Current ranges: 50 - 100 Ω

Current input protected by resettable fuse.
Fuse resets automatically after fault is removed.

Input 1 & Input 2

0.20 V

(depending on resettable fuse impedance)

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Trident Model PD765 Universal Input Meter Instruction Manual

Temperature Inputs

INPUTS Field selectable: type J, K, T, or E thermocouples;

RESOLUTION

ACCURACY

Input Type Range Accuracy

Type J

Type K

Type T

Type T

0.1° Res

Type E

100 Ω RTD

COLD
JUNCTION
REFERENCE

OFFSET
ADJUSTMENT

INPUT
IMPEDANCE

SENSOR BREAK
DETECTION

100 Ω platinum RTD (0.00385 or 0.00392 curve)

1° or 0.1° for all RTD inputs. 1° for all thermocouples.
1° or 0.1° for Type T thermocouple

(0 - 65 C)

-58° to 1382° F

-50° to 750°C

-58° to 2300° F

-50° to 1260°C

-292° to 700° F

-180° to 371°C

-199.9° to 700.0° F

-180.0° to 371.0°C

-58° to 1578° F

-50° to 870°C

-328° to 1382°F

-200° to 750°C

Automatic, fixed, no user calibration needed

Programmable to ±19.9°. This parameter allows the user to
apply an offset value to the temperature being displayed.

Greater than 100 kΩ

Open TC or RTD sensor indicated by display flashing oPEn.
All relays and alarm status LEDs go to alarm or non-alarm
state, programmable for each relay individually.
Analog output goes to the programmed sensor break value.

±2°F
±1°C

±2°F
±1°C

±2°F
±1°C

±1.8°F
±1.0°C

±2°F
±1°C

±1°F
±1°C

Accuracy
(-40 - 0 C)

±5°F
±3°C

±4°F
±2°C

±13°F
±7°C

±13°F
±7.2°C

±11°F
±6°C

±5°F
±3°C

9

Trident Model PD765 Universal Input Meter Instruction Manual

Relays Option

RATING 2 SPDT (Form C); rated 3 A @ 30 VDC or 3 A @ 250 VAC

ELECTRICAL
NOISE
SUPPRESSION

DEADBAND 0-100% of full scale, user selectable

HIGH OR LOW
ALARM

RELAY
OPERATION

RELAY RESET User selectable via front panel buttons or PC

Automatic reset only (non-latching)

TIME DELAY 0 to 199 seconds, on and off delays

FAIL-SAFE
OPERATION

AUTO
INITIALIZATION

resistive load; 1/14 HP @ 125/250 VAC (50 watts) for induc­tive loads

A suppressor (snubber) should be connected to each relay
contact switching inductive loads to prevent disruption to the
microprocessor’s operation.
Recommended suppressor value: 0.01 µF/470 Ω, 250 VAC
(PDX6901).

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

Automatic (non-latching)
Latching
Pump alternation control

Automatic + manual reset at any time (non-latching)
Manual reset only, at any time (latching)
Manual reset only after alarm condition has cleared (latching)
Automatic reset: Relays will automatically reset when the in-

put passes the reset point.
Manual reset: Front panel ACK button. Pressing ACK re-

sets all manually resettable relays.

Programmable and independent for each relay

Programmable
Independent for each relay

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

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

10

Trident Model PD765 Universal Input Meter Instruction Manual

Isolated 4-20 mA Transmitter Output

OUTPUT RANGE 1.00 to 23.00 mA typical

CALIBRATION Factory calibrated for 4-20 mA

SCALING RANGE 0.00 to 23.99 mA for any display range,

ACCURACY ± 0.1% FS ± 0.004 mA

TEMPERATURE
DRIFT

ISOLATED
TRANSMITTER
POWER SUPPLY

EXTERNAL LOOP
POWER SUPPLY

OUTPUT LOOP
RESISTANCE

24 VDC

35 VDC (external)

see output range above

0.4 uA/°C from -40 to 65°C ambient

Note: Analog output drift is separate from input drift.

One or two transmitter power supplies (Optional)
P1: 24 VDC ± 10% @ 200 mA max. (-1 option)
P1 & P2: 24 VDC ± 10% @ 200 mA & 40 mA max. (-2 option)

35 VDC maximum

Power supply Minimum Maximum

10 Ω 700 Ω

100 Ω 1200 Ω

Serial Communications

METER
ADDRESS

BAUD RATE 300 – 19,200 bps

TRANSMIT
TIME DELAY

DATA 8 bit (1 start bit, 1 stop bit)

PARITY None (1 or 2 stop bits), even, or odd

BYTE-TO-BYTE
TIMEOUT

TURN AROUND
DELAY

PDC protocol: 0 - 99
Modbus protocol: 1 - 247

Programmable between 0 and 199 ms

(Modbus only; PDC protocol does not use parity)

0.01 – 2.54 sec (Modbus only)

Less than 2 ms (fixed)

Refer to PDC and Modbus Serial Communication Protocol manuals for
details. These can be downloaded from: www.predig.com.

11

Trident Model PD765 Universal Input Meter Instruction Manual

COMPLIANCE INFORMATION

Safety

UL LISTED USA and Canada

UL FILE NUMBER E160849

FRONT PANEL UL Type 4X, NEMA 4X, IP65; panel gasket provided

LOW VOLTAGE
DIRECTIVE

Electromagnetic Compatibility

EMISSIONS

Radiated
Emissions

AC Mains
Conducted
Emissions

IMMUNITY

RFI - Amplitude
Modulated

Electrical Fast
Transients

Electrostatic
Discharge

RFI - Conducted
AC Surge
Surge
Power-Frequency

Magnetic Field
Voltage Dips

Voltage
Interruptions

UL 508 Industrial Control Equipment

EN 61010-1:2010
Safety requirements for measurement, control, and la­boratory use

EN 55011:2009 + A1:2010
Group 1 Class A ISM emissions requirements

Class A

Class A

EN 61326-1:2013
Measurement, control, and laboratory equipment

EN 61000-6-2:2005
EMC heavy industrial generic immunity standard

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)

±2kV AC mains, ±1kV other

±4kV contact, ±8kV air

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

±2kV Common, ±1kV Differential

1KV (CM)

30 A/m 70%V for 0.5 period

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

<5%V for 250 periods

12

Trident Model PD765 Universal Input Meter Instruction Manual
Note:

Testing was conducted on Trident 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

SAFETY INFORMATION

!

CAUTION: Read complete

instructions prior to instal­lation and operation of the
meter.

WARNING
Hazardous voltages exist within enclosure. Installa­tion and service should be performed only by
trained service personnel.

13

WARNING: Risk of
electric shock.

Trident Model PD765 Universal Input Meter Instruction Manual

INSTALLATION

There is no need to remove the meter from its case to com­plete the installation, wiring, and setup of the meter.

Unpacking

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

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

Panel Mounting

• Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm
x 45 mm). Refer to MOUNTING DIMENSIONS, page 64 for more
details.

• Clearance: allow at least 4" (102 mm) behind the panel for wiring.

• Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).

Recommended minimum panel thickness to maintain Type 4X
rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic panel.

