MTL5081 The MTL5081 is a millivolt isolator designed to take a low-level DC signal from a hazardous area and pass it to a safe area instrument. It offers a 0 to ±50mV input/output range and 250V ac isolation.
Mfr Part #:

MTL5081

Available from 1 distributors
Mfr Name: Eaton MTL Instruments
Eaton MTL Instruments
The MTL5081 is a millivolt isolator designed to take a low-level DC signal from a hazardous area and pass it to a safe area instrument. It offers a 0 to ±50mV input/output range and 250V ac isolation.
✓ Total Stock: 18 pcs
$ Price Range: $1.20

MTL5081 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
18 pcs
18 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

MTL5081 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Frequency Response
Isolation
Number of Channels
Response Time

MTL5081 Description

Short technical summary and product information.

The MTL5081 is a single-channel millivolt isolator from MTL, designed for use in hazardous environments. It accepts any DC millivolt source located in Zone 0, IIC, T4–T6 hazardous areas or Div 1, Group A hazardous locations, and isolates the signal for transmission to a receiving instrument in a safe area.

 

Key electrical specifications include an input and output signal range of 0 to ±50mV with an overrange capability to ±55mV. The module features a nominal output resistance of 60 Ω and a transfer accuracy of linearity and repeatability less than 0.05% of reading or ±5µV, whichever is greater. Temperature drift is specified at ±(2µV + 0.002% of input) per °C, and the response time settles within 10% of the final value typically within 150µs. The frequency response extends from DC to 4kHz.

 

For safety and flexibility, the MTL5081 includes switches to enable or disable the safety drive in the event of thermocouple burnout or cable breakage, and to select upscale or downscale drive. It requires a power supply of 20 to 35V dc with a maximum current draw of 20mA. The unit provides 250V ac isolation between safe circuits, hazardous circuits, and power supply circuits. Terminals 1 and 2 are rated as non-energy-storing apparatus, allowing connection into IS loops with an open circuit voltage less than 28V without further certification.

 

This module is intended for use with thermocouples utilizing external cold junction compensation. A green LED indicator is provided for power indication. The maximum power dissipation is 0.5W at 24V and 0.7W at 35V.

MTL5081 Quick Information

Product Type: Millivolt Isolator
Canonical Name: MTL5081 Millivolt Isolator
Subcategory: Millivolt Isolator

MTL5081 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MTL5081 Estimated Pricing

Qty Low High
1+ $1.20 $1.20

Estimated market price range - modelled values for guidance only, not live distributor offers.

MTL5081 Features

  • Single channel millivolt signal isolation.
  • 0 to ±50mV input and output range.
  • 250V ac isolation between circuits.
  • Suitable for Zone 0 hazardous areas.
  • Fast response time of typically 150µs.

MTL5081 Applications

  • Isolating signals from hazardous areas.
  • Use with thermocouples and cold junction compensation.
  • Connecting field instruments to control systems.
  • Signal conditioning in industrial automation.

MTL5081 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input and output signal range of the MTL5081?

0 to ±50mV, with overrange up to ±55mV.

What is the isolation voltage of the MTL5081?

250V AC between safe circuits, hazardous circuits, and power supply circuits.

What is the response time of the MTL5081?

Typically 150µs to settle to within 10% of final value.

What is the operating voltage range for the MTL5081?

20 to 35V DC, maximum current 20mA.

What is the transfer accuracy of the MTL5081?

<0.05% of reading or ±5µV, whichever is greater, for linearity and repeatability.

What is the temperature drift specification?

±(2µV + 0.002% of input) per °C.

Can the MTL5081 be used in hazardous areas?

Yes, if suitably certified. The millivolt source can be located in Zone 0, IIC, T4–T6 hazardous areas or Div 1, Group A hazardous locations. The input terminals are non-energy-storing and can connect to any IS loop with open circuit voltage <28V.

MTL5081 Alternate Parts

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The Measurement Technology MTL5081 is a millivolt isolator designed for hazardous area applications. It provides isolation for low-level DC signals.
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