MTL MTL5082 2/3/4-Wire RTD Isolator Module

Product Introduction

The MTL5082 from MTL operates as a robust interface for resistance temperature devices. This module connects RTDs located in hazardous areas to monitoring systems in safe areas. 

Key Features and Benefits

• The MTL5082 supports 2-, 3-, or 4-wire RTD connections
• You can easily select the wiring configuration using top-mounted switches
• It provides complete isolation between hazardous and safe areas
• This module delivers a repeated resistance output from 10Ω to 400Ω
• It features an open-circuit safety drive that upscales to 420Ω
• The unit has a compact and lightweight design of only 110g

Technical Specifications

• Brand: MTL
• Model: MTL5082
• Weight: 110g
• Input Resistance Range: 10Ω to 400Ω
• Output Resistance Range: 10Ω to 400Ω
• RTD Excitation Current: 200μA nominal
• Temperature Drift: ±10mΩ/°C typical
• Response Time: Within 1s to 4% of final value
• Hazardous Area Certification: Zone 0, IIC, T4
• Supply Voltage Range: 20V to 35V DC
• Isolation: 250V AC between all circuits

Installation and Wiring Guide

• Use terminals 1 and 3 for basic RTD input connections
• Terminal 4 provides the return for a 3-wire RTD configuration
• Terminal 5 is for the sense line of a 4-wire RTD
• Connect the safe-area output to terminals 9 and 10 or 11 and 12
• Apply power using terminals 13 (-ve) and 14 (+ve)
• Ensure the wiring matches your selected switch configuration

Frequently Asked Questions

• What RTD types does this module work with?
  The MTL5082 typically works with Pt100 sensors.
• Can I use it with a 2-wire RTD?
  Yes, you can select 2-wire mode using the top switches.
• What happens if my sensor wire breaks?
  The module drives the output upscale to 420Ω.
• Is the output wiring independent of the input?
  Yes, the safe-side output uses 2, 3, or 4 wires freely.