• Remove the two mounting brackets provided with the meter (back-off
the two screws so that there is ¼" (6.4 mm) or less through the
bracket. Slide the bracket toward the front of the case and remove).

• Insert meter into the panel cutout.

• Install mounting brackets and tighten the screws against the panel.

To achieve a proper seal, tighten the mounting bracket screws
evenly until meter is snug to the panel along its short side. DO NOT
OVER TIGHTEN, as the rear of the panel may be damaged.

Figure 1. Panel Cutout and Mounting

14

Trident Model PD765 Universal Input Meter Instruction Manual

Connections

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

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

Connector Labeling

The connectors label, affixed to the meter, shows the location of all con­nectors available with requested configuration. It also identifies the loca­tion of the RTD/TC selector switch. The below two images are common
connector configurations for the PD765. Note that the connector in the
upper left of the diagram has two different configurations based on the
model.

RELAY2 RELAY1

4

6 5

3

2 1

COM NONO NC NC COM

RTD

TC

EXC T+ V+ mA+ COM

3 41 2 5

SIGNAL

RTD

SWITC H

24V OUT

2 1

P+ P-

1 2 3 4 5 6

TC

SERIAL

mA OUT

6 5

I

I

-

+

POWER

2 1

+

DW2206

Figure 2. Labeling for 2 Relay, Analog Out, & 24 V Supply Model

Figure 3. Labeling for Analog Out & Two 24 V Supply Model

15

Trident Model PD765 Universal Input Meter Instruction Manual

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.

POWER CONNECTOR

12

+-

AC or DC

Required External Fuse:

5 A max, Slow Blow

Figure 4. Power Connections

Signal Connections

Signal connections are made to a five-terminal connector labeled
SIGNAL on Figure 2. The COM (common) terminal is the return for all
types of input signals.

Current and Voltage Connections

The following figures show examples for current and voltage connections.
There are no switches or jumpers to set up for current and voltage inputs.

Setup and programming is performed through the front panel buttons.

POWER

Figure 5. Transmitter Powered by Ext. Supply or Self-Powered

16

Trident Model PD765 Universal Input Meter Instruction Manual

Figure 6. Transmitters Powered by Internal Supply (Optional)

The current input is protected against current overload by a resettable
fuse. The display may or may not show a fault condition depending on
the nature of the overload.

The fuse limits the current to a safe level when it detects a fault condi­tion, and automatically resets itself when the fault condition is removed.

Figure 7. Voltage Input Connections

The meter is capable of accepting any voltage from -10 VDC to +10 VDC.

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Trident Model PD765 Universal Input Meter Instruction Manual

Thermocouple and RTD Connections

The following figures show examples for thermocouple and RTD con­nections.

The RTD/TC selector switch must be set to the proper position for the
meter to accept the selected temperature input.

The input type is selected using the Setup menu.
Selected thermocouple input must correspond to thermocouple sensor

and wire type used.

Figure 8. Thermocouple Input Connections

Figure 9. Three-Wire RTD Input Connections

The meter accepts two, three, or four-wire RTDs. The three-wire RTD
connection has built-in lead wire compensation.

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Trident Model PD765 Universal Input Meter Instruction Manual

Figure 10. Two-Wire RTD Input Connections

Lead wire compensation for two-wire RTDs can be applied using the
Adjust menu. See Offset Adjustment (Adj), page 53.

Figure 11. Four-Wire RTD Input Connections

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
provide accurate readings even with long leads.

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Trident Model PD765 Universal Input Meter Instruction Manual

Serial Communication

Serial communication connection is made to an RJ11 connector labeled
SERIAL on Figure 2. Use PDA7232 for RS-232 interfacing.

Use PDA7422 for RS-485 interfacing.
Use PDA7420 for meter-to-meter interfacing for cloning purposes (i.e.

copying programmed settings from one meter to other meters).

Relays and 24 V Output Connections

Relay connections are made to a six-terminal connector labeled
RELAY1, RELAY2 on Figure 2. The COM (common) terminals of the re­lays should not be confused with the COM (common) terminal of the
SIGNAL connector. The 24 VDC output is available at the connector la­beled 24V OUT, next to the relays connector.

Figure 12. Relay & 24 V Output 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:

C

C

R

R

Figure 13. AC and DC Loads Protection

20

Trident Model PD765 Universal Input Meter Instruction Manual

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. Inductive relay rating is 1/14 HP (50 W) at 115/230 VAC

2. Use capacitors rated for 250 VAC.

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

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

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

Figure 14. 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.

21

Trident Model PD765 Universal Input Meter Instruction Manual

4-20 mA Output & Input Signal Connections

Connections for the 4-20 mA transmitter output are made to the con­nector terminals labeled “mA OUT, I-, I+”. The 4-20 mA output may be
powered from an internal power supply (optional) or from an external
power supply.

SIGNAL CONNECTOR

mA+

V+ T+

EXC

21 354

COM

mA OUT

I-

6

I+

24V OUT

P1-

45 312

P2+

P2-P1+

-

2-Wire

4-20 mA

Transmitter

+

Remote Display,

Chart Recorder,

etc.

-

+

Figure 15. 4-20 mA Output & Input Signal Powered by Meter

mA OUT

I-

I+

56

External

Power

Supply

-

+

+

Remote Display,

Chart Recorder,

etc.

Figure 16. 4-20 mA Output Powered Externally

-

22

Trident Model PD765 Universal Input Meter Instruction Manual

SETUP AND PROGRAMMING

Programming From a PC with MeterView®

Precision Digital’s free MeterView® software allows all PD765 Trident
setup parameters to be programmed from a PC (requires PDC protocol
selection) and to save the configuration settings to a file for reporting or
programming other meters. And since the serial adapter is an external
device, one serial adapter can program an infinite number of meters!

The MeterView screen shot above shows how the input is selected. No­tice there are tabs for Scaling, Relays/Alarms, Advanced, and Factory
Values.

• There is no need to recalibrate the meter when first received from the fac-

tory.

• The meter is factory calibrated prior to shipment, for all input types, in

milliamps, volts, and degrees respectively. The calibration equipment is
certified to NIST standards.

Overview

There are no jumpers involved in the setup process of the meter. The
RTD/TC selector switch, located between the SIGNAL and SERIAL con­nectors, must be set accordingly for the meter to accept RTD or thermo­couple inputs, Figure 2.

Setup and programming is done through the front panel buttons.
After power and signal connections have been completed and verified,

apply power to the meter.

For

QUICK INTERFACE REFERENCE

go to page 70

GUIDE

23

Trident Model PD765 Universal Input Meter Instruction Manual

Front Panel Buttons and Status LED Indicators

Button
Symbol

•

Press the

any time.

•

Press the

programming.

•

Press the Up arrow button to scroll through the menus, decimal

point, or to increment the value of a digit.

•

Press the

•

Press the

Menu

Features Menu

Description LED Status

Menu

Right arrow/Reset

Up arrow/Max

Enter/Ack

Menu

button to enter or exit the Programming Mode at

Right

arrow button to move to the next digit during digit

Enter/Ack

Right

button for approximately 3 seconds to access the

button to access a menu or to accept a setting.

arrow and

of the meter.

