MP-7 type carbon monoxide detection planar semiconductor gas sensor adopts advanced planar thick film production process. It is composed of heater and metal oxide semiconductor material formed on micro Al2O3 ceramic substrate. inside the cap. The high and low temperature cycle detection method is used to detect carbon monoxide (1.5V), and the impurity gas adsorbed at low temperature is cleaned at high temperature (5.0V). The conductivity of the sensor increases as the concentration of carbon monoxide gas in the air increases, and a simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
The MEu-2CO gas sensor is a fuel cell type sensor. Carbon monoxide and oxygen undergo corresponding redox reactions on the working electrode and the counter electrode and release charges to form a current. The generated current is proportional to the carbon monoxide concentration and follows Faraday's law. By measuring the current can determine the concentration of carbon monoxide.
The gas sensing material used in the MQ-7B carbon monoxide gas sensor is tin dioxide (SnO2), which has a low conductivity in clean air. The high and low temperature cycle detection method is used to detect carbon monoxide at low temperature (1.5V heating). The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.
The MQ-7B carbon monoxide gas sensor has high sensitivity to carbon monoxide. This sensor can detect a variety of carbon monoxide-containing gases and is a low-cost sensor suitable for a variety of applications.
The MEMS carbon monoxide gas sensor uses MEMS technology to make a micro-hot plate on a Si-based substrate, and the gas-sensing material used is a metal-oxide-semiconductor material with low conductivity in clean air. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.