LED/LCD display digital PT100 RTD Temperature transmitter with 24vdc
Working Principle
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
Product Features
1. Small in size, can be used in restricted installations, with thin pipes and compact equipment
2. Comes with a display, quick to debug, easy for inspection
3. High cost-performance, lightweight, simple wiring
4. Anti-interference, stable, compatible with PLC/DCS
5. High temperature resistance, waterproof, suitable for HVAC and automation equipment
application scenarios
1. Food and Beverage Industry: Local temperature monitoring of sterilizers and fermentation tanks (requires hygienic design).
2. Pharmaceutical Industry: Temperature monitoring of purified water systems and sterilizers.
3. Machinery Manufacturing: Temperature monitoring of injection molding machine barrels, hydraulic oil, and bearings.
4. HVAC and Energy: Monitoring boiler outlet temperature and heat exchanger temperature difference.
5. Laboratory Equipment: Temperature display and control for small ovens and incubators.
Product detail

Technical Specifications
|
Product Name |
PT100 Temperature transmitter |
|
Input signal |
PT100 |
|
Measuring range |
-50~200℃(Normal temperature) -50~400℃(High temperature) |
|
Output signal |
4-20mA/0-5V/0-10V/1-5V/RS485 |
|
Power supply |
12~24VDC |
|
Probe size |
6*30mm 50mm 100mm 150mm 200mm 250mm 300mm (Special sizes can be customized) |
|
Installation method |
M20*1.5 , G1/4 , G1/2 , 1/4NPT , 1/2NPT |
|
Note: |
≤200℃:Normal temperature 200℃~400℃: High temperature |













