Digital Indicators and Panel Meters > Flow Totalization Indicators > Precision Digital PD684 and PD689 Loop Leaders


Precision Digital Loop Leader® PD684 and PD689 5-Digit Loop-Powered Flow Rate/Totalizers

Precision Digital PD684 and PD689 loop-powered rate/totalizers can display rate up to five digits and total up to eight digits using a total overflow feature. The display can be programmed to automatically or manually toggle between rate and total. Standard features include a backlit display with bar graph, on-screen custom engineering units, max/min display and open collector output.

Even packed with features, they're still easy to setup and get running. Everything is programmed from the front panel buttons with no pots or jumpers to deal with. In fact, they can be scaled without a signal source for quick setup. The PD684 is for general-purpose applications and the PD689 is FM and CSA approved for use in hazardous area applications.

Key Specifications

  • 4-20 mA Input, Open Collector Alarm or Pulse Output
  • 5 Digit LCD, 0.6" (15.2 mm) High, Custom Engineering Units and Bar graph, and Min/Max Display
  • Programmable Alternating Rate/Total Display, Overflow Displays Total up to 8 Digits
  • Square Root or Programmable Exponent
  • Type 4X, IP65 Front, Shallow Depth Case 3.2" Behind Panel
  • 2 V Drop (5.7 V with Backlight); Loop-Powered Backlight Standard

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 Number
Panel Mount Loop-Powered Flow Rate Totalizers with NEMA 4X Front Panels
Backlit 5 Digit LCD, 1/8 DIN
Backlit 5 Digit LCD, 1/8 DIN, FM/CSA Approved


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