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Dual gas sensor/sulfur dioxide/hydrogen sulfide sensor SOH-A2 detailed introduction:

1. Brief introduction of dual gas sulfur dioxide/hydrogen sulfide sensor SOH-A2:

The SOH-A2 sensor provides a unique method in terms of size and electrode structure. Using a high-capacity filter on the working electrode of sulfur dioxide can completely eliminate the cross-sensitivity of the channel to hydrogen sulfide, acid gas and nitrogen oxide. The use of SOH-A2 series sensors in portable instrument design can enable compound gases to achieve accurate factory-level maintenance and field-level calibration, without worrying about incorrect adjustment of SO2 channels。

2. The technical indicators of the sulfur dioxide channel of the SOH-A2 sensor:

Resolution: 0.05ppm

Response time: t90 (seconds) <15

Measuring range: 20 ppm

Zero current: <0.1ppm

Sensitivity: 160-250 nA/ppm, 10ppm SO2

Linearity: ND, 0-10ppm SO2 linear

Overload range: 50ppm/maximum concentration of stable response gas pulse

3.Technical indicators of the hydrogen sulfide channel of the SOH-A2 sensor:

Resolution: <0.1ppm

Response time t90 (seconds) <25

Measuring range: 200 ppm

Zero current: 0~-0.2ppm

Sensitivity: 450-900 nA/ppm, 20ppm H2S

Linearity: ND, 0-20ppm linear

Overload range: 500ppm/maximum concentration of stable response gas pulse