Compact sensor for Broken Bag Detection

Dusty C

Continuously monitors particulate flow for signs of filter damage or broken filter bags. Compact and cost effective

The Dusty C has been specially developed to monitor clean sides after filters with high reliability and without time delay for filter breaks.
It can be used in metallic ducts in which dust particles will be detected in the gas flow. Its area of application begins at dust levels of 0.1 mg/m3.

Dusty C can be used in Ex zones (Dust zone 22 /Gas zone 2).
  • Detects all dust types
  • Can be used in all purge gas and dust ducts
  • Immediate detection of filter damages
  • Simple commissioning (Plug & Play)
  • Prevention of process-induced dust Ex zones
  • Individual choice of alarm level
  • Rapid and easy retrofitting
  • 4 … 20 mA output at sensor
  • Up to 250 °C
  • Aluminium
  • Cement
  • Chemistry
  • Electronics
  • Extraction
  • Fertilizer
  • Food
  • Glass
  • Granite
  • Mills
  • Products of carbon
  • Quartz sand
  • Wood
  • Metal
  • Building materials
  • Power plant
  • Surface purification
  • Automotive
  • Can be used in metallic ducts
  • Operational range: starts at dust levels of 0.1 mg/m3
Sensor Technical Data
Measurement items Solid particles in gas & dust ducts (flowstream)
Measurement range From 0.1 mg/m3
Process temperature Max. 140 °C, optional 250 °C
Ambient temperature – 20 . . . + 60 °C
Pressure Max. 2 bar
Flow velocity Min. 3 m/s
Humidity 95 % RH (non-condensing)
Measurement principle Electrodynamic
Attenuation time 1 s
Output signals • Current output 4 … 20 mA
• Relay output, either NC (break contact) or NO (make contact)
Sensor rod Total length: 260 mm
Stainless steel part: approx. 194 mm
Housing material Aluminium
Using in Ex-zones Cat. 3 G/D (zone 2 gas / zone 22 dust)
Protection category IP65
Voltage supply 24 ± 10 % V DC
Rating 1 W
Electrical connection Screw terminals /
Connection chamber
Installation Via ½“ screw-in thread
Weight Approx. 1 kg
  • DustEx: II 3D Ex ia/tc IIIC 120°C
  • GasEx: II 3G Ex ia/d IIC T4

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