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Intrinsic safety

MTL830C Temperature Multiplexer system

The Crouse-Hinds series MTL830C multiplexer system with Modbus® outputs provides a cost-effective alternative to single-loop isolation. The cost of installed wiring is reduced by up to 50% by communicating the input of multiple hazardous-area sensors over a single twisted pair data highway. Further savings are achieved by reducing the number of inputs to the host, which improves cabinet space and weight. A multiplexer transmitter, mounted in the hazardous area, caters for thermocouple, RTD and mV analogue inputs.

Two compatible safe-area receivers provide easy integration of Modbus® outputs into PLC, PC or DCS controllers. The MTL838C Modbus RTU receiver supports redundant serial interfaces and the new MTL838C-MBT Modbus TCP receiver supports Ethernet connectivity.

FCS-9616/9632 MTL Process Junction Boxes provide ideal enclosures for mounting MTL831C temperature multiplexer transmitters in harsh and hazardous environments. They offer plenty of space for termination and wiring, making it easy to install and maintain the fieldbus system.

Safety
Highlight problems quickly
Reliability
Withstands extreme temps (-40 to +70C)
Ease of Use
Reduce the cost of installing

Certifications and compliances

ATEX & IECEx approved

  • Zone 0 mounting
  • Group IIC
  • T4 temperature classification
  • Certified for -40°C to +70°C

CE marked for compliance with EMC, ATEX and RoHS Directives

Other approvals

  • India (PESO)
  • Russia (EAC)

Design Features

  • Reduce the cost of installing hazardous area cabling
  • Save installation time, space and weight
  • Highlight problems quickly with status reporting systems
  • Protect the process with sensor failure detection and safety drives
  • Connect directly to host systems through serial-data outputs
  • Analog inputs to controllers with Modbus® communications
Specifications

Ordering information

Product Code Specification Certification
MTL831C Analog transmitter with fixed screw terminal inputs ATEX, IECEx and FM
MTL831C-PS Analog transmitter with pluggable screw terminal input ATEX, IECEx and FM
MTL838C Receiver, Modbus/RS485 output ATEX, IECEx and FM
MTL838C-MBT Receiver, ModbusTCP/Ethernet output ATEX, IECEx and FM
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