Precision Digital PD4-6620 Loop Leader+ Large Display Loop-Powered Intrinsically Safe Flow Rate/Totalizer

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product code:PD4-6620

manufacturer:Precision Digital

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The Loop Leader+ loop-powered large display flow rate/totalizers can be installed virtually anywhere to provide convenient and informative display of any 4-20 mA signal. One of the most convenient features of these instruments is their large, dual-line display which is typically used to display flow rate on the 2.8″ 5-character alphanumeric top display and flow total, flow grand total, or a tag on the 1.5″ 8-character alphanumeric bottom display. Both display lines use 14-segment, alphanumeric characters that provide much clearer indication of tags, units, or alarm messages than 7-segment characters do. Further enhancing the display on these instruments is a 20-segment bar graph that also includes a numeric value of the percentage the bar graph represents.


The PD4-6628 is an intrinsically safe version that can be installed in hazardous areas.



  • Large Display NEMA 4X, IP65 Loop-Powered Wall & Pipe Mounted Flow Rate/Totalizers
  • 4-20 mA Input Displayed with ±0.02% FS Accuracy
  • 2.1 Volt Drop Maximum
  • 2.8″ (71 mm) 5 Alphanumeric 14-Segment Characters Top Display
  • 1.5″ (39 mm) 8 Alphanumeric 14-Segment Characters Bottom Display
  • 20-Segment Bargraph with Numeric Percent Indication
  • 8-Digit Total & Grand Total Display, Up to 13 Digits Using Both Lines
  • Display Rate & Total Simultaneously
  • Automatic or Manual Batch Control
  • Display Open Channel Flow with Programmable Exponent Feature
  • 32-Point Linearization & Square Root Extraction
  • (2) Open Collector Outputs Standard; Assignable to Pulse, Alarm, Timer, or Stopwatch
  • (2) Optional Loop-Powered Solid-State Relays; Assignable to Alarm, Control, Timer, or Stopwatch
  • Stopwatch & Timer Functions to Drive Relays & Open Collectors
  • Optional Isolated 4-20 mA Analog Output
  • Display Relay Runtime & Cycle Count via Relay Info Menu
  • Free PC-Based MeterView XL USB Programming Software
  • Externally DC Powered Backlight with Red Backlight for Alarm Conditions
  • Operating Temperature Range: -40 to 75°C (-40 to 167°F)
  • Conformal Coated PCBs for Dust & Humidity Protection
  • ATEX and IECEx Certified as Intrinsically Safe
  • Pipe Mounting Kit Available
  • 3-Year Warranty

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