Online Determination on of H2S Gas

Online H2S

Online Determination on of H2S Gas

Category: Water & Environment Analyzers

Brand: ECH Elektrochemie Halle GmbH


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).

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