Pt100 temperature sensor
measurement pt100 temperature sensor, which is a kind of stability and linear are good platinum thermal resistance sensor can work in -
The range of 200 ℃ to 650 ℃.
To ensure more accurate measurement results, not only to guarantee the quality of PT100 temperature sensor, but also need to adopt the correct measuring method.
So in order to make the results more * *, pt100 temperature sensor measurement method is what?
1, constant current, constant voltage method: in the traditional instrument, generally in this way, after the construction of constant current or constant voltage method, using ohm's law, and calculate the Pt100 resistance, then the query indexing table, temperature.
* this method is simple and general.
2, common sensor interface UTI method: this method is very suitable for microprocessor-based (
System, UTI all information only through a MCU compatible signal output, so that greatly reduced the schism between modules outside wiring and coupler.
Traditional method is simple, but there are a lot of shortcomings.
Use common sensor interface chip, only need a reference resistor is not sensitive to temperature, Pt100 connected to UTI circuit, can be obtained by MCU Pt100 and reference the proportion of resistance, resistance and temperature is obtained.
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Basically, you cannot have a custom thermistor without having the right temperature sensor. Since you are going to use it regularly, be sure to invest in one that has a high quality.
Many of the temperature sensor listed here can be purchased for less money, but in general we recommend paying a slightly higher price for significantly improved performance. These are our top choices and their recommended configurations.
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