4-20mA output PT100 thermal resistor temperature transmitter with 24vdc

The resistance of a PT100 thermal resistor changes with temperature: as the temperature rises, the resistance increases, and vice versa. The measurement circuit inside the transmitter, such as a Wheatstone bridge or constant current circuit, measures the resistance value of the PT100. Since the resistance-temperature relationship of a PT100 is not perfectly linear, the microprocessor or dedicated chip built into the transmitter linearizes the signal according to standard calibration tables. At the same time, it compensates for drift caused by the influence of ambient temperature on its electronic components, amplifies and conditions the small resistance change signal, and finally outputs a 4-20 mA current signal, a 0-5V/0-10V voltage signal, or digital signals 

1.High Precision: PT100 itself has high accuracy, reaching Class A (±0.15℃) or Class B (±0.30℃). After being processed by the transmitter, it can provide accurate temperature data for industrial measurements.
2.Wide Temperature Range: It can meet the temperature measurement requirements for various industrial scenarios and special environments.
3.Strong Anti-Interference Capability: Its 4-20mA current output signal has strong anti-interference ability, allowing long-distance transmission and enabling the detection of circuit disconnection through an "active zero" point.
4.Multiple Output Options: Supports both analog and digital signal outputs, meeting the interface requirements of different control systems and facilitating connection with systems such as PLC and DCS.

1. Outdoor pipelines, open storage tanks, cooling towers, sewage treatment plants;

2. Areas with explosion-proof requirements such as chemical, petroleum, and natural gas industries;

3. Working conditions with large amounts of dust and strong vibrations, such as metallurgy, electric power, and cement industries;

4. Moist and enclosed environments such as underground pump rooms and tunnels.