4-20mA NTC transmitter signal conditioning allows industry standard NTC Thermistors to be directly connected to PLC 4-20mA inputs and industrial IO modules. The NTC transmitter 4-20mA Thermistor connection is a standard format in industrial measurement and control systems. The 4-20mA signal allows the NTC measurement to be run much further than the resistive connection of the thermistor 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
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 …
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 …
Example 4-20mA thermistor transmitter wiring diagram Read More »
Remote monitoring critical sensors with a simple to use wireless sensor measurement module, the ROI-RFX Remote monitoring critical sensors is simpler using wireless sensor measurement. A typical problem with sensor measurement wiring, how to get the signal connection from there to here. One example is, the temperature of the greenhouse on the other side of …
WIRELESS TEMPERATURE SENSOR MONITORING Remotely monitor temperature over distances up to 1 mile using industry standard 10K ohm NTC thermistors The ROI-RFX-RT is a simple to use Windows compatible 2.4 GHz RF wireless remote temperature transmitter system. Using the ROI-RFX-RT allows you to; remotely monitor & record temperature over distances of up to 1 mile/1.6 …