MQ138-CM(5.2)/CCT

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The MQ138-CM(5.2)/CCT is a sensing device for various applications. It is comprised of a MOS type (Metal Oxide Semiconductor) field effect transistor and a capacitive circuit for the detection of gases or other substances. In its simplest form, a capacitor is placed between the gate and source of the MOSFET which is then exposed to the environment, enabling the sensitivity of the device to a given gas or other substance.

The working principle of the MQ138-CM(5.2)/CCT is based on the changes of the capacitance caused by a given gas or other substance, which is detected by the FET. The gate capacitance of the FET will decrease due to the depletion of the oxide layer caused by the absorption of the gas or other substance. This depletion causes a decrease in the conduction level of the MoS transistor and a lowering in the capacitance due to the decrease in gate voltage, leading to a change in the electrical resistance of the device.

The MQ138-CM(5.2)/CCT can be used for various applications such as environmental monitoring, food safety, industrial controls, and medical diagnostics. In particular, it can be used in the monitoring of greenhouse gases, volatile organic compounds (VOC), and air pollution. The device can detect the presence of these gases and other substances by measuring the change in capacitance due to their presence. By monitoring these gases and other substances in various environmental conditions, it can help to identify problems and allow for proactive measures to be taken in order to prevent the pollution from worsening.

The MQ138-CM(5.2)/CCT can also be used in food safety applications. It can detect the presence of various gases such as carbon dioxide, ethylene, and carbon monoxide. This can help to identify whether food products are contaminated by harmful substances, which can be used to ensure the safety of food products and prevent health problems.

The MQ138-CM(5.2)/CCT can also be used as an industrial control device. It can be used to monitor the presence of various gases, such as hazardous gases, which can help to identify potential hazards and allow for proactive measures to be taken in order to prevent accidents or injury. It can also be used to detect the presence of pollutants which can be monitored in order to comply with environmental legislation.

In addition, the MQ138-CM(5.2)/CCT can be used in medical diagnostics. It can be used to detect the presence of various gases and chemicals in the body, such as oxygen and carbon dioxide, which can help to identify medical conditions and allow for preventative measures to be taken. In particular, it can be used to detect biochemical markers which can be used to diagnose certain medical conditions.

In conclusion, the MQ138-CM(5.2)/CCT is a versatile sensing device with a range of applications across a variety of industries. From environmental monitoring to food safety and medical diagnostics, the MQ138-CM(5.2)/CCT can be used to detect a range of gases and other substances, allowing for proactive measures to be taken in order to prevent harm or damage.

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