1 Alarm 1

2 Alarm 2

S Set point indicator

R Reset point indicator

Menu

button simultaneously or hold the

Advanced

For Interactive Virtual

Meter Demo visit

tvm.predig.com

24

Trident Model PD765 Universal Input Meter Instruction Manual

Display Functions and Messages

The meter displays various functions and messages during setup/pro­gramming and operation. The following table shows the displayed func­tions and messages with their action/setting description.

Display Parameter Action/Setting

setu

inpt

4-20

0-10

rtd

a385

A392

tC

0 J

1 k

2 T

3 t.0

4 E

f C

°F

°C

dec.p

prog

scal

Cal

inp1

dis1

inp2

Setup

Input

4-20 mA

0-10 VDC

RTD

Alpha 385

Alpha 392

TC

0 J

1 K

2 T

3 T.0

4 E

°

F or °C

°

F

°

C

Decimal point

Program

Scale

Calibrate

Input 1

Display 1

Input 2

Enter Setup menu

Enter Input menu

Set meter for 4-20 mA input

Set meter for ±10 VDC input

Set meter for RTD input

Set α = 0.00385 European curve 100Ω
RTD

Set α = 0.00392 American curve 100Ω RTD

Set meter for TC input

Type J

Type K

Type T

Type T, 0.1° resolution

Type E

Set temperature scale

Set meter to Fahrenheit

Set meter to Celsius

Set decimal point

Enter the Program menu

Enter the Scale menu

Enter the Calibrate menu

Calibrate input 1 signal or program input 1
value

Program display 1 value

Calibrate input 2 signal or program input 2
value

25

Trident Model PD765 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

dis2

err

RELY

RLY1

Act1

Auto

A-m

LtCH

L-CL

Altr

oFF

Set1

rSt1

RLY2

Act2

Set2

RSt2

FLSF

FLS1

on

off

FLS2

DLAY

DLY1

On1

OFF1

DLY2

Display 2

Error

Relay

Relay 1

Action 1

Automatic

Auto-manual

Latching

Latching­cleared

Alternate

Off

Set 1

Reset 1

Relay 2

Action 2

Set 2

Reset 2

Fail-safe

Fail-safe1

On

Off

Fail-safe2

Delay

Delay 1

On 1

Off 1

Delay 2

Program display 2 value

Error, calibration not successful, check signal

Enter the Relay menu

Relay 1 setup

Set relay 1 action (automatic, latching, etc.)

Set relay for automatic reset

Set relay for automatic + manual reset any
time

Set relay for latching operation

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

Set relays for pump alternation control

Disable relay and front panel status LEDs
Disable relay’s fail-safe operation

Program set point 1

Program reset point 1

Setup relay 2

Set relay 2 action (automatic, latching, etc.)

Program set point 2

Program reset point 2

Enter Fail-safe menu

Set relay 1 fail-safe operation

Enable fail-safe operation

Disable fail-safe operation

Set relay 2 fail-safe operation

Enter Time Delay menu

Enter relay 1 time delay setup

Set relay 1 On time delay

Set relay 1 Off time delay

Enter relay 2 time delay setup

26

Trident Model PD765 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

On2

OFF2

brek

Brk1

Off

On

Brk2

Aout

Scal

Dis1

out1

Dis2

out2

SEbr

pass

unlC

loCd

9999

-1999
open

On 2

Off 2

Break

Relay 1 Break

Off

On

Relay 2 Break

Analog output

Scale

Display 1

Output 1

Display 2

Output 2

Sensor break

Password

Unlocked

Locked

Flashing dis­play

Set relay 2 On time delay

Set relay 2 Off time delay

Set RTD/TC input break relay behavior

Set relay 1 input break relay behavior

Set relay to non-alarm condition at break

Set relay to alarm condition at break

Set relay 2 input break relay behavior

Enter the Analog output menu

Enter the Scale menu

Program display 1 value

Program output 1 value (e.g. 4 mA)

Program display 2 value

Program output 2 value (e.g. 20 mA)

Program TC or RTD sensor break value for
analog out

Enter the Password menu

Program password to lock meter

Enter password to unlock meter

Overrange condition
Underrange condition
Open TC or RTD sensor

27

Trident Model PD765 Universal Input Meter Instruction Manual

A

Main Menu

The main menu consists of the most commonly used functions:

Password

and

•

Press

row button to scroll main menu.

.

Menu

button to enter Programming Mode then press Up ar-

Setup

Run

Mode

9765 setu pass

•

Press

•

Changes to the settings are saved to memory only after pressing

•

The display moves to the next menu every time a setting is ac-

Setting Numeric Values

The numeric values are set using the
Press
value.

The digit being changed is displayed brighter than the rest.
Press the

button to exit without saving changes.

Menu

, at any time, to exit and return to Run Mode. Changes

made to settings prior to pressing

Enter/Ack

cepted by pressing

Right

.

Enter/Ack

arrow to select next digit and

Enter/Ack

button, at any time, to accept a setting or

.

Enter/Ack

Right

are not saved.

and Up arrow buttons.

Up

arrow to increment digit

Menu

Increment Digit

Value

0 4.00 04.00 0 5. 00

Select Next Digit

The decimal point is set using the

point

menu.

Up

arrow button in the

28

ccept Setting

Next

Setting

Setup-decimal

Trident Model PD765 Universal Input Meter Instruction Manual

r

Setting Up the Meter (setu)

The

Setup

menu is used to select:

1. Input signal the meter will accept

2. Decimal point position for process inputs

°

3. Units (

4. Relay operation

5. 4-20 mA analog output set up

Press the
ton to scroll through choices. Press the

F or °C) for temperature inputs

Enter/Ack

Note:

Selecting R TD o
the Input menu will include the
Fahrenheit/Celsius menu in the
setup menu structure. RTD will
allow the selection of a decimal
point location after this menu and
TC has a fixed decimal point loca
tion and will not allow the selec ­tion of a decimal point location.

button to access any menu or press Up arrow but-

R TD

TC

TC mode from

-

Menu

button to exit at any time.

29

Trident Model PD765 Universal Input Meter Instruction Manual

Setting the Input Signal (inpt)

Enter the Input menu to set up the meter to display current (4-20), volt­age (0-10), thermocouple (tC), or RTD (rtd) inputs.

The voltage input is capable of accepting any signal from -10 to +10
VDC. Select voltage input to accept 0-5, 1-5, 0-10, or ±10 VDC signals.

The current input is capable of accepting any signal from -20 to 20 mA.
Select current input to accept 0-20 or 4-20 mA signals.

inpt

4-20 0-10 rtd tC

0 j

1 k

2 t

3 t.0

4 e

J

K

T

T.0

E

Press Enter/Ack to

Make Selections

Press Up Arrow

to Scroll Through

Choices

Press Menu to

Exit at any Time

a385

a392

If RTD is selected, the display shows A385 or A392. Select the coeffi­cient to match the RTD sensor, either 0.00385 (A385, European curve)
or 0.00392 (A392, American curve). The display then shows the decimal
point menu, DEc.P. Select the decimal point resolution as shown on page

31.

If TC is selected, scroll through the thermocouple types and select the
type matching the TC sensor.

