Precision Digital PD765 Trident Process & Temperature Digital Panel Meter

Last Updates: 14/08/2020

Precision Digital PD765-7X2-00


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Part Number: PD765-7X2-00 Categories: , Tags: , ,
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  • SKU: PD765-7X2-00 
    Product Type: 1/8 DIN Process & Temperature Digital Panel Meter 
    Input: Current (4-20 mA), Voltage (0-10 V), Thermocouple, RTD 
    Output Options: 2 Relays 
    Power: 12-36 VDC, 12-24 VAC 
    Approvals: CE, UL/C-UL 
    Transmitter Power: None 
    Display Category: LED, Single Line, Sunlight Readable, Large Display 
    Display: 1.2″ High, 4 Digits, Red LED 
    Warranty: 3 years 
    Product Series: Trident 
    Product Family: PD765 
    Product category: Digital Panel Meters 
    Product Application: Level, Pressure, Temperature, Process, Pump Control

    Wiring Diagram:

    The Precision Digital Trident PD765 digital panel meter is one of the most versatile meters on the market and will satisfy a wide variety of process and temperature applications. Housed in a 1/8 DIN enclosure with a NEMA 4X front, the meter can be field programmed to accept process voltage (0-5 V, 1-5 V, etc.) and current (4-20 mA) inputs, 100 Ohm RTDs, and the four most common thermocouples. 

    The display height on the standard Trident meter is 0.56″ (14.2 mm), and on the Trident X2, the display height is an astounding 1.2″ (30.5 mm). The intensity of the display can be adjusted to compensate for various lighting conditions, including direct sunlight. Programming and setup can be performed with the four front panel pushbuttons, free MeterView software, or using the copy function. Options for the PD765 include two relays, a 4-20 mA output, 24 V transmitter power supply, and Modbus® serial communications.


    Display: Trident: 0.56” (14.2 mm); Trident X2: 1.20” (30.5 mm) red LED, 4 digits (-1999 to 9999)
    Display Intensity: Eight user selectable intensity levels
    Front Panel: NEMA 4X, IP65; panel gasket provided
    Programming Methods: Four front panel buttons, cloning with Copy feature, PC with MeterView or LabVIEW software, and Modbus registers. Certified LabVIEW driver available.
    Noise Filter: Programmable 2 to 199 (0 will disable filter)
    Display Update Rate: Process/RTD: 3.7-5/sec; TC: 1.8-2.5/sec
    Overrange: Display flashes 9999
    Underrange: Display flashes -1999
    Recalibration: All inputs are calibrated at the factory; recalibration is recommended at least every 12 months.
    Max/Min Display: Stored until reset by user or meter is turned off.
    Password: Restricts modification of programmed settings.
    Non-Volatile Memory: Settings stored for a minimum of 10 years.
    Power Options: 85-265 VAC, 50/60 Hz; 90-265 VDC, 20 W max or 12-36 VDC; 12-24 VAC, 6 W max.
    Required Fuse: UL Recognized, 5 A max, slow-blow; up to 6 meters may share one fuse.
    Normal Mode Rejection: 64 dB at 50/60 Hz
    Isolation: 4 kV input/output-to-power line; 500 V input-to-output or output-to-24 VDC supplies. 
       -6R5 & -6X5 models only: 100 V output-to-24 VDC supply
    Operating Temperature: -40 to 65°C
    Storage Temperature: -40 to 85°C
    Relative Humidity: 0 to 90% non-condensing
        Power & Signal: removable screw terminal blocks accept 12 to 22 AWG.
        Serial: RJ11 header, standard on all meters.
    Enclosure: 1/8 DIN, high impact plastic, 94V-0, color; gray
    Weight: 9.5 oz (269 g) (including options)
    UL File Number: E160849; 508 Industrial Control Equipment
    Warranty: 3 years parts & labor

    Process Inputs

    Inputs: Field selectable: 0-20 mA, 4-20 mA, 1-5 V, ±10 V
    Accuracy: ±0.05% FS ±1 count; square root: ±0.1% FS ±2 counts
    Function: Linear or square root
    Low-Flow Cutoff: 0 to 9999 (0 disables cutoff function)
    Decimal Point: Up to 3 decimals: d.ddd, dd.dd, ddd.d, or dddd
    Calibration: Scale without signal or calibrate with signal source
    Calibration Range: User programmable over entire range of meter
    Input Impedance: Voltage range: greater than 1 M Ω, Current Range: 50-100 Ω, varies with resettable fuse impedance
    Input Overload: Protected by automatically resettable fuse
    Temperature Drift:

    0 to 65°C ambient-40 to 0°C ambient
    Current: ±0.20% FS (50 PPM/°C)Current: ±0.80% FS
    Voltage: ±0.02% FS (1.7 PPM/°C)Voltage: ±0.06% FS

    Transmitter Supply: Isolated, one or two transmitter supplies
      P1: 24 VDC ±10% @ 200 mA max (-1 option)
      P1 & P2: 24 VDC ±10% @ 200 mA & 40 mA max (-2 option)

    Temperature Inputs

    Inputs: Factory calibrated, field selectable: type J, K, T, or E thermocouples and 100 Ω platinum RTD (0.00385 or 0.00392 curve)
    Resolution: 1°; type T: 1° or 0.1°
    Cold Junction Reference: Automatic
    Temperature Drift: ±2°C maximum
    Offset Adjustment: Programmable to ±19.9°. This parameter allows the user to apply an offset value to the temperature being displayed.
    Input Impedance: Greater than 100 k Ω
    Sensor Break: All relays and alarm status LEDs go to alarm state.

