Wall-Mount Temperature Transmitter with In-Built RTD Sensor

A. Product Overview
This Wall Mount Temperature Transmitter is used to convert a PT100 resistance thermometer (RTD) input into a standard 2-wire 4–20 mA analog output. It is intended for field installation in a wall-mount format where temperature must be transmitted as a current loop signal to a receiving device. The transmitter is specified for PT100 input only and is supplied with fixed (factory-set) configuration as required.

B. Working Principle
A PT100 RTD changes its resistance with temperature. The transmitter measures the PT100 resistance and converts it into a proportional 4–20 mA output signal. The loop output follows defined limits and alarm behavior: saturation current is specified at low side 3.9 mA and high side 20.5 mA, and alarm current for sensor damage or sensor turn-off is specified as 3.9 mA or 22 mA. The output circuit limit is specified as ≤ 22 mA, and the response time is specified as ≤ 1 second.

C. Key Applications (Bulleted)

• PT100 RTD temperature signal conversion to 4–20 mA for remote monitoring

• Industrial 2-wire 4–20 mA current loop temperature transmission

• Installations requiring a wall-mount transmitter with fixed (factory-set) configuration

D. Why Industries Use This Product
Industries use PT100-to-4–20 mA transmitters to standardize temperature measurement into a widely accepted analog signal used across industrial instrumentation. This supports compatibility with devices that accept 4–20 mA inputs and enables reliable signal transmission over the loop. The transmitter specifies accuracy of 0.1% FS and response time of ≤ 1 second, and it defines saturation and alarm current behavior to indicate sensor faults. Protection is specified as IP00 and IP66 (mounted).

E. Suitable Buyers

• OEMs using PT100 RTD sensing and requiring 2-wire 4–20 mA output in wall-mount format

• EPC contractors standardizing PT100 temperature points into 4–20 mA loops

• Maintenance and utilities teams commonly using it for replacement of existing PT100 transmitter points

• Plant engineering and procurement teams preferring fixed (factory-set) configuration for standardized installations and retrofit projects

FAQ SECTION

1.What sensor input does this wall mount transmitter support?
It supports PT100 RTD input only.

2.What output signal does the transmitter provide?
It provides a 2-wire 4–20 mA output.

3.Is the transmitter configurable in the field?
The configuration is specified as fixed (factory set) as required.

4.What is the power supply range?
The specified power supply range is 12 V to 40 V.

5.What are the response time and accuracy specifications?
Response time is specified as ≤ 1 second. Accuracy is specified as 0.1% FS.

6.What are the output limits and alarm behavior?
Circuit limit is specified as ≤ 22 mA. Saturation current is specified as low side 3.9 mA and high side 20.5 mA. Alarm current for sensor damage or sensor turn-off is specified as 3.9 mA or 22 mA.

7.What protection rating is listed?
Protection is specified as IP00 and IP66 (mounted).