The input signal must be connected to the appropriate input terminals
and the RTD/TC selector switch must be set, see Figure 8 on page 18.

For thermocouple inputs, allow at least 30 minutes warm-up

time for meter to reach specified accuracy.

30

Trident Model PD765 Universal Input Meter Instruction Manual

Setting the Decimal Point (dc.pt)

Decimal point for process inputs may be set with up to three decimal
places or with no decimal point at all.

Decimal point for RTD inputs may be set with 1 decimal place or none.
Decimal point for thermocouple inputs is fixed.
Pressing the Up arrow moves the decimal point one place to the right

until no decimal point is displayed, it then moves to the leftmost position.

Select Decimal

Point

Previous

dec.p

dddd

Next

Setting the Temperature Scale (F C)

The meter can be set to display temperature in degrees Fahrenheit or
Celsius.

Press Up arrow to change selection.
Press Enter/Ack to accept.

31

Trident Model PD765 Universal Input Meter Instruction Manual

Programming the Meter (prog)

It is very important to read the following information, before proceeding
to program the meter:

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

• The meter is factory calibrated prior to shipment, for all input
types, in milliamps, volts, and degrees respectively. The calibration
equipment is certified to NIST standards.

• Use the Scale menu to scale process inputs (e.g. 4-20 mA). A cali-
brated signal source is not needed to scale the meter.

• For thermocouple and RTDs, just connect the sensor to the proper
terminals and turn the power on. No calibration needed! (when
the meter is first received from the factory).

The Program menu contains the Calibrate and the Scale menus.
Process inputs may be calibrated or scaled to any display within the

range of the meter.

prog ScAl

Additional parameters, not needed for most applications, are pro­grammed with the Advanced Features menu, see Advanced Features
Menu, page 50.

32

CAL

Trident Model PD765 Universal Input Meter Instruction Manual

Scaling the Meter (scal)

The process inputs (4-20 mA and ±10 VDC) can be scaled to display
the process in engineering units.

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

Press Enter to Accept Setting

scal

Press Up to Set Digit Value

Press Right to Select Next Digit

inp1

Press Menu to Exit at any Time

04.00

Set Input 1

Value

Note:

dis1 00.0

Set Display 1

Value

For instructions on how to program

numeric values see Setting Numeric

Values, page 28.

The Scale menu is not available for temperature inputs.

33

inp2

Scale

Input 2

Trident Model PD765 Universal Input Meter Instruction Manual

Error Message (Err)

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

After the error message is displayed, the meter reverts to input 1, allow­ing the appropriate input signals to be applied.

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

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

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

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

Minimum Input Span

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

Input range Input 1 & input 2 span
4-20 mA 0.40 mA

±10 VDC
TC

RTD

0.20 VDC

100°F (56°C)

50°F (28°C)

34

Trident Model PD765 Universal Input Meter Instruction Manual

Calibrating the Meter (Cal)

To scale the meter without a signal

source, refer to Scaling the Meter

(scal), page 33.

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

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

See Scaling the Meter for Button

Functions Description

Cal

inp1 dis1 04.00

Display

Flashes

Accepting

Input

Set Display 1

Value

inp2

Calibrate

Input 2

Recalibrating Temperature Inputs (Cal)

Remember, the meter is calibrated at the factory prior to shipment. Re­calibration is recommended at least every twelve months.

The Calibration (CAL) menu is used to recalibrate the thermocouple and
RTD inputs.

Allow at least 30 minutes warm-up time

before performing recalibration proce-

dure to ensure specified accuracy.

35

Trident Model PD765 Universal Input Meter Instruction Manual

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.

Type of in­put

Type J T/C

Type K T/C

Type T T/C

Type T T/C

Type E T/C

100 Ω RTD
(0.00385)

100 Ω RTD
(0.00392)

Input 1
(Low)

32

32

32

32.0

32

32°F

100

32°F

100

Input 2
(High)

°F 1182°F 600°F

°F 1893°F 960°F

°F 693°F 360°F

°F 693.0°F 360.0°F

°F 1652°F 840°F

1148°F

320.12

Ω

1127°F

320.89

Ω

Ω

Ω

Check
(Middle)

°F

590

215.61

°F

580

215.87

Ω

Ω

Recalibration Procedure for Temperature Inputs

1. Connect signal to the meter using the appropriate wire (e.g. type J

thermocouple wire to recalibrate type J input), see page 18.

2. Set up the meter to accept the selected input (e.g. type J T/C), see

page 30.

3. Set up the meter to display temperature in degrees Fahrenheit, see

page 31.

4. Apply signal corresponding to input 1 (32°F) and program display 1 to

32, see page 35.

5. Apply signal corresponding to input 2 (1182°F for type J) and program

display 2 accordingly, see page 35.

6. After the meter accepts input 2, the display flashes the message

that indicates the meter is sensing the cold junction reference. This
completes the recalibration procedure for the selected input.

CJr

Recalibrating Process Inputs (ICal)

The Internal Calibration (ICAL) menu, located in the Advanced features
menu, is used to recalibrate the current and voltage inputs. Recalibra­tion is recommended at least every twelve months.

Refer to Internal Calibration (ICal), page 59 for instructions.

36

Trident Model PD765 Universal Input Meter Instruction Manual

Setting the Relay Operation (rely)

This menu allows you 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 condi-

tion has cleared)
e. Pump alternation control (automatic reset only)
f. Off (relay and status LED disabled)

2. Set point

3. Reset point

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

5. Time delay
a. On delay (0-199 seconds)
b. Off delay (0-199 seconds)

6. Break Condition Behavior
a. Off (non-alarm condition)
b. On (alarm condition)

From Setup

Menu

Refer to page 25 for a
description of Display

Functions and Messages

rELY

rLY1 rLY2

Same

Act1

Functions as

Relay 1

SEt1

rSt1

Press Enter/Ack button to access any menu
Press Menu button to exit at any time

FLSF

FLS1

FLS2

37

dLAY

dLy1

dLY2

brek

brk1

brk2

Trident Model PD765 Universal Input Meter Instruction Manual

Setting the Relay Action

The relays’ Action menu allows the user to set up the operation of the
relays. The relays may be set up for any of the following modes of oper­ation:

1. Automatic reset (non-latching)

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

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

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

5. Pump alternation control (automatic reset only)

6. Off (relay and status LED disabled)

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

From Relay 1

Menu

Press
Press

Enter/Ack

button to accept setting

Menu

button to exit at any time

Act1

Auto A-m

LtCH

L-CL

ALtroFF

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 set and reset points
are programmed the same, relay will reset one count below set point.

SEt1

Program Set

Point

Quick Set Points

Press Up arrow and Menu
at the same time to access

rSt1

Program Reset

Point

set/reset points quickly.

38

Trident Model PD765 Universal Input Meter Instruction Manual

Setting Fail-Safe Operation

The fail-safe operation is set independently for each relay. Select on to
enable or select off to disable fail-safe operation.

