Sainsmart MQ137 Semiconductor Sensor for Arduino UNO Mega2560 R3 Raspberry Pi

Product Code: 46204352
Product weight: 0.40 Pounds

Price: Rs:19028.00/-

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Important: We import products from the USA and ensure delivery within 3 to 4 weeks at your doorstep.

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Description

Sensitive material of MQ137 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ137 gas sensor has high sensitity to Ammonia, also to other organic amine. The sensor could be used to detect different gas which contains Ammonia, it is with low cost and suitable for different application.

Specifications:

* Model No.: MQ137
* Sensor Type: Semiconductor
* Standard Encapsulation: Bakelite (Black Bakelite)
* Detection Gas: Ammonia
* Concentration: 5-500ppm (Ammonia)

CIRCUIT
* Loop Voltage(Vc): ≤24V DC
* Heater Voltage(VH): 5.0V±0.2V AC or DC
* Load Resistance(RL): Adjustable

CHARACTER
* Heater Resistance(RH): 31Ω±3Ω（Room Tem.）
* Heater consumption(PH): ≤900mW
* Sensing Resistance(Rs): 2KΩ-15KΩ(in 50ppm NH3)
* Sensitivity(S): Rs(in air)/Rs(5000ppm CH4)≥5
* Slope(α): ≤0.6(R100ppm/R50ppm NH3)

CONDITION
* Tem. Humidity: 20℃±2℃；65%±5%RH
* Standard test circuit: Vc:5.0V±0.1V； VH: 5.0V±0.1V
* Preheat time: Over 48 hours

Manual: https://s3-ap-northeast-1.amazonaws.com/sain-amzn/20/20-011-993/MQ137.zip

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Answer: No, you can only place order online because we import from USA as get order.

Question: How much more time you will take to deliver, once you get my order?

Answer: After order confirmation we do our best to deliver in 3 to 4 week.

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Answer: We do our best to list exact prices of all products but since dollar fluctuate in Pakistan so sometime we update at the time of order confirmation.

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