    Input TypeRangeAccuracy
    (0-65° C)
    (-40-0° C)
    Type J-58° to 1382° F
    -50° to 750° C
    ±2° F
    ±1° C
    ±5° F
    ±3° C
    Type K-58° to 2300° F
    -50° to 1260° C
    ±2° F
    ±1° C
    ±4° F
    ±2° C
    Type T-292° to 700° F
    -180° to 371° C
    ±2° F
    ±1° C
    ±13° F
    ±7° C
    Type T
    0.1° Res
    -199.9° to 700.0° F
    -180.0° to 371.0° C
    ±1.8° F
    ±1° C
    ±13° F
    ±7.2° C
    Type E-58° to 1578° F
    -50° to 870° C
    ±2° F
    ±1° C
    ±11° F
    ±6° C
    100 Ω RTD-328° to 1382° F
    -200° to 750° C
    ±1° C
    ±3° C


    Rating: 2 Form C (SPDT); rated 3 A @ 30 VDC or 3 A @ 250 VAC resistive load; 1/14 HP @ 125/250 VAC inductive loads
    Deadband: 0-100% FS, user selectable
    High or Low Alarm: User may program any alarm for high or low
    Relay Operation:

    1. Automatic (non-latching)
    2. Latching
    3. Pump alternation control

    Relay Reset: User selectable via front panel buttons or PC

    1. Automatic reset only (non-latching)
    2. Automatic plus manual reset at any time (non-latching)
    3. Manual reset only, at any time (latching)
    4. Manual reset only after alarm condition has cleared (latching).

    Automatic Reset: Relays reset when input passes the reset point
    Manual Reset: Front panel button, MeterView, Modbus registers
    Time Delay: 0 to 199 seconds, on and off delays; programmable
    Fail-Safe Operation: Programmable, independent for each relay. Relay coils are energized in non-alarm condition. In case of power failure; relays 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.

    Isolated 4-20 mA Transmitter Output

    Scaling Range: 1.00 to 23.00 mA; reverse scaling allowed.
    Calibration: Factory calibrated 4.00 to 20.00 mA
    Accuracy: ±0.1% FS ±0.004 mA
    Temperature Drift: 50 PPM/°C
    Note: Analog output drift is separate from input drift
    Isolation: 500 V input-to-output or output-to-24 VDC supplies; 4 kV output-to-power line
    External Power: 35 VDC maximum
    Output Loop Resistance:

    Loop Resistance
    Power SupplyMinimumMaximum
    24 VDC10 Ω700 Ω
    35 VDC (external)100 Ω1200 Ω

    Serial Communications

    Compatibility: EIA-232, EIA-422, and EIA-485 with PDA7232 and PDA7422 Trident adapters.
    Protocol: Two selectable. PDC protocol (for use with MeterView) and Modbus RTU
    Meter Address: PDC protocol: 0 to 99, Modbus protocol: 1 to 247
    Baud Rate: 300 to 19,200 bps
    Transmit Time Delay: Programmable 0 to 199 ms or transmitter always on for RS-422 communications.
    Data: 8 bit (1 start bit, 1 stop bit)
    Parity: None (2 stop bits), even, or odd
    (Modbus only; PDC protocol does not use parity)
    Byte-to-Byte Timeout: 0.01 to 2.54 seconds (Modbus only)
    Turn Around Delay: Less than 2 ms (fixed)
    Refer to PDC and Modbus Serial Communications Protocol manuals for details.
    Note: Both downloadable protocol register tables can be found in the documentation list below.


    Pump Alternation

    PD765 Pump Alternation Step 1
    PD765 Pump Alternation Step 2

    Mounting Dimensions

    DC Voltage Digital Panel Meter, Mounting Dimension


    1. Panel cutout required: 1.772″ x 3.622″ (45 x 92 mm)
    2. Panel thickness: 0.040″ – 0.250″(1.0 – 6.4 mm)
    3. Mounting brackets lock in place for easy mounting

    MeterView® for Trident

    MeterView software allows remote programming and data acquisition of the Trident series. The remote programming allows for all available meter settings to be programmed from a personal computer through an easy user-friendly interface. The data acquisition allows the user to gather readings from up to 100 meters at user-selected intervals and generate charts using common tools like Microsoft® Excel.

    Digital Panel Meters make a great front end to a PC-based data acquisition system. They are easy to set up, can be used for a wide range of inputs, will power the transmitter, and best of all provide a local display of the process. Precision Digital has the perfect package with its Trident Digital Panel Meters, a wide selection of serial adapters and converters and free MeterView software. Data is displayed on the PC and written to a file that could then be imported into a spreadsheet or other application.

    Data Logging up to 100 Trident Meters

    Sample File Generated by MeterView®

    Great for tank level monitoring!


    Ordering Example: System consisting of 10 Tridents & MeterView

    10PD765-6R2-10Trident with 2 Relays & 24 VDC Transmitter Supply
    10PDA7422Trident RS-485 Serial Adapter
    1PDA8485-IUSB to RS-422/485 Isolated Converter
    1PDA7503-2MeterView Software for 1-10 Meters

    Data Sheet: LDS765 Datasheets

    Instruction Manual: LIM765_2 Instruction Manuals

    Quick Start Manual: LIM765QS Quick Start Manual

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