Press

FLSF

Press

Enter/Ack
Menu

button to accept setting

button to exit at any time

FLS1

FLS2

Programming Time Delay

The On and Off time delays may be programmed for each relay be­tween 0 and 199 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.

on oFF

on oFF

Program On

Time Delay

Program Off

Time Delay

39

Trident Model PD765 Universal Input Meter Instruction Manual

Setting Sensor Break Condition

The sensor break relay condition may be programmed for each relay as

On (alarm) or Off (non-alarm). The relays will enter these states when a

sensor break is detected for RTD or thermocouple inputs. These set­tings have no effect when current or voltage inputs are selected.

40

Trident Model PD765 Universal Input Meter Instruction Manual

Relay and Alarm Operation

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

High Alarm Operation (Set > Reset)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay.
For relay to turn back "on", signal must go below set point, and then go
above it.

41

Trident Model PD765 Universal Input Meter Instruction Manual

Low Alarm Operation (Set < Reset)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay.
For relay to turn back "on", signal must go above set point, and then go
below it.

42

Trident Model PD765 Universal Input Meter Instruction Manual

Time Delay Operation

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

On

If the signal crosses the set point, the

time delay timer starts and the

relay trips when the time delay has elapsed. If the signal drops below

On

the set point (high alarm) before the time delay has elapsed, the
time delay timer resets and the relay does not change state. The same

Off

principle applies to the

time delay.

* Note:

The LED is not affected by Time Delay when

Manual”

reset mode is selected. Rather the LED follows the set

“Automatic or

and reset points.

43

Trident Model PD765 Universal Input Meter Instruction Manual

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

Fail-safe operation:

relay coil is energized in non-alarm condition. In

case of power failure, relay will go to alarm state.

44

Trident Model PD765 Universal Input Meter Instruction Manual

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

Fail-safe operation:

relay coil is energized in non-alarm condition. In

case of power failure, relay will go to alarm state.

45

Trident Model PD765 Universal Input Meter Instruction Manual

Pump Alternation Control Operation

46

Trident Model PD765 Universal Input Meter Instruction Manual

Scaling the 4-20 mA Analog Output (Aout)

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

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

Depending on the version of meter purchased, the
may not appear in the
the factory via the
the Advanced Features Menu see page 50.

The

Analog Output menu is used to program:

1. 4-20 mA output based on display values

2. Sensor break value in mA

Setup menu. This menu is enabled or disabled at

Advanced Features menu. For more information on

Analog Output menu

Aout

Press Enter to Accept Setting

scal

Press Up to Set Digit Value

Press Right to Select Next Digit

dis1

Press Menu to Exit at any Time

00.00

Set Display 1

Value

out1 04.00

Set Output 1

Value

For instructions on how to program

numeric values see

Values

Setting Numeric

, page 28.

47

dis2

Scale

Output 2

Trident Model PD765 Universal Input Meter Instruction Manual

Program the Sensor Break Output Value (SEbr)

The sensor break value corresponds to the output signal generated
when the meter detects a sensor break for thermocouple and RTD in­puts.

For example if there is an open thermocouple, the meter displays the
message “
break value (e.g. 3.00 mA).

The sensor break value can be programmed from 0.00 to 23.99.
The typical output signal range is 1.00 to 23.00 mA (e.g. If sensor break
value is programmed to 0.00, the actual output will not be greater than

1.00 mA).

open” and the analog output goes to the programmed sensor

Press Enter to Accept Setting

Aout

Press Up to Set Digit Value

Press Right to Select Next Digit

scal

Press Menu to Exit at any Time

Program

sEbr

03.00

Menu

Set Sensor

Break Value

Analog Output when Display is Out of Range

The analog output reflects the display out of range conditions as follows:

Input Condition Display Analog Output

Underrange Flashing -1999 3.00 mA
Overrange Flashing 9999 21.00 mA
Open TC or RTD Flashing open Sensor break value

48

Trident Model PD765 Universal Input Meter Instruction Manual

Setting Up the Password (pass)

The Password menu is used to program a four-digit password to pre­vent unauthorized changes to the programmed parameter settings.

Locking the Meter

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

For instructions on how to program numeric values see Setting Numeric
Values, page 28.

Run Mode

pass unlC 0000

Program

Password

Record the password for future reference. If appropriate, it may be rec­orded in the space provided.

Model:
Serial Number:
Password: __ __ __ __

loCd

Unlocking the Meter

If the meter is password protected, the correct password must be en­tered in order to make changes to the parameter settings.

Run Mode

pass loCd 0000

Enter

Password

unlC

49

Trident Model PD765 Universal Input Meter Instruction Manual

Entering the correct four-digit number sets the password to 0000, disa­bling the protection.

Changes to the programmed parameter settings are allowed only with
the password set to 0000.

If the password entered is incorrect, the meter displays

LoCd (Locked)

for about two seconds, then it returns to Run Mode. To try again, press

Enter/Ack while the Locked message is displayed.

Forgot the Password?

The password may be disabled by the following
procedure:

1. Note display reading prior to pressing the Menu
button. Ignore decimal point and sign.

2. Access the
reading and enter that number as the password
(e.g. display reading = -1.23, password = 0125).

Password menu, add 2 to the noted

Advanced Features Menu

To simplify the setup process, functions not needed for most applica­tions are located in the

Press the

Right arrow and Menu button simultaneously or hold the

Menu button for approximately 3 seconds to access the

tures Menu

of the meter.

Press Simultaneously

Advanced Features menu.

Advanced Fea-

*

adj

fltr

byps

serl

* Available for temperature inputs only

* * Available for process inputs only

Press Enter/Ack to Access
Menu or to Accept Setting

Press Up to Scroll Menu and
to Increment Digit Value

Press Right to Select Next Digit

Press Menu to Exit at any Time

Copy

SELc

50

**

I Cal

diag

Trident Model PD765 Universal Input Meter Instruction Manual

s

s

Advanced Features Menu & Display Messages

Display Parameter Action/Setting

adj

fltr

byps

serl

prot

PDC

mbs

addr

baud

trdE

prty

tbyt

Copy

send

done

Selc

Func

Linr

Sqrt

cutF

out

Aout

rEly

Aout

Yes

no

Inty

Adjust

Filter

Bypass

Serial

Protocol

PDC

Modbus

Address

Baud rate

Transmit delay

Parity

Byte-to-byte

Copy

Send

Done

Select

Function

Linear

Square root

Cutoff

Output

Analog output

Relay

Analog output

Yes

No

Intensity

Set offset adjustment for temperature, not
available for process inputs

Set noise filter value

Set filter bypass value

Set serial communication parameters

Enter the Protocol menu

Select PDC protocol

Select Modbus protocol

Set meter address

Select baud rate

Set transmit delay for serial communication

Select none, even, or odd (Modbus only)

Program byte-to-byte timeout
(silent time – Modbus only)

Enter copy function

Send meter settings to another meter

Copy function completed

Enter the Select menu (function, cutoff, out)

Select linear or square root function

Set meter for linear function

Set meter for square root extraction

Set low-flow cutoff

Set meter for either relay or analog output

(factory set only – only included in certain model

Set meter for analog output option

Set meter for relay option

Enable or disable analog output

(factory set only – only included in certain model

Enable analog output

Disable analog output

Select display intensity

51

Trident Model PD765 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

ICal

Curr

I lo

I Hi

volt

Vlo

VHi

diag

led

CJC

Cfg

pts

RELY

Aout

GoFF

SErL

Info

Initial calibration

Current

I low

I high

Volt

V low

V high

Diagnostics

LED

CJC

CFG

Points

Relays

Analog output

Gain/offset

Serial

Information

Enter initial calibration for process inputs

Calibrating current input

Calibrate low current input

Calibrate high current input

Calibrating voltage input

Calibrate low voltage input

Calibrate high voltage input

Display parameter settings

Test display

Display cold junction compensation voltage

Display meter configuration

Display calibration points for process inputs

Display relay settings

Display analog output settings

Display gain and offset for process inputs

Display serial communication settings

Display software version and S/N information

52

Trident Model PD765 Universal Input Meter Instruction Manual

Offset Adjustment (Adj)

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
adjustment value is programmed through the

The offset adjustment feature can be useful to compensate for errors
due to thermocouple junctions or excessive lead wire resistance in
RTDs.

