eBay

MQ-7 Semiconductor Sensor for CO Gas Sensor Carbon monoxide Sensor

Product information

Description:

Sensitive material of MQ-7 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensor’s conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

Character:

1. High sensitivity to Natural gas

2. Long life and low cost

3. Simple drive circuit

Application:

1. Domestic gas leakage detector

2. Industrial CO detector

3. Portable gas detector

Technical Data:

Model No.			MQ-7
Sensor Type			Semiconductor
Standard Encapsulation			Plastic
Detection Gas			Carbon Monoxide
Concentration			10-10000ppm CO
Circuit	Loop Voltage	Vc	≤10V DC
	Heater Voltage	VH	5.0V±0.2V ACorDC（High） 1.5V±0.1V ACorDC（Low）
	Heater Time	TL	60±1S（High）90±1S（Low）
	Load Resistance	RL	Adjustable
Character	Heater Resistance	RH	31Ω±3Ω（Room Tem.）
	Heater consumption	PH	≤350mW
	Sensing Resistance	Rs	2KΩ-20KΩ(in 100ppm CO )
	Sensitivity	S	Rs(in air)/Rs(100ppm CO)≥5
	Slope	α	≤0.6(R300ppm/R100ppm CO)
Condition	Tem. Humidity		20℃±2℃；65%±5%RH
	Standard test circuit		Vc:5.0V±0.1V； VH（High）: 5.0V±0.1V； VH（Low）: 1.5V±0.1V
	Preheat time		Over 48 hours

Package Include:

1pcs

Payment

Payment	Payable To	Note
PayPal	Paypal	All payments are due within 7 days of the close of auction. Failing to do so, non-paying bidders will be reported to eBay.

Shipping Policy

Delivery Time	We ship to worldwide, it usually takes 10-30 Business Days to delivery.
Shipping address	We ship to your PayPal address. Please, make sure to provide us with correct, precise, and detailed shipping Address.
Send Time	Items will be shipped within 1 to 3 business days upon payment received or cleared.
Note	If you don't receive items over 30 business days, please notify us via eBay message.

Return Policy

We appreciate your business and offer an instant 7 days return policy.(7 days after receive the item). The returned item has to be in its original condition. We are able to refund your money without shipping cost.

For anything about product, price, shipping or order status, please contact us via eBay message.
We love positive feedback and 5 scores DSR. We will leave it for everyone that leaves it for us.