MTL831B Hazardous Area Analog Transmitter - MTL

MTL831B Multiplexer Transmitter for Analog Inputs

The MTL831B from MTL Instruments is a versatile multiplexer transmitter. It processes inputs from multiple sensors in hazardous areas. This device sends serial data to controllers using Modbus communications for efficient system integration.

Key Technical Specifications

• Brand: MTL Instruments
• Model: MTL831B
• Product Type: Multiplexer Transmitter
• Input Channels: 16 for THC/mV or 15 for RTD
• Input Types: Thermocouples, mV sources (±60mV max), RTDs
• Weight:0.5 kg
• Communication Protocol: Modbus
• Data Highways: Dual redundant configuration
• Hazardous Area Rating: Zone 0, IIC, T4
• Response Time: 1 second per transmitter

Input Configuration & Flexibility

• The transmitter monitors up to 16 thermocouple or millivolt sources
• It can handle up to 15 RTDs with 2-, 3-, or 4-wire configurations
• You can mix thermocouples and RTDs on the same transmitter unit
• All input sources can be located in Zone 0 hazardous areas
• The device accepts potentiometer inputs up to 1kΩ resistance

Environmental Specifications

• Operating Temperature: -20°C to +60°C
• Storage Temperature: -40°C to +80°C
• The transmitter itself is rated for installation in Zone 0 locations
• It maintains intrinsic safety standards in hazardous environments

Electrical Safety Parameters

• Input Circuit Safety: Umax:out = 15V, Imax:out = 16.3mA
• Maximum Output Power: Wmax:out = 60mW
• Data Highway Input: Umax:in = 30V, Imax:in = 300mA
• Input Cable Parameters: Certified for IIC, IIB, and IIA areas

Frequently Asked Questions

• Can I mix different sensor types on one MTL831B?
  Yes, you can combine thermocouples and RTDs on the same transmitter.
• Does this require separate power in hazardous areas?
  No, it is loop-powered through the data highway from the receiver.
• What communication protocol does it use?
  The transmitter communicates using standard Modbus protocol.
• