MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms

Name: MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms
Brand: ShenzhenYijiajie Electronic Co., Ltd.
SKU: MQ137 MQ-137
Price: 18.00 USD
Availability: InStock

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MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms

Large Image : MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms

Product Details:

Place of Origin:	CN
Model Number:	MQ137 MQ-137

Payment & Shipping Terms:

Minimum Order Quantity:	1PCS
Price:	Negotiable
Packaging Details:	Standard packaging
Delivery Time:	5-8 work days
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	5000PCS

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MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms

Description

Detection Range:	5 - 500 Ppm NH₃	Standard Circuit Conditions:	≤ 24 V DC
Heater Voltage (Vh):	5.0 V ± 0.1 V AC Or DC	Heater Resistance (Rh):	29 Ω ± 3 Ω
Heater Consumption (Ph):	≤ 900 MW	Operating Temperature:	- 10℃ - 45℃
Highlight:	MQ137 semiconductor gas sensor , NH₃ gas alarm sensor , domestic gas sensor with warranty

MQ137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms

Working Principle:

The sensitive material SnO₂ of the MQ137 gas sensor has lower conductivity in clean air. When ammonia gas is present, the sensor's conductivity increases with the rise of gas concentration. Users can convert the change of conductivity into a corresponding output signal of gas concentration through a simple circuit.

Applications:

Domestic NH₃ gas alarms
Industrial NH₃ gas leakage alarms
Portable NH₃ gas detectors

Parameter	Symbol	Value	Unit	Remarks
Detection Range	-	5 - 500	ppm	For NH₃
Standard Circuit Conditions (Loop Voltage)	Vc	≤ 24	V DC	-
Heater Voltage	Vh	5.0 V ± 0.1 V	-	AC or DC
Load Resistance	Rl	Adjustable	-	-
Heater Resistance	Rh	29 Ω ± 3 Ω	-	At room temperature
Heater Consumption	Ph	≤ 900	mW	-
Sensitivity	S	Rs (in air)/Rs (50 ppm NH₃) ≥ 2	-	-
Output Voltage	△Vs	≥ 0.5	V	In 50 ppm NH₃
Concentration Slope	α	≤ 0.6	-	R₂₀₀ ppm/R₅₀ ppm NH₃
Standard Test Temperature	-	20℃ ± 2℃	-	-
Standard Test Humidity	-	55% ± 5%	RH	-
Pre-heat Time	-	Over 48	hours	-
Operating Temperature	-	-10 - 45	℃	-
Storage Temperature	-	-20 - 70	℃	-

MQ137 MQ-137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms 0

Tag:

Contact Person: Miss. Xu

Tel: 86+13352990255

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