The offset adjustment value is automatically reset to zero whenever the
type of temperature sensor is changed (
curve).

Celsius/Fahrenheit conversion of the offset adjustment value is auto­matic, see note 2 below for important limitations.

Notes:

1. Offset adjustment is available only when TC or RTD input is se­lected.

2. If adjustment value is greater than 11
scale is changed to Fahrenheit, the maximum applied adjust­ment will be 19.9

°F.

i.e. Thermocouple type or RTD

±19.9°. The offset

Adjust menu.

°C and the temperature

Noise Filter (fltr)

Most applications do not require changing this parameter. It is intended
to help attain a steady display with an unsteady (noisy) input signal.

The field selectable noise filter averages any minor or quick changes in
the input signal and displays the reading with greater stability.

Increasing the filter value will help stabilize the display, however this will
reduce the display response to changes on the input signal.

The filter level may be set anywhere from 2 to 199.
Setting filter value to zero disables filter function, and bypass setting be-

comes irrelevant.

53

Trident Model PD765 Universal Input Meter Instruction Manual

Noise Filter Bypass (byps)

The meter can be programmed to filter small input changes, but allow
larger input changes to be displayed immediately, by setting the bypass
value accordingly.

If the input signal goes beyond the bypass value, it will be displayed im­mediately with no averaging done on it.

The noise filter bypass value may be set anywhere from 0.2 to 99.9. It
corresponds to percentage of full scale for process inputs and to de­grees Fahrenheit for temperature inputs.

Increasing the bypass value may slow down the display response to
changes on the input signal.

Serial Communications (serl)

The meter is equipped with serial communications capability as a stand­ard feature using PDC Serial Communication Protocol. The Modbus
RTU protocol is included on all models after 5/1/2010. To communicate
with a computer or other data terminal equipment, an RS-232 or RS-485
adapter option is required; see
tails.

Ordering Information on page 3 for de-

Serl Prot

When using more than one meter in a multi-drop mode, each meter
must be provided with its own unique address. The address may be pro­grammed from 00 to 99 for PDC protocol and from 1 to 247 for M odbus
protocol. The transmit delay may be set between 0 and 199 ms (see Se­rial Communication Adapter manual for more details).

The Trident can also be connected directly to another Trident meter
through a cable assembly (PDA7420). This allows the user to copy all
the settings from one meter to another, using the

Addr

bAud trde

Copy function.

Protocol Selection Menu (Prot)

The Protocol selection menu is used to select either the PDC or the
Modbus protocol.

54

Trident Model PD765 Universal Input Meter Instruction Manual

Select Menu (SElc)

The Select menu is used to select linear or square root function, display
intensity, and low-flow cutoff. Selection for relay or analog output is a
factory setting depending on the option installed.

• Output options are installed

and set up at the factory.

• Changing the output selec-

tion will cause erroneous op­eration.

Note:

Depending on meter model, the Select menu
will display either out or Aout. In either case,
the output selection menu is for factory use
only. Do not attempt to change output selection.

Linear or Square Root Function (linr or Sqrt)

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

The square root function is used to linearize the signal from a differential
pressure transmitter and display flow rate in engineering units.

Advanced

Features

Press Enter to Accept Setting

SELc

Func

Linr

55

Sqrt

Trident Model PD765 Universal Input Meter Instruction Manual

Low-Flow Cutoff (cutF)

The low-flow cutoff feature allows the meter to be programmed so that
the often-unsteady output from a differential pressure transmitter, at low
flow rates, always displays zero on the meter.

The cutoff value may be programmed from 0 to 9999. Below the cutoff
value, the meter will display zero. Programming the cutoff value to zero
disables the cutoff.

Next
Menu Item

Display Intensity (inty)

The Display Intensity function allows the selection of eight levels of in­tensity for various lighting conditions.

Advanced

Features

SELc

Func

inty

Press Enter to Accept Setting

Press Up to Select Value

Press Menu to Exit at any Time

int3

Select Display

Intensity Level

56

Next

Trident Model PD765 Universal Input Meter Instruction Manual

MeterView® Software

Precision Digital’s MeterView® software allows the Trident to be pro­grammed from a PC and to act as a data logger.

MeterView

®

software allows all setup parameters to be saved to a file

for reporting, restoring, or programming other meters.
See

Ordering Information, page 3 to order MeterView

®

software.

Note: PDC protocol must be selected to communicate with MeterView®.

Meter Copy Function (Copy)

The Copy function is used to copy (or clone) all the settings from one
meter to other meters requiring exactly the same setup and program­ming (

i.e. type of input, scaling, decimal point, filter, bypass, etc.).

Figure 17. Meter Copy Connection

Copy Function Requirements

To successfully copy settings from one me­ter to another, both meters must have:

1. Same software version

2. Same baud rate setting

3. PDC protocol selected

See Determining Software Version,

page 65 for instructions.

57

Trident Model PD765 Universal Input Meter Instruction Manual

Meter Cloning Instructions

NOTICE!

1. Connect the two meters using cable assembly PDA7420 or equiva­lent (

e.g. Digi-Key P/N H1663-07-ND). Cable should not exceed

7' (2.1 m).

2. Power up both meters. Leave Clone meter in Run Mode.

3. Enter the

vanced Features Menu

4. Scroll to

Enter/Ack.

5. The meter displays the message
play flashes while sending data. The message
when copying is completed.

Advanced Features Menu of the Master meter, see Ad-

Copy function using Up arrow button then press

Advanced

Features

Do not connect the two meters to
the same 4-20 mA loop while
cloning. Internal calibration may
be affected.

, page 50.

Send. Press Enter/Ack, the dis-

done is displayed

Display

Flashes While

Sending

Copy send

Press

Menu

to Exit and

Return to Run Mode

6. The Clone meter displays the memory address being programmed
then the message
tializes and returns to Run Mode using the same settings as the
Master.

7. If meter to be cloned does not respond to the data being sent, refer
to

Copy Function Requirements above.

done when copying is completed. The meter ini-

done

58

Trident Model PD765 Universal Input Meter Instruction Manual

Internal Calibration (ICal)

• There is no need to recalibrate the meter

when first received from the factory.

• The meter is factory calibrated prior to

shipment, for all input types, in milliamps,
volts, and degrees respectively. The cali­bration equipment is certified to NIST
standards.

