سنسور تشخیص گاز مونوکسید کربن MQ-7

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.
MQ-7 gas sensor has high sensitity to Carbon Monoxide.
The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application.
Features
Good sensitivity to Combustible gas in wide range
High sensitivity to Natural gas
Long life and low cost
Simple drive circuit
Application
Domestic gas leakage detector
Industrial CO detector
Portable gas detector