MTL Instruments MTL5582B Signal Isolator

MTL5582B Resistance Isolator for RTD Signal Repeating

The MTL5582B from MTL Instruments is a robust resistance isolator. It safely repeats RTD signals from Division 1 hazardous areas to safe areas. This single-channel device supports various RTD wiring configurations for flexible integration.

Key Technical Specifications

• Brand: MTL Instruments
• Model: MTL5582B
• Product Type: Resistance Isolator
• Number of Channels: 1
• Resistance Input Range: 10Ω to 400Ω
• Resistance Output Range: 10Ω to 400Ω
• Compatible RTDs: 2-, 3-, or 4-wire types per BS 1904/DIN 43760
• RTD Excitation Current: 200µA nominal
• Output Configuration: 2, 3, or 4 wires, independent of input
• Temperature Drift: ±10mΩ/°C typical
• Response Time: Reaches within 4% of final value in under 1 second
• Open-Circuit Fail-Safe: Output drives upscale to 420Ω nominal

Hazardous Area Certification & Safety

• The unit is approved for use in Zone 0, IIC, T4 hazardous areas.
• It also suits Division 1, Group A hazardous locations.
• This certification ensures safe operation in high-risk environments.

Installation and Setup Guide

• You can select the RTD wiring mode (2, 3, or 4-wire) using internal switches.
• The factory default setting is typically for a 3-wire RTD configuration.
• The output terminals operate independently from the hazardous area input.
• A green LED provides clear and immediate power status indication.

Power Requirements & Performance

• The device requires a supply voltage between 20V and 35V.
• Power consumption is approximately 33mA at 24V.
• Maximum internal power dissipation is 0.8W at 24V.
• Its low drift and fast response ensure highly reliable and accurate signal replication.

Frequently Asked Questions (FAQ)

• What RTD types does the MTL5582B support?
  It works with standard 2-, 3-, or 4-wire RTDs, which you can select via switches.
• What happens if my RTD sensor fails open?
  The isolator provides a fail-safe function, driving the output to a nominal 420Ω.
• Is this isolator suitable for my hazardous location?
  Yes, it is designed for demanding Zone 0/Division 1, Group A, IIC, T4 areas.