The internal calibration allows the user to scale the meter without apply­ing a signal. This menu is not available if the meter is set up for TC or
RTD inputs.

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

Check calibration of the meter at least every 12 months. Each input type
must be recalibrated separately, if meter will be used with all input
types.

Notes:

• If meter is in operation and it is intended to

accept only one input type (e.g. 4-20 mA),
recalibration of other inputs is not necessary.

• Allow the meter to warm up for at least

15 minutes before performing the internal cali­bration procedure.

Internal calibration menu is part of the Advanced Features Menu.

The

1. Press the Right arrow
Menu button for approximately 3 seconds to access the

Features Menu of the meter.

2. Press the
and press

Up arrow button to scroll to the Internal calibration menu

Enter/Ack.

3. The meter displays either current (
ing to the meter input setup. Press
tion process.

and Menu button simultaneously or hold the

Advanced

Curr) or voltage (volt), accord-

Enter/Ack to start the calibra-

59

Trident Model PD765 Universal Input Meter Instruction Manual

Example for current input internal calibration:

4. The meter displays Low input current (I lo). Apply the low input
signal and press
while meter is accepting the low input.

5. After the display stops flashing, a number is displayed with the left­most digit brighter than the rest. The bright digit is the active digit
that can be changed by pressing the

Right arrow button to move to the next digit.

6. Set the display value to correspond to the input signal being cali­brated.

7. The display moves to the high input calibration (
high input signal and press

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

Enter/Ack. The display flashes for a moment

Up arrow button. Press the

I Hi). Apply the

Enter/Ack.

For instructions on how to pro-

gram numeric values see Set-

ting Numeric Values

, page 28.

I Cal

Set Display Value

Curr

for Low Input

I lo 04.00

The graphic above shows the calibration of the current input. The volt­age input is calibrated in a similar way.

Display

Flashes

While

Accepting

Input

60

I Hi

Calibrate

High Input

Trident Model PD765 Universal Input Meter Instruction Manual
Tips:

Low and high input signals can be any valid values within the

•

range of the meter.

• Observe minimum input span requirements between input 1

and input 2.

• Low input must be less than high input signal.

Error Message (Err)

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

After the error message is displayed, the meter reverts to input 1, allow­ing the appropriate input signals to be applied.

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

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

2. Wrong signal selection in

Setup menu.

3. Minimum input span requirements not maintained.

Minimum Input Span

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

Input range Input 1 & input 2 span
4-20 mA 0.40 mA

±10 VDC

0.20 VDC

61

Trident Model PD765 Universal Input Meter Instruction Manual

OPERATION

For process inputs, the meter is capable of accepting positive and nega­tive signals and displaying these signals in engineering units from -1999

e.g.

to 9999 (
to 10.00).

The temperature inputs are displayed according to the input type and
temperature units (
puts can be displayed with either 1

Front Panel Buttons Operation

a signal from -10 to +10 VDC could be displayed as -10.00

°

F or °C) selected. RTD and Type T thermocouple in-

°

or 0.1° resolution.

Button

Description

Symbol

Press to enter or exit Programming Mode,
view settings, or exit Max/Min readings

Hold to enter Advanced features menu.

Press to reset Max/Min readings

Press to display Max/Min readings
alternately

Press to display Max/Min reading
indefinitely while displaying Max/Min

Press ACK to acknowledge relays

62

Trident Model PD765 Universal Input Meter Instruction Manual

Maximum/Minimum Readings

The main function of the front panel buttons during operation is to dis­play the maximum and minimum readings reached by the process or
temperature inputs.

Actual

Reading

2468 Hi lo

9846 200

10 Sec Time Out

Press Up to Display and to
Toggle Between Max & Min

Press

Press

Enter

to Hold Max/Min

Right

to Reset Max/Min

Press

1. Press

2. Press

3. Press

4. If

5. Press

Up arrow/Max button to display maximum reading since the

last reset/power-up.

Up arrow/Max again to display the minimum reading since

the last reset/power-up.

Enter/Ack to hold Max/Min display reading, the meter will

continue to track new Max/Min readings.

Enter/Ack is not pressed, the Max/Min display reading will time

out after ten seconds and the meter will return to display the actual
reading.

Right arrow/Reset button to reset Max/Min while reading is

being displayed. Max/Min display readings are reset to actual
reading.

Menu

to Exit Max/Min

63

Trident Model PD765 Universal Input Meter Instruction Manual

MOUNTING DIMENSIONS

1.76"

(45mm)

2.45"

(62mm)

0.59"

(15mm)

3.2"

(81mm)

3.6"

(91mm)

Figure 18. Meter Dimensions – Side View

Figure 19. Case Dimensions – Top View

64

Trident Model PD765 Universal Input Meter Instruction Manual

TROUBLESHOOTING

For an Interactive Virtual

Meter Demo visit

tvm.predig.com

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
menu and consult the recommendations described below.

Diagnostics Menu (diag)

The Diagnostics menu is located in the Advanced Features Menu, to ac­cess

Diagnostics menu see Advanced Features Menu, page 50.

It provides an easy way to view the programmed parameter settings for
troubleshooting purposes. Press the
tings and the

For a description of the diagnostics messages
Menu & Display Messages, page 51.

Menu button to exit at any time.

Determining Software Version

To determine the software version of a meter:

1. Go to the

2. Press

3. Press

ton.

Info).

(

(

UER). Write down the information as it is displayed. Continue

pressing

Diagnostics menu (diAG) and press Enter/Ack but-

Up arrow/Max button and scroll to Information menu

Enter/Ack to access the software number (SFT), version

Enter/Ack until all the information is displayed.

Enter/Ack button to view the set-

see Advanced Features

Diagnostics

65

Trident Model PD765 Universal Input Meter Instruction Manual

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

, page 50.

Menu

2. Press

3. Press and hold

4. The meter goes through an initialization sequence (same as on

Up arrow to go to Diagnostics menu

Right arrow/Reset for five seconds, press

Enter/Ack when display flashes reset.

Note: If
turns to

power-up), and loads the factory default settings.

Enter/Ack is not pressed within three seconds, display re-

Diagnostics menu.

Press Simultaneously

Flashing
Display

diag

rset

Meter Re-

Initializes

Press and Hold
for 5 Sec

66

Trident Model PD765 Universal Input Meter Instruction Manual

Factory Defaults & User Settings

The following table shows the factory setting for most of the program­mable parameters on the meter. Next to the factory setting, the user
may record the new setting for the particular application. MeterView

®

software allows the saving of all meter parameters to a file for restoring
meter settings, reporting, and copying settings to other meters.

