Principle Introduction:
Winsen Electronics, as a professional gas sensor manufacturer, produce H2S/ hydrogen sulfide sensor, using fuel cell / electrochemical working principle.
ME4-H2S hydrogen sulfide gas sensor is constant potential electrolysis type. Oxidation-reduction reaction with hydrogen sulfide and oxygen take place respectively on the working electrode and on the counter electrode. The process releases electric charge and generates current. The current is in direct proportion to the concentration of hydrogen sulfide. So the concentration of the target gas could be got by measuring the value of current.

Applications :
It is used for hydrogen sulfide detection in industrial occasions, mine and environmental protection field.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Detection Gas	Hydrogen Sulfide(H2S)
Detection Range	0～100ppm
Max range	500ppm
Sensitivity	(0.8±0.15)µA/ppm
Resolution	0.1ppm
Response Time(T90)	＜30S
Bias Voltage	0mV
Load Resistance	10Ω(recommended)
Repeatability	＜2﹪Output value
Stability(/month)	＜2﹪
Output Linearity	Linear
Zero drift(-20℃～40℃)	≤0.2ppm
Temperature range	-20℃～50℃
Humidity range	15﹪～90﹪RH
Pressure range	standard atmospheric pressure±10﹪
Lifespan	2years(in air)

Dimensions:

Reference Circuit :

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