D20418-70

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D20418-70 is a multi-function digital thermometer and pressure gauge. It is suitable for measuring temperature and pressure in the range of -50°C to 200°C and 0-7Mpa, respectively. This instrument is widely used in the fields of aviation, shipbuilding, petroleum, chemical engineering, and metallurgy. It has the advantages of high accuracy, good stability, and fast response time.

The working principle of the D20418-70 thermometer and pressure gauge consists of four main parts. The first part is the sensing system, which consists of a resistance temperature detector (RTD) or thermistor, a piezoresistive pressure sensor, and an optical fiber temperature sensor. The RTD or thermistor is used to measure the temperature of the environment and convert the temperature signals into electrical signals, while the piezoresistive pressure sensor is used to measure the pressure signals and convert the pressure signals into electrical signals. The optical fiber temperature sensor can measure the temperature inside the D20418-70 thermometer and pressure gauge. The other three parts are the signal processing system, the display system, and the control system.

The signal processing system includes an on-board computer which processes the temperature and pressure signals received from the sensing system. The computer converts the analog signals into digital signals and sends them to the display system. The display system consists of a LCD screen and LED indicators that are used to display temperature and pressure readings. Finally, the control system receives the digital signals from the signal processing system and controls the thermometer and pressure gauge. Additionally, the control system also controls the data logging and archiving.

In summary, the D20418-70 thermometer and pressure gauge is a versatile and reliable instrument with high accuracy, good stability, and fast response time. It is widely used in the fields of aviation, shipbuilding, petroleum, chemical engineering, and metallurgy. It is composed of four main parts: sensing system, signal processing system, display system, and control system. It is an ideal instrument for measuring temperature and pressure in various environments.

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