PD6801 ProtEX-F&I Level Meter

Brand: Precision Digital Corporation

The ProtEX-F&I PD6801 is one of Precision Digital's most advanced and feature-packed explosion-proof, loop-powered indicators designed specifically for level applications that require a feet & inches display. 

The PD6801 can indicate up to 699 feet, 11 and 15/16 (or 7/8) inches. Like all ProtEX products, the PD6801 explosion-proof level indicator carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. 

It features a dual-line display that can be easily scaled in the field for any 4-20 mA analog input. 

Two features that really make the PD6801 stand out are its wide viewing angle display and SafeTouch® through-glass buttons. 

These buttons allow the PD6801 tank-side indicator to be programmed and operated through the glass, thus eliminating the need to remove the cover in a hazardous area.
  • Display Level in Feet & Inches
  • 4-20 mA Input Loop-Powered
  • Programmable 1/8 or 1/16 Inch Display
  • 20-Segment Tank Level Indicator
  • Lower Display for Tag, Volume, or Percent
  • SafeTouch® Through-Glass Button Programming
  • Open Collector Alarm Output
  • Loop-Powered or External DC-Powered Backlight Standard
  • Explosion-Proof, IP68, NEMA 4X Enclosure
  • Operates from -40° to 75° C


Approvals & Certifications

  • ATEX II 2 GD Ex D IIC T6 Gb Ex Tb IIIC T85° C Db
  • CSA Class I, Division 1, Groups B, C, D, Class II, Division 1, Groups E, F, G Class III, Division 1, T6 Class I, Zone 1, Ex D IIC T6
  • FM Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1, T6 Class I, Zone 1, AEx D IIC T6 Gb Zone 21, AEx Tb IIIC T85° C
  • IEC Ex D IIC T6 Gb Ex Tb IIIC T85° C Db

Conduit Connection

  • 3/4" NPT


  • 0 to 100% of Full Scale


  • 0.60" High

Enclosure, Body Material

  • Explosion-proof Die Cast Aluminum with Glass Window

Environmental Protection

  • IP66
  • IP68
  • NEMA 4X
  • NEMA 7
  • NEMA 9


  • 0 to 90% Non-Condensing


  • 4-20 mA

Operating Temperature

  • -40° to 75° C (-40° to 167° F)


  • 0.2 W
  • 0.25 W
  • 0.5 W
  • 0.75 W

Storage Temperature

  • -40° to 85° C (-40° to 185° F)

Supply Voltage

  • 9-36 Vdc

Voltage Drop

  • 3.0 Vdc at 20 mA with DC Powered Backlight
  • 6.0 Vdc at 20 mA with Loop-Powered Backlight

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