Online H2S - Hydrogen sulphide in gases   

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OnlineH2S    
Analyzer for online determination
of H2S in gases		    
     
     

The OnlineH2S is used for the continuous quantitative determination of hydrogen sulphide (H2S) in gas mixtures.

The system is designed with an integrated dilution step for measurement of very high concentrations (100 - 20000 ppm). Also very low contents in the range of odour treshold (0.1 - 100 ppm) can be measured.

The OnlineH2S contains a selective amperometric sensor with gas selective membranes, membrane pumps for gas transportation and sample transfer and an integrated PC for continuous recording of measurement data, trends and alarm states. The measurement values can be transmitted via digital (alarm-) and analog outputs into the control room.

Due to an integrated cleaning system the gas analysis in O2 free gases (e. g. biogas) is realized without any drift effects. Because of the stress free mode of operation, the sensor lifetime is considerable increased.

The operation principle makes the OnlineH2S ideal as a basis for H2S adjusted regulation of enrichment and cleaning steps.

The instrument is available in the same design for monitoring of ammonia gas (NH3), sulfur dioxide (SO2) or ozone (O3).

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Advantages

  • Continuous H2S determination in gases (measurement duration < 5 min)
  • Robust method of analysis
  • Automatic sample dosing
  • Easy calibration steps
  • Selective electrochemical sensor with no cross-sensitivity
  • Software easy-to-use
  • Output value of H2S as a 4 - 20 mA signal for integration into the local control system
  • Long lifetime of the sensors due to the intermittent gas switching
  • Integrated rinsing steps for measuring of continually fresh samples
  • Active sample intake of the gas up to a distance of 100 m – variable setup of device (wall mounted)
  • Also available for determination of ammonia gas (NH3), sulphur dioxide (SO2) or ozone (O3)

 

Technical specifications

Sample transfer over an up to 100 m long distance

Measuring points: Max. 2
Dosing volume: 0.1 - 100 mL (depending on application)
Sample pressure: Ambient or pressurized
Typical measuring time: < 5 min (depending on sample)
Measuring range: 0.1 ppm - 20000 ppm (2 %)
Gas supply: Internal pump  or pressure controller
Alarm: Dry contact
Interface: 4 – 20 mA
Power supply: 220 - 230 V, 50 Hz, 2 A
Power input: 100 W
Protection type: IP66
 

Applications

  • Online determination of the current H2S concentration as basis for adjusted regulations (e. g. pump sump, gravity pipeline, collecting tank)
  • Processes of anaerobic digestion, fermentation processes
  • Environment analysis
  • Wastewater analysis
  • Monitoring of landfill leachate

Fields of applications:

  • Municipal association for sewage treatment
  • Industrial sectors
  • Biogas plants
  • Petroleum processing

ordering information

 

Dimensions

Dimensions: 660 x 250 x 400 mm (B x T x H)
Weight of the device: 9 kg