BPIT, Inc. - D-FW-230 / 231 Filter Monitor

D-FW-230 / 231 Filter Monitor

By: Durag

Triboelectric filter monitor for efficiency monitoring after filter plants and for continuous dust measuring in dry emissions

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  • Compact and rugged design
  • Good price/performance ratio
  • Ideal for monitoring bag filters
  • Minimal maintenance required
  • Early detection of filter malfunctions
  • Savings in cost, as no preventative filter exchange is necessary


  • Power stations
  • Bag filter plants of all types
  • Dust extraction plants in the production industry
  • Waste incineration plants
  • Crematoriums
  • ✖ Not suitable for use directly behind electro-static precipitators

System Versions:

D-FW 231 measuring probe

  • With complete electronics in the probe
  • Probe rod length 400 mm
  • Fitted via 1“(G1) thread

D-FW 230 filter monitor

  • D-FW 231 measuring probe: Probe rod length 400 mm
  • D-FW 230-B control unit with digital display 115/230V 50/60 Hz

D-FW 235 mobile filter monitor

  • D-FW 231filter monitor with 80, 250 and 400 mm probe length in a system case including a 3-channel paperless recorder.


Measurements: dust mass flow
Measuring ranges:


(flue gas velocity >5 m/s)
Measuring principle: tribo electric
Volume flow:

above dew point up to 200°C,

optional up to 500°C, flue gas humidity <80%
Flue gas temperature: -500 up to +500 hPa
Accuracy: <2% of measuring range
Detection limit: <2% of measuring range