4-20mA RTD signal conditioning allows industry standard RTDs to be directly connected to PLC 4-20mA inputs and industrial IO modules. The 4-20mA RTD connection is a standard format in industrial measurement and control systems. The 4-20mA signal allows the RTD measurement to be run much further than the resistive connection of the RTD 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
Simple PLC RTD temperature measurement The Robert Owen Inc. ROI-XMA 4-20mA sensor transmitter allows 4-20mA PLC inputs to be used for RTD temperature measurement. Robert Owen Inc. temperature transmitters offer temperature ranges as wide as -200 to 500 Deg C or as small as 0 to 32 Deg C, depending on the make and model. […]
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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
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RTD 4-20mA temperature transmitters READ TEMPERATURE SENSORS WITH YOUR PLC Use spare PLC 4-20mA inputs for temperature sensor measurement, with ROI-XMA RTD transmitters. ROI-XMA RTD transmitters allow the simple measurement of industry standard series 100 ohm PT100 or 1000 (1K) ohm PT1000 RTD temperature sensors. Existing RTD temperature sensors can be connected to modern control
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4-20mA SENSOR TRANSMITTERS READ SENSORS WITH YOUR PLC Use spare PLC 4-20mA inputs for sensor measurement, with ROI-XMA transmitters. ROI-XMA sensor transmitters allow the simple measurement of industry standard sensors. Existing sensors can be connected to modern control systems. Read Thermistors, RTDs, or Potentiometers with a PLC. ROI-XMA 4-20mA sensor transmitters are a simple way to
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