The XMT288FC-III (or XMT-288FC-III) is an industrial digital display temperature controller meter primarily manufactured by brands like Hangzhou Huali Instrument. It is a specialized, supporting instrument explicitly designed for monitoring and controlling the oil or winding temperatures of power transformers.

Core Technical Specifications

According to documentation hosted on Alibaba and industrial supplier listings on Aeliya Marine Tech, the core technical makeup includes:

1. Input Signal Support: Standard Pt100 RTD sensor configuration, or a 2-wire 4–20mA telemetry link.
2. Standard Output Options: Simultaneously capable of delivering dual transmission signals (0–5V DC analog output alongside a 4–20mA DC standard current loop).
3. Measuring Temperature Ranges: Configurable options depending on deployment requirements, commonly spanning 0 to 100°C, 0 to 120°C, or 0 to 150°C.
4. Accuracy Rating: Classified at Class 1.0 level (±1% control accuracy).
5. Display Output: 0.8-inch, high-visibility 7-segment red digital tube displaying readouts down to a 0.1°C resolution.
6. Contact Output Capabilities: Features built-in upper and lower limit alarms, each driven by a designated set of normally open/closed contacts rated at 220V/3A (resistive loading).