4-20mA Thermistor Transmitters The Robert Owen Inc. ROI-XMA 4-20mA sensor transmitter allows PLC Thermistor Measurement. With ROI-XMA; you can use 10K NTC thermistors with standard industrial PLC’s and industrial I/O. The ROI-XMA series of loop powered thermistor transmitters. They convert a thermistors temperature related resistance change. Into a standard 4-20mA instrumentation signal. The ROI-10KXMA series […]
thermistor temperature transmitter
|A thermistor temperature transmitter allows industry standard RTD temperature sensors to be directly connected to PLC 4.20mA inputs and industrial IO modules. The 4.20mA transmitter connection is a standard format in industrial measurement and control systems. The 4.20mA signal allows the RTD temperature sensor measurement to be run much further than the direct connection of the RTD temperature sensor itself. 4.20mA signals can be run directly for thousands of feet, when using the correct cable and power supply. Many PLC inputs either standardly or optionally can be configured for 4.20mA, and it is not unusual to find spare inputs in an installation.
Example 4-20mA thermistor transmitter wiring diagram A Simple 4-20mA Transmitter Operation Description The 4-20mA transmitter can be looked at as a temperature controlled variable load. It is in series with the power supply and current measurement shunt resistance. The effect is similar to the transmitter acting like a potentiometer. One that will vary total load
10K NTC THERMISTOR TRANSMITTERS READ TEMPERATURE SENSORS WITH YOUR PLC Do you have a PLC and need to read temperature? Did you know, you can use spare PLC 4-20mA inputs for temperature sensor measurement? You can add temperature measurement to a PLC with ROI-XMA sensor transmitters. ROI-XMA thermistor transmitters allow the simple measurement of industry