Digital Indicators and Panel Meters > Process Signal Indicators > Precision Digital PD644 Javelin D


Precision Digital PD644 Javelin D High-Voltage DC Panel Meter

Precision Digital's PD644 Javelin D is an easy-to-use voltmeter with a built-in 4-20 mA isolated transmitter and RS-485 serial communication capability. It's ideal for speed measurement in variable frequency drive applications where a 0-90 VDC input displays as 0-1750 RPM. An optional Form C relays can be used for alarm indication or process control applications.

The Modbus® RTU serial communication upgrade lets the Javelin D operate as a slave in RS-485 multipoint data acquisition systems. Four front-panel buttons provide quick, simple setup and programming. There are no jumpers, and you'll never need to open the case for configuration. After you've set up one meter, you can clone configuration and transfer it to any other PD644 using the Copy function and PD MeterCopy.

Key Specifications

  • 0-300 VDC Input, 4-20 mA Analog Output and RS-485 Serial Communications
  • Two Form C 3-Amp Relays and Modbus® RTU Available as Options
  • 1/8 DIN Shallow-Depth Enclosure with NEMA 4X, IP65 Front
  • Sunlight-Readable 4-Digit Display with 0.56" (14mm) Tall Red LEDs, Scale in Engineering Units
  • Compatible with MeterView® for Data Acquisition and MeterCopy for Transferring Configuration to Multiple Units
  • Replaces Retired Precision Digital Model 694 0-200V Panel Meter

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Description Catalog
PD644 Javelin D High Voltage DC Input Panel Meter, 85-265 VAC Powered 
PD644 Meter, 24 VDC Transmitter Power
PD644 Meter, 2 Relays, 24 VDC Transmitter Power
PD644 Javelin D High Voltage DC Input Panel Meter, 12-36 VDC Powered 
PD644 Meter, No Options
PD644 Meter, 2 Relays
NEMA 4X Thermoplastic Enclosure for One Unit
NEMA 4X Clear Plastic for One Unit


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