Robert Owen Inc.
Sensor Signal Conditioning,
ROI-XMA LOOP POWERED 4-20mA THERMISTOR TRANSMITTER
READ THERMISTORs WITH YOUR PLC
(excluding tax & shipping)
THERMISTOR 4-20mA 2 wire loop powered transmitter
The ROI-XMA series is a versatile family of loop powered 4-20mA thermistor transmitters. They are simple to use and simple to install thermistor temperature sensor amplifiers. Pluggable connections and pluggable mounting. Unit is purchased scaled ready to use, thermistor temperature is converted to 4-20mA. Can be used with: data acquisition systems, PLC systems, SCADA systems, and more.
Versions can be provided for thermistor Base Resistance (Ro), between 1K and 100Kohm impedance (@ 25 Deg C). Signal range can be custom scaled to alternate thermistor temperature spans within sensor range.
MOUNTING: 35mm DIN rail or surface mountable snap on base
SUPPLY RANGE: 7.5 TO 36Vdc, reverse connection protected
SIGNAL OUTPUT: 4-20mA ( LOOP POWERED )**
CONNECTIONS: 30-12awg wire
INPUT RANGE: 0 to 50 Deg C/-10 to 50 Deg C/0 to 75 Deg C/-10 to 75 Deg C
INPUT TYPE: 10K OHM NTC 2 WIRE THERMISTOR
DIMENSIONS: 4.510 X 1.258 X 3.948 (height above rail) LWH***
* Loop termination resistor required when used with voltage ADC
** 4-20mA signal uses a 2 wire connection. Resistance transmitter output is connected in series, with supply and measurement device.
*** Mated connector adds additional 3/8” to height.
Use spare PLC 4-20mA inputs for temperature measurement, with the ROI-XMA thermistor transmitter. ROI-XMA thermistor transmitters allow the simple measurement of industry standard thermistors. Existing 10K ohm NTC thermistors can be connected to modern control systems. 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 other limited temperature range applications.
10K Ohm NTC Thermistor 4-20mA 2 wire loop powered temperature transmitter
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Robert Owen Inc.
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