Principle Introduction:
Winsen Electronics, as a professional gas sensor manufacturer, produce electrochemical ammonia sensor, NH3 sensor for industrial use, using electrochemical working principle.
ME4-NH3 ammonia gas sensor is constant potential electrolysis type. Oxidation-reduction reaction with ammonia gas take place inside of the sensor. The process releases electric charge and generates current. The current is in direct proportion to the concentration of ammonia gas. So the concentration of the target gas could be got by measuring the value of current.

Applications :
For ammonia gas detection in industrial occasions and environmental protection field.

Technical parameters :

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

Detection Gas	Ammonia Gas(NH3)
Detection Range	0～50ppm
Max range	200ppm
Sensitivity	（0.12±0.03）µA/ppm
Resolution	0.1ppm
Response Time(T90)	≤90S
Bias Voltage	0mV
Load Resistance	10Ω(recommended)
Repeatability	＜10﹪Output value
Stability(/month)	＜10﹪
Output Linearity	Linear
Zero drift(-20℃～40℃)	-3～10ppm
Temperature range	-20℃～50℃
Humidity range	15﹪～90﹪RH (No condensation)
Pressure range	standard atmospheric pressure±10﹪
Lifespan	2 years（2ppmNH3）

Dimensions:

Reference Circuit :

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