Model: ______________ S/N: _______________ Date: _________

Parameter Display Default Setting User

Setting

Input type

Decimal point

Programming

Input 1

Display 1

Input 2

Display 2

Relay 1

Action 1

Set 1

Reset 1

Relay 2

Action 2

Set 2

Reset 2

Fail-safe

Fail-safe 1

Fail-safe 2

Time delay

On delay 1

Off delay 1

inpt

dd.dd

prog

InP1

Dis1

InP2

Dis2

Rly1

Act1

Set1

RSt1

Rly2

Act2

Set2

RSt2

flsf

Fls1

Fls2

dlay

On1

Off1

4-20 mA

2 places

4.00 mA

4.00

20.00 mA

20.00

Automatic

7.00

6.00

Automatic

10.00

9.00

Off

Off

0 sec

0 sec

67

Trident Model PD765 Universal Input Meter Instruction Manual

Parameter Display Default Setting User

Setting

On delay 2

Off delay 2

Break 1

Break 2

Password

Advanced
Features

Adjust

Filter

Bypass

Serial settings

Protocol

Address

Baud rate

Trans delay

Function

Cutoff value

Output option

Display intensity

On2

Off2

Brk1

Brk2

pass

N/A

Adj

fltr

byps

serl

pdC

addr

baud

trde

Func

CutF

out/Aout

inty

Modbus defaults N/A

Address

Parity

Byte-to-byte timeout*

*Note:
The byte-to-byte timeout setting might be updated automatically de­pending on the baud rate selected and the previous timeout setting. The
minimum timeout allowed is saved to memory if a lower value is entered
(e.g. If user enters 0.00 with a baud rate of 300, 0.06 is saved).

addr

prty

tbyt

0 sec

0 sec

Off

Off

0000 (unlocked)

0.0° (temp only)

10

0.2

PDC protocol

00

2400

10 ms

Linear

0.00 (disabled)

Factory set only

Level 8

247

Even

0.01 sec

68

Trident Model PD765 Universal Input Meter Instruction Manual

Troubleshooting Tips

Symptom Check/Action

No display at all

Not able to change setup or pro­gramming,

Meter displays error message dur­ing calibration (

Meter displays

• open

• 9999

• -1999

• Displays negative number,

Display alternates between

1.

2.

Display response is too slow

Inaccurate temperature reading

If the display locks up or the meter
does not respond at all

Relay operation is reversed

Relay and status LED do not
respond to signal

Meter not communicating with Me­terView

Other symptoms not described
above

LoCd is displayed

err)

not responding to RTD.

Hi and a number
Lo and a number

®

or other programs

Check power at power connector

Meter is locked, enter correct four-digit
password to unlock

Check:

1. Signal connections

2. Input selected in

3. Minimum input span requirements
Check:

1. Input selected in

2. TC/RTD Switch position

3. Corresponding signal at Signal
connector

Press

Menu to exit Max/Min

display readings.

Check filter and bypass values

Check:

1. Temperature units (

2. TC type or RTD curve selected

3. Offset adjustment

4. TC wire used

5. Calibration

Cycle the power to restart the
microprocessor.

Check:

1. Fail-safe in

2. Wiring of relay contacts

Check:

1. Relay action in

2. Set and reset points

Check:

1. Serial adapter and cable

2. Serial protocol selected

3. Meter address and baud rate

4. MeterView address and baud rate

Call Technical Support for
assistance.

Setup menu

Setup menu

°F or °C)

Setup menu

Setup menu

69

Trident Model PD765 Universal Input Meter Instruction Manual

QUICK INTERFACE REFERENCE GUIDE

Run Mode

Setup

Password

Locked Unlocked

Display

Max/Min

Input

TC or RTD?
Yes No

F or C

Program

Relays

Analo g

output

4-20 mA

0-10 V

F

C

RTD or Type T

Relay 1

Relay 2

Failsafe

Delays

Scale

Sensor

break

To Password

RTD

TC

No Yes

Decimal

Point

Type K

Type T

Type T.0

Type E

d . ddd

dd . dd

ddd . d

Acti on

Set point

Reset point

Failsafe 1

Failsafe 2

Delay 1

Delay 2

A385

A392

Type J

dddd

To Delays

TC or RTD?
Yes No

Auto

Auto & Manual

Latch

Latch w/Clear

Pump Alt

Off

On

Off

To Program

Scale

Calibrate

To Relays

To

Set point

70

Trident Model PD765 Universal Input Meter Instruction Manual

Pushbutton Function
Menu Go to Programming Mode or leav e Programming, Advanced

Right Arrow Mov e to next digit.
Up Arrow Move to next selection or increment digit.
Enter/Ack Accept selection/value and move to next selection.

Right Arrow & Menu simultaneously enters Advanced Features

Max/Min Mode

While in Run Mode, pressing Up Arrow will initiate Max/Min Mode. Up Arrow
toggles between Max & Min displays, and Right Arrow resets the Max/Min to the
current value. Press Menu or wait 10 seconds to return to Run Mode. Pressing
Enter/Ack will disable the 10 second timeout and continuously display Max or Min.

Features, and Max /Min Modes.

Press Right arrow and Menu
to access Advanced Features
Menu

TC or RTD?
Yes No

Adjust

Advanced

Features

Filter

Bypass

Serial

Copy Send

Select

TC or RTD?
Yes No

Initial

Calibrate

Diagnostics

Function

Cutoff

Output

Intensity

When the meter is locked, Adjust,
Filter and Bypass can only display
their settings, and the Copy and
ICAL functions are not available.

Operational Modes

Right Arrow & Menu

(or hold Menu for 3 sec)

Run

Menu

Menu

Program

Linear

Sq. Root

Menu

Up Arrow

Protocol

Address

Baud

TX Delay

Modbus?
No Yes

Parit y

Byte-to-byte

timeout

Max &

Min

Menu

Modbus

PDC

71

Trident Model PD765 Universal Input Meter Instruction Manual

This Page

Intentionally

Left Blank

72

EU DECLARATION OF CONFORMITY

Issued in accordance with ISO/IEC 17050-1:2004.

We,

as the manufacturer, declare under our sole responsibility that the product(s),

to which this declaration relates, is in conformity with the European Union Directives shown
below:

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:

Product Markings:

Precision Digital Corporation
233 South Street
Hopkinton, MA 01748 USA

Model PD765 Trident Process and Temperature Meter

2014/35/EU Low Voltage Directive
2014/30/EU EMC Directive
2011/65/EU RoHS Directive

EN 55011:1998
EN 61000-6-2:2001
EN 61010-1:1995
EN 61326:2006

The standards EN 55011:1998, EN 61000-6-2:2001, EN 61010-1:1995, and EN
61326:2006 are no longer harmonized. The requirements of these standards have been
checked against the harmonized standards EN 55011:2009+A1:2010, EN 61000-6­2:2005, EN 61010-1:2010, and EN 61326:2013 and there were no major technical
changes affecting the latest technical knowledge for the products listed above.

Signed for and on behalf of Precision Digital Corporation:

Name: Jeffrey Peters
Company: Precision Digital Corporation
Title: President
Date: 04/20/2016

Document No: DoC PD765 {042016}

Trident Model PD765 Universal Input Meter Instruction Manual

How to Contact Precision Digital

• For Technical Support please

Call: [phone] or [phone]

Fax: [phone]

Email: [email protected]

• For Sales Support or to place an order please

Call: [phone] or [phone]

Fax: [phone]

Email: [email protected]

• For the latest version of this manual please visit

www.predig.com

• For an Interactive Virtual Meter Demo please visit

tvm.predig.com

SFT031 & SFT077 Ver 3.300 & up

LIM765_S

04/16