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MQ-8 Hydrogen H2 Gas Sensor A Must-Have for Gas Monitoring Systems

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MQ-8 Hydrogen H2 Gas Sensor A Must-Have for Gas Monitoring Systems

Model Number : MQ-8

Place of Origin : CN

MOQ : 1

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000pcs

Delivery Time : 3-5work days

Packaging Details : Paper box

Model : MQ-8

Sensor Type : Semiconductor

Standard Encapsulation : Bakelite, Metal cap

Target Gas : Hydrogen

Detection range : 100～1000ppm(H2 gas)

Heater Voltage : 5.0V±0.1V AC or DC

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MQ-8 Hydrogen H2 Gas Sensor

Profile :

Sensitive material of MQ-8 gas sensor is SnO2,which with lower conductivity in clean air. When hydrogen gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit. MQ-8 gas sensor has high sensitivity to hydrogen gas, also has anti-interference to other gases. This sensor can detect hydrogen, especially city gas. It is a kind of low-cost sensor for kinds of applications.

Features :

It has good sensitivity to hydrogen gas in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc.

Main Applications :

It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.

Model			MQ-8
Sensor Type			Semiconductor
Standard Encapsulation			Bakelite, Metal cap
Target Gas			Hydrogen
Detection range			100～1000ppm(H2 gas)
Standard Circuit Conditions	Loop Voltage	Vc	≤24V DC
	Heater Voltage	VH	5.0V±0.1V AC or DC
	Load resistance	RL	Adjustable
Sensor character under standard test conditions	Heater Resistance	RH	30Ω±3Ω(room tem.)
	Heater consumption	PH	≤950mW
	Sensitivity	S	Rs(in air)/Rs(in 1000ppm H2)≥5
	Output Voltage	Vs	2.5V～4.0V (in 1000ppm H2)
	Concentration Slope	α	≤0.6(R1000ppm/R400ppmH2)
Standard test conditions	Tem. Humidity		20℃±2℃；55%±5%RH
	Standard test circuit		Vc:5.0V±0.1V； VH:5.0V±0.1V
	Preheat time		Over 48 hours
O2 content			21%(not less than 18%) O2 concentration effects initial value, sensitivity and repeatability
Life span			10 years

MQ-8 Hydrogen H2 Gas Sensor A Must-Have for Gas Monitoring Systems

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