Thermocouple temperature measurement circuit
Source: InternetPublisher:张三叔 Keywords: Thermocouple temperature measurement circuit AD Updated: 2021/05/06
It is a thermocouple temperature measurement circuit using AD 594C . In addition to the amplifier circuit, the AD594C chip also has a temperature compensation circuit.
For the J-type thermocouple, it can obtain an output of 10m.U℃ after laser trimming. The accuracy is ±1℃ in the measurement range of 0~300℃. If AD 5.
Connect the 94C output to the A/D converter to form a digital display thermometer. 2820B in the circuit is a voltage/ current converter, which converts the voltage signal amplified by the operational amplifier Al and
corresponding to the temperature into a 4~ZOmA current loop for long-distance transmission.
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