Dust measurement after filters


Provides continuous measurement values for dust concentration as a trend signal or absolute values

The ProSens has been specially developed to carry out reliable dust measurement on clean sides after filters.
The measuring device provides measurement values for dust concentration, either as a trend signal or as absolute values (after calibration) for emission measurement.

  • Separated version for continuous dust quantity measurement (mg/m3)
  • Dust measurement possible in large channel diameters
  • Output of dust concentration as absolute value
  • ATEX-certified
  • Measurement of dust concentration at high temperatures
  • Trend signal or absolute value

ProSens is used:

  • if the dust concentration is to be output as an absolute value in mg/m3.
  • for exact measurements even with large channel diameters.
  • for applications in explosion hazard zones (GasEx-Zone 1, DustEx-Zone 20)
  • for the measurement of dust concentration even at high temperatures in various industries such as:
  • Steel
  • Chemistry
  • Food
  • Cement
  • Minerals
  • Pharma

Application examples:

[everest_gallery alias=”ProSens-applications”]
  • Output: absolute value in mg/m3
  • For exact measurement even with large channel diameters
  • Measurement of dust concentration even at high temperatures
Sensor Technical Data
Measuring objects Particles in the gas flow
Measuring range From 0.1 mg/m³
Process temperature Standard: 150 °C;
optional: max. 700 °C
Pressure Max. 2 bar (Optional: up to 25 bar)
Flow speed Min. 4 m/sec
Humidity 95 % rel. hum. or less
Measuring principle Electrodynamic technology
Ambient temperature -20…+ 60 °C
Sensor rod Material: stainless steel;
length: 500 / 1000 mm
Housing Aluminium
Protection type IP 66; ATEX: cat. 1/2 GD
Electric connection Connection room DIN M 20
Measurement value alarm
relay output
Relay with switching contact
Max. 250 V AC, 1 A
Not for EX-devices Cat. 1 and 2
Weight Approx. 1.5 kg
Transmitter Technical Data
Power supply 24 V DC ±10 %
Power consumption 20 W / 24 VA
Protection type IP 40 to EN 60 529
Ambient operating temperature -10 … +45 °C
Dimensions (W x H x D) 23 x 90 x 118 mm
Weight Approx. 172 g/td>
DIN rail fastening DIN 60715 TH35
Connection terminals cable
0.2-2.5 mm2 [AWG 24-14]/td>
Current output 1 x 4 … 20 mA (0 … 20 mA),
load < 500 Ω
Interface ModBus RTU (RS 485) / USB/td>
Pulse output Open collector – max. 30 V, 20 mA
Relay contact Max. rated load:
250 V AC
Max. peak current:
6 A
Max. rated load 230 V AC:
250 VA
Max. breaking capacity DC1:
3/110/220 V: 3/0.35/0.2 A
Min. switching load:
500 mW (10 V / 5 mA)/td>
Data backup Flash memory
  • DustEx:
    II 1/2D Ex ia/tb IIIC Tx* °C Da/Db* electronics / housing
    Zone 20: -20 °C _< Tprocess _< 250 °C Zone 21: -20 °C _< Tamb _< 60 °C
  • GasEx:
    II 1/2G Ex ia/d IIC T4* Ga/Gb* electronics / housing
    Zone 0: -20 °C _< Tprocess _< 250 °C Zone 1: -20 °C _< Tamb _< 60 °C

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