Eaton MTL

MTL Instruments Group


MTL830C Temperature Multiplexer system

MTL830C multiplexer system with Modbus® outputs provide 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, 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.

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Please click the below links for technical support notes on:

Product Code Description Downloads

intrinsically safe logo Symbol denotes that the equipment is suitable for use in hazardous area applications.
fsm logo Symbol denotes that the product has been assessed for functional safety applications

MTL830C   Temperature Multiplexer system with Modbus RTU receiver Datasheet  Software
MTL830C-MBT   Temperature Multiplexer system with Modbus TCP receiver Datasheet 
MTL831C   Analog transmitter Manual  Firmware
MTL838C   Receiver, Modbus/RS485 output Manual  Firmware
MTL838C-MBT   Receiver, ModbusTCP/Ethernet output Manual  Firmware
INM MTL838C-MBF   Modbus Implementation Instruction Manual Manual 
INM MTL83xC LLMUX   MTL83xC LLMUX emulation manual Manual 
INM MTL83xC Modbus   MTL83xC Modbus PC software manual Manual 
FCS-9616/9632   Process JBs datasheet Datasheet 
Customer Drawings
FCS-1000   Gland Details File
FCS-9616   Process JB for 1 x MTL831C polished stainless steel File
FCS-9632   Process JB for 2 x MTL831C polished stainless steel File