ProSens - Stofmeting

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ProSens -
Stofmeting / stofdetectie

De ProSens is speciaal ontwikkeld om een betrouwbare wijze de stofuitstoot achter industriële filters te meten.

  • Stofmeting ook in grote kanaaldiameters
  • Betrouwbare stofemissiemeting
  • ATEX-gecertificeerd
  • Meting van de stofconcentratie bij hoge temperaturen
  • Trendsignaal of absolute waarde
  • Meting van de stofconcentratie als absolute waarde in mg/m3






ProSens was 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 for emission measurement.

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.


Basic principle of the ProSens is the electrodynamic effect.
If the dust to be measured is constant, then the generated measuring signal is proportional to the dust concentration, even if there are dust deposits on the measuring probe. Experience shows that the measuring method provides very exact results with little required maintenance.

A complete measuring system consists of these components:

  • Welded casing to serve as a sensor receptacle
  • PMS sensor
  • Transmitter PME 100

This unit can be supplied in a field housing with touch panel display or as a DIN rail version.
In case of a DIN rail version also a software for parameter setting will be supplied.

Mounting and Installation

The ProSens can be installed in metal channels and pipelines. 
The installation should take place away from any curves and other inserts such as flaps and valves. 
The distance between the sensor rod and inserts in the channel should be at least 3 times the channel diameter in every flow direction. 
Non-metallic channels must be sheathed using a metal sleeve, a metal foil or a close-mesh metal grid over a length of at least 5 times the channel diameter.

After determining the installation location, a hole must be drilled in the channel wall to insert the welding casing flush. The casing is now welded into place vertically to the channel. The sensor rod is then inserted in this and fastened with a fixing screw. The length of the sensor rod is at least 1/3 and at most 2/3 of the channel diameter. 
It can be shortened to the respective optimal length (up to 70 mm) without a problem.

Technical Data

Sensor Process measurement Solid particles in a gas flow
  Measurement range from 0.1 mg/m³
  Process temperature 150 °C (higher temperatures on request)
  Pressure max. 2 bar
  Gas velocity min. 4 m/s
  Humidity 95 % rel. hum. or less
  Measurement principle Electrodynamics
  Ambient temperature - 20... +60 °C
  Sensor rod Stainless steel; length 500 or 1,000 mm
  Enclosure Aluminium
  Protection category IP 66; ATEX; cat. 1/2 GD
  Electric connection Connection room DIN M 20
  Weight Approx. 1.5 kg
Transmitter Power supply 110 / 230 V, 50 Hz, 24 V DC
  Power consumption 12.5 W
  Current consumption max. 1 A at 24 V
  Protection category IP 65 acc. to EN 60 529/10.91
  Operating temperature - 10... + 60 °C
  Dimensions 258 x 237 x 174 (W x H x D)
  Weight approx. 2.5 kg
  Interface RS 485 / RS 232 C (ModBus)
  Cable glands 3 x M16 (4.5 - 10 mm Ø)
  Screw terminals 0.2 - 2.5 mm_ (AWG 24-14)
  Current output signal 4 ... 20 mA, load 500 Ω
  Measurement value alarm relay output Relay with switching contact max. 250 V AC, 1 A
  Data storage Flash
  Pulse output Open Collector - Max. 30 V, 20 mA

Application form

Application examples

Click on a desired application example to navigate to a detailed description.

Detection of metal dust
in a clear gas site after bag filter

Quantity measurement of filter dust
in clear gas pathes

Coal dust measurement 
furnace gas

Lime detection


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