Product Description
MTL MTL831B Analog Multiplex Transmitter
- Manufacturer: Measurement Technology Ltd (MTL), part of Eaton's Crouse-Hinds series
- Model/Part Number: MTL831B
- Description: Analog Multiplex Transmitter for Thermocouple/RTD Input
Overview
- The MTL831B is a multiplexer transmitter designed for hazardous-area temperature measurement in safety instrumented systems (SIS). It communicates the status of multiple thermocouple (THC) or resistance temperature detector (RTD) inputs over dual-redundant data highways, reducing the need for extensive hazardous-area cabling. The MTL830B range, including the MTL831B, has been discontinued but is still supplied for spares and repairs within the EU as it is not RoHS compliant.
Technical Specifications
| Specification | Details |
|---|---|
| Model | MTL831B |
| Series | MTL830B Multiplexer Range |
| Type | Analog Multiplex Transmitter |
| Input Types | Thermocouple (THC), Resistance Temperature Detector (RTD) |
| Number of Inputs | Up to 32 inputs (with two transmitters and one receiver) |
| Communication | Modbus outputs over dual-redundant data highways |
| Operating Temperature | -20°C to +60°C |
| Certifications | Intrinsically safe for hazardous areas |
Additional Information
- Functionality: The MTL831B reduces wiring costs by up to 50% by multiplexing multiple sensor inputs over a single pair of cables, eliminating the need for individual loop isolation. It is designed for intrinsically safe applications, communicating sensor data efficiently to control systems. The system supports migration to newer MTL831C and MTL838C models for enhanced functionality.