You should consider ROI 4 20mA Sensor Transmitters. Because they let you use sensor with spare PLC 4-20mA inputs for environmental monitoring.
4 20mA Sensor Transmitters
The ROI series is a versatile family of loop powered 4-20mA sensor transmitters, because the signal range is scalable to alternate spans within it’s sensor range. Wide 4-20mA loop supply range.
When you have spare PLC 4-20mA inputs, and need to add sensor measurement, use a ROI 4-20mA sensor transmitter. Because the ROI 4-20mA sensor transmitters allow the simple measurement of industry standard sensors. They use the standard 4-20mA signal. So you can easily connect your existing sensors to modern control systems. They are a simpler way to add sensor measurement to a PLC than other types. They are useful in HVAC systems, refrigeration systems, chillers, environmental monitoring, computer room monitoring, dryer, and other sensor measurement applications.
When you need a 4-20mA sensor transmitter, use the ROI series. In other words a 4-20mA transmitter are a simple way to add sensor measurement to a PLC.
EURO ELECTRICAL CONNECTORS
MOUNTING BASE FOR DIN RAIL MOUNTING
WIDE 4-20mA LOOP SUPPLY RANGE
USED IN REMOTE MONITORING
MEASURE INDUSTRY STANDARD SENSORS
READ TRANSMITTER WITH PLC, RTU, PC A-D SYSTEMS
USE WITH 20mA, 5V, 10V MEASUREMENT SYSTEMS *
MOUNTING: 35mm DIN rail or surface mountable snap on base
SIGNAL OUTPUT: 4-20mA ( LOOP POWERED )**
CONNECTIONS: 30-12awg wire
INPUT RANGE: part number dependent (factory set).
INPUT TYPE: Thermocouple, Thermistor
* Voltage ADCs require a loop termination resistor
** 4-20mA signal uses a 2-wire connection. Resistance transmitter. Connect output in series, with supply and measurement device.