Product Description



The SWG100 Bio EX Stationary Biogas Analyzer can be used in hazardous area zone 2, with compliance to EN 60079-0, EN 60079-15 and cabinet and marking II 3G Ex nA nC IIC T3 Gc.



The biogas analysis system SWG100 Biogas-Ex is the rugged, ready to use industrial gas analyser for:

  • Biogas (anaerobic digestion) plants. Ethanol plants, pulp & paper plants
  • Cogeneration heat and power engines (CHP)
  • Biomethane plants
  • Landfill gas monitoring and CHP
  • Municipal or industrial waste water treatment plants
  • Coal seam gas sites
  • IP 65 stainless steel cabinet, special construction for use in hazardous area zone 2
  • Electric sample gas cooler and condensate draining pump
  • Regulated sample gas pump with sample gas flow monitoring and adjustment
  • Internal sample flow sensor with filtration od acid sample gas in front of sensor
  • Solenoid valve for auto-zero (with clean ambient air) and for automatic calibration
  • Sample gas supply cut-off in case of system alarm
  • All stainless steel gas connectors 1/8″ID threads
  • Flow restrictor orifice gas inlet for high pressure site
  • Multiple sampling point monitoring (up to 4 sites Monitoring) with one analyzer
  • All password protected, intuitive software guided menu with diagnosis software and logbook


Technical specifications

Measuring ranges
O2 0 … 25 % (long life) electrochemical
CH4 0 … 100% NDIR
CO2 0 … 100% NDIR
H2S low 0 … 50 ppm / overload up to 250 ppm / electrochemical
0 … 2,000 ppm / overload up to 5,000 ppm / electrochemical
H2S high 0 … 10,000 ppm / overload up to 50,000 ppm / electrochemical
H2 0 … 1,000 ppm / overload up to 2,000 ppm / electrochemical
CO 0 … 10,000 ppm / overload up to 20,000 ppm / electrochemical


Dimensions and other data
Operating temperature 41°F to 113°F (+5 … 45°C) or -4°F to 113°F (-20°C … +45°C) with cabinet heater
Display 3,5″ TFT color display
Interfaces RS485 interface (modbus RTU); 4x analog output 4-20 mA, floating, max. load 500R; 2 alarm relays, potential free contacts 24 Vdc/5 A; DIN-rail RS485 / ProfiBus converter
Ex classification cabinet marking II 3G Ex nA nC IIC T3 Gc, compliance to EN 60079-0 and EN 60079-15
Power supply 230 Vac / 47 … 63 Hz / 90 W (115 Vac power supply on request)
Protection IP 65
Dimensions 27.55” x 23.61” x 8.26” (700x600x210 mm) (HxWxD) = interior steel enclosure
Weight approx. 88lbs (40 kg)


Check out our other products for more information HERE

Read the brochure of the SWG 100 BIO EX Stationary Biogas Analyzer HERE.


Learn more about the specifications for each gas analyzer in our inventory at!

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