The working principle and principle structure of the integrated temperature transmitter

1. Working principle It works by the measurement principle of hydrostatic pressure. The transmitter works on the measuring principle of hydrostatic pressure. It generally uses a silicon pressure pressure sensor to convert the measured pressure into an electrical signal, which is then amplified by an amplifier circuit and compensated by a compensation circuit, and then amplified by an amplifier circuit and compensated by a compensation circuit. The integrated temperature transmitter can have an actual vacuum, but is adjusted on the circuit processing link to obtain an absolute pressure. The gauge pressure measurement transmitter measures relative to the atmospheric pressure, which is equivalent to the atmospheric pressure reference atmospheric pressure P0. Relative to atmospheric pressure measurement, equivalent to reference atmospheric pressure. This is the case for most pressure measurements in the field, such as main steam pressure measurements, etc. This is the case for measurements, such as main steam pressure measurements, etc. Differential pressure measurement transmitter Differential pressure measurement transmitter is mainly divided into liquid level measurement and flow measurement. The differential pressure measurement transmitter is mainly divided into liquid level measurement and flow measurement. Second, the principle structure The thermoelectric potential (resistance) generated by the thermocouple (thermal resistance) passes through the bridge of the temperature transmitter to generate an unbalanced signal, which is converted into an unbalanced signal after amplification. The 4-20mA DC signal is sent to the working instrument, and the working instrument will display the corresponding temperature value. 3. Principle related features 1. Two-wire system 4~20mA DC output. Long transmission distance and strong anti-interference ability. 2. Cold end, temperature drift and nonlinear automatic compensation. 3. High measurement accuracy and good long-term stability. 4. The epoxy resin casting process is used inside the temperature module, which is suitable for use in various harsh and dangerous places. 5. Integrated design, simple and reasonable structure, can directly replace ordinary assembled thermocouple and thermal resistance. 6. Mechanical protection IP65. 7. The use of thermocouple temperature change can eliminate the need for compensation wires and reduce costs

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