What are the steps of using the PT100 temperature sensor?

The scale table of PT100 temperature sensorpt has different ohm values from negative 200 degrees Celsius to positive 600 degrees Celsius, and needs to be identified, recorded and calculated in the actual operation process.

How many wires are there on the outside of the PT100 temperature sensor?

What is the formula for calculating the resistance of PT100 temperature sensor to change with temperature?

How to debug PT100 temperature sensor in actual work?

How many wires are there on the outside of the PT100 temperature sensor?

2-wire, 3-wire and 4-wire are used, which are mainly determined by the secondary instrument used (selected). Generally, the display instrument provides a three-wire connection method. One end of the PT100 temperature sensor has one wire, and the other end has two wires, both of which are connected to the instrument, and the resistance of the wires is offset by the bridge inside the instrument.

What is the formula for calculating the resistance of PT100 temperature sensor to change with temperature?

-200<t<0℃ Rt=R0[1+At+Bt+C(t-100)t]

0<t<850℃ Rt=R0（1+At+Bt2）

Rt is the resistance value at t°C, and R0 is the resistance value at 0°C. The A, B, coefficients in the formula are experimentally determined. standard

The coefficient is: A=3.90802*10-3℃; B=-5.802*10-7℃; C=-4.27350*10-12℃

How to debug PT100 temperature sensor in actual work?

In actual work, the PT100 temperature sensor requires the power supply voltage of the circuit to be 5V±5%. If the measured display value is greater than a certain over-limit value, the corresponding control port will output a high level immediately. If the sensor has an open circuit fault, the display will show "HHH". If the sensor and its leads are short-circuited, the display will immediately show "LLL". In order to prevent the sensor from being open or short-circuited. The three control output ports will be closed first.

In order to meet the growing demand, T Sensor Tech has a variety of PT100 temperature sensors, which can increase the number of products and make products more efficient, reliable and consistent. We are doing our best to be a more professional, more reliable and temperature sensor manufacturer.