Product Introduction

ME5-H2S Hydrogen Sulfide Gas Sensor

Principle Introduction:
Strong First Electronics, as a professional gas sensor manufacturer, produce H2S/ hydrogen sulfide sensor, using fuel cell / electrochemical working principle.
ME5-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 :

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)


Reference Circuit :