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FWE200
 
 
Extractive scattered light technology for measurement of dust in wet gases
The FWE200 is designed to measure dust concentrations in wet flue gas. The gas is extracted via a sampling probe and heated above dewpoint. Because any droplets in the gas are vaporized they cannot falsify the measurement results. The scattered light principle enables even minimal dust concentrations to be measured.
Applications
  • Monitoring of wet scrubber facilities
  • Measurement in saturated gas downstrem of desulfurization plants
  • Determination of dust concentrations in humid exhaust air
 
Technical specification
  Measuring principle   Scattered light forward  
  Measuring ranges   Dust content: 0 ... 5 mg/m³ / 0 ... 200 mg/m³  
  Process temperature   PVDF probe: 0 ... 120 °C (32 ... 248 °F)
Hastelloy probe: 0 ... 220 °C (32 ... 428 °F)
 
  Process pressure   -20 ... 20 hPa  
  Process gas velocity   4 ... 20 m/s (13.1 ... 65.6 ft/s)  
  Process gas humidity   Max. 10 g/m³ liquid water without water vapor  
  Ambient temperature   -20 ... 50 °C  
  Ambient humidity   0 ... 95 %, relative humidity, non-condensing.  
  Conformities   2000/76/EC, 2001/80/EC, 27. BImSchV., MCERTS, German Clean Air Regulations, U.S. EPA compliant  
  Electrical safety   CE  
  Enclosure rating   IP 54
Electronics enclosure: IP 65
 
  Analogue outputs   1 output:
0/2/4 ... 20 mA, 750 Ohm;
electrically isolated; second output as an option
 
  Digital outputs   4 relay contacts:
250 V, 1 A;
preset for malfunction, warning, limit value and
maintenance
 
  Digital inputs   1 input;
floating contact for maintenance switch
 
  Interfaces   RS-232  
  Device type   Cross duct type  
  System components   Sampling probe, measuring and control cabinet, blower unit  
  Test functions   Automatic check of zero and reference point  
     
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