Simple PLC Thermistor measurement

4-20mA Thermistor Transmitters

4-20mA PLC Thermistor temperature measurement

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 are simple to use. Loop powered 4-20mA 10K NTC thermistor temperature transmitters. Available in a number of ranges . For example 0 to 50 Dec C input to 4-20mA output. Signal range can be custom scaled. Scaled to alternate thermistor temperature spans. Also scaled for part of the normal sensor range. Transmitter supply voltage may be from 7.5 to 36Vdc. Output circuit is reverse connection protected and filtered. Use spare PLC 4-20mA inputs for temperature measurement. Do this with the ROI-10KXMA thermistor transmitter. As the ROI-10KXMA thermistor transmitter allows the simple measurement of industry standard thermistors. So existing 10K ohm NTC thermistors can be connected to modern control systems.

You will find the thermistor is a simple way to add temperature measurement to a PLC. The thermistor is ideally suited for limited temperature ranges can be used to achieve higher precision than other temperature sensors. Useful in HVAC systems, refrigeration systems, chillers, environmental monitoring, computer room monitoring, dryer, and many other limited temperature range applications.

PLC Thermistor Measurement

So, you can input thermistor temperature sensor data, into your PLC. You do this for example by using standard 4-20mA, 0-20mA, 0-5Vdc, or 0-10Vdc input A-D channels. So, there is no need to replace working sensors. Because you can signal condition your sensors. Therefore, you can make them compatible with most modern industrial control systems.

The ROI-XMA Features:

  • Pluggable sensor Euro connectors
  • Snap on mounting base for DIN rail or surface mounting.
  • Loop powered sensor transmitter, signal conditioner format

They are so useful for interfacing existing systems. Such as HVAC and refrigeration systems with built in thermistor temperature sensors. For example, makes them compatible with modern industrial control systems.

Why not learn more about our temperature sensor transmitter solutions?

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