The MTL5082 is a resistive isolator that has been discontinued and replaced by the MTL5582B. Here is its specific introduction:

It is used to connect 2-wire, 3-wire, or 4-wire resistance temperature devices (RTDs) or other resistors located in hazardous areas, isolate their resistance signals, and repeatedly transmit them to a monitoring system in a safe area. It is typically used for Pt100 three-wire RTDs.

Supports 2-wire, 3-wire, or 4-wire RTD input, compliant with the BS 1904/DIN 43760 standard (100 Ω at 0 °C). Users can select via the switch on the top of the module, with the factory default setting being 3-wire.

The output configuration is 2-wire, 3-wire, or 4-wire, with an output range of 10 Ω to 400 Ω (from 100 µA to 5mA source).

The typical temperature drift value is ±10mΩ/°C (0.01%/°C @ 100 Ω), and the response time reaches within 4% of the final value within 1 second. In the case of an open-circuit sensor, it will drive upwards to the nominal 420 Ω.

The operating voltage is 20-35V DC, with a current consumption of 55mA at 24V, 65mA at 20V, and 45mA at 35V.

The isolation voltage between the safe zone and hazardous zone circuits and the power supply is 250V AC.

It is applicable to Zone 0, IIC, T4 hazardous areas, and Div 1, Group A hazardous locations.

Equipped with a green LED indicator light for power and status indication, and weighs approximately 110g.