RTD Converter, Pt100 to 4-20mA/RS485

An RTD converter is a device that converts the resistance signal from an RTD sensor (such as a Pt100) into a standard output like 4–20 mA or RS485, making it easier for controllers, PLCs, or monitoring systems to read and process temperature data. It provides accurate, stable, and noise-resistant signal transmission for reliable industrial temperature measurement.

An RTD converter is used to transform the resistance signal from an RTD sensor (such as a Pt100) into a standard output like 4–20 mA or RS485 for easy reading by controllers or monitoring systems. To use it, connect the RTD sensor leads to the converter’s input terminals, supply 12–36 VDC power, and wire the output to your control or display device. Configure the temperature range and communication parameters if required. Once connected, the converter continuously sends an accurate, stable temperature signal for reliable industrial monitoring.

To convert a Pt100 RTD signal to a 4–20 mA output, you need an RTD transmitter or converter. The Pt100 sensor’s resistance changes with temperature, and the converter translates that resistance into a proportional current signal. Connect the Pt100 leads to the converter’s input terminals, provide a 12–36 VDC power supply, and wire the 4–20 mA output to your control system or display. The converter then outputs 4 mA at the lower temperature limit and 20 mA at the upper limit, enabling accurate temperature measurement and easy integration into industrial control systems.