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MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education in Kuwait

MQ137 5V Signal Output Indication Dual Signal Output Ammonia NH3 Gas Sensor for School Learning Education

KWD 10
– 1 +

Special Features

  • Features a signal output indicator light
  • Dual-channel signal output (analog output and TTL level output)
  • The effective signal of TTL output is low level. (The signal light is on when low level is output, which can be directly connected to the single-chip microcomputer.)
  • Analog output is 0~5V voltage, and the voltage increases with the increase of concentration.
  • High sensitivity to ammonia gas, and also ideal for monitoring other organic amines (such as trimethylamine, ethanolamine, etc.).

Description

Sensor Type: Semiconductor.
Standard Encapsulation: Bakelite, Metal cap.
Target Gas: Ammonia Gas(NH3)
Detection range: 5～500ppm NH3
Tem:20℃±2℃;
Humidity:55%±5%RH;
Standard test circuitVc:5.0V±0.1V；VH: 5.0V±0.1V
Preheat time Over 48 hours
Loop Voltage: ≤24V DC;
Heater Voltage: 5.0V±0.1V AC or DC;
Load Resistance:Adjustable;
Heater Resistance:29Ω±3Ω(room tem.);
Heater consumption: ≤900mW;
Sensitivity:Rs(in air)/Rs(50ppmNH3)≥2;
Output Voltage:≥0.5V (in 50ppm NH3);
Concentration Slope:≤0.6(R200ppm/R50ppm NH3);
NOTE: The change of Output voltage is the;difference value between VRL in test environment.

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