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MQ-135 Semiconductor air pollution sensor MQ135 Air quality pollution gas sensitive element

Products > Air Sensor > MQ-135 Semiconductor air pollution sensor MQ135 Air quality pollution gas sensitive element
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MQ-135 Semiconductor air pollution sensor MQ135 Air quality pollution gas sensitive element

Product model: MQ135
Product Type: Semiconductor gas sensor
Standard package: Bakelite (Black Bakelite)
Detection gas: ammonia, sulfide, benzene vapor
Detection concentration: 10-1000ppm (ammonia, toluene, hydrogen)
Standard circuit conditions
Loop voltage Vc: ≤24VDC
Heating voltage VH: 5.0V±0.2 V ACORDC
Load resistance RL: adjustable
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MQ-135 Semiconductor air pollution sensor MQ135 Air quality pollution gas
sensitive element
Specification
Product model: MQ135 Product Type: Semiconductor gas sensor Standard package: Bakelite (Black Bakelite) Detection gas: ammonia, sulfide, benzene vapor Detection concentration: 10-1000ppm (ammonia, toluene, hydrogen) Standard circuit conditions Loop voltage Vc: ≤24VDC Heating voltage VH: 5.0V±0.2 V ACORDC Load resistance RL: adjustable

Gas sensor characteristics under standard test conditions:

Heating resistance RH: 31ohm±3ohm (room temperature) Heating power consumption PH: ≤900mW Sensitive body surface resistance Rs: 2Kohm-20Kohm (in100ppm NH3) Sensitivity S: Rs(in air)/Rs(100p0mNH3)≥5 Concentration slope α: ≤0.6(R100pm/R50ppmNH3)
Standard test conditions:

Temperature and humidity: prefix=st120℃±2℃; 65%±5%RH Standard test circuit: vc: 5.0V±0.1V; VH: 50V±0.1V Warm-up time: no less than 48 hours

Product features

1. It has good sensitivity to harmful gases in a wide range of concentration. 2. It has high
sensitivity to ammonia, sulfide and benzene series 3. Long life, low cost 4. Simple driving circuit is enough

Application field

1. Household air pollution alarm 2. Industrial air pollution alarm 3. Portable air pollution detector
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