POT Type RTD Temperature Transmitter (Head Type)

A. Product Overview

This Head-Mount PT100 Temperature Transmitter with Display is designed for installation in a Type 2088 housing and provides both local temperature indication and a standard 4–20 mA output for industrial monitoring and control. It is intended for RTD PT100 temperature measurement points where technicians need an on-site reading while still transmitting a reliable current loop signal to a receiving system such as a PLC, DCS, SCADA, BMS, panel meter, or data logger.

The transmitter is described as high precision and high stability and includes an electrically isolated design to improve measurement robustness in field wiring. The electronics include a 24-bit sigma-delta (Σ-Δ) analog front end and protection functions described as anti-surge, anti-lightning, and anti-reverse, supporting installations where electrical disturbances may affect instrumentation.

B. Working Principle

A PT100 RTD changes resistance with temperature. The transmitter measures the PT100 resistance using a defined excitation current and converts the measured temperature into a proportional 4–20 mA output across the configured range. The 4–20 mA signal is transmitted through a standard current loop to remote instrumentation and control systems.

At the same time, the integrated display provides local indication at the measurement point, allowing quick verification during commissioning, calibration checks, and maintenance without requiring the control system display.

C. Key Applications

• HVAC temperature measurement and control loops

• Building automation and BMS systems

• Pharmaceutical labs and pharmaceutical production areas

• Clean rooms and controlled environments

• Climate control and utilities monitoring in office and industrial buildings

D. Why Industries Use This Product

Industries select a head-mount transmitter with display when they need:

1. Local visibility for field verification and troubleshooting

2. A standard 4–20 mA signal for integration with control and monitoring systems

Electrical isolation is specified to improve reliability in installations where grounding differences and electrical noise can affect measurement signals. Protection functions described as anti-surge, anti-lightning and anti-reverse are useful in environments where wiring faults or electrical disturbances may occur. With a specified load capability of 500 Ω or less, the transmitter supports common 4–20 mA loop requirements in automation and building services.

E. Suitable Buyers

• OEMs integrating PT100 temperature measurement points with local indication in Type 2088 head assemblies

• EPC contractors standardizing PT100 temperature loops with 4–20 mA output and head-mount installation

• Maintenance and utilities teams commonly using it for replacement where PT100 and 4–20 mA are required

• Plant engineering and procurement teams preferring Type 2088 housing format for standardized installations

FAQ SECTION 

1. What sensor does this head-mount transmitter support?
It is specified for RTD PT100 input.

2. What output signal does it provide?
It provides a 4–20 mA output signal.

3. What power supply is required?
Working power supply is 12–35 VDC.

4. What accuracy is listed for RTD measurement?
RTD measurement accuracy is specified as 0.3%.

5. What is the excitation current for the RTD input?
Excitation current is specified as 0.2 mA.

6. What load can the 4–20 mA output drive?
The specified loop load is 500 Ω or less.

7. What are the operating and storage temperature limits?
Operating temperature is 0 to 60°C and storage temperature is 0 to 80°C.

8. What is the maximum power consumption?
Maximum power consumption is specified as 25.0 mA.

9. What housing and mounting details are listed?
Housing material is PA66 and mounting screws are specified as M4 × 2.

10. What design and protection features are mentioned?
The product includes electrical isolation, a 24-bit Σ-Δ analog front end, and protection described as anti-surge, anti-lightning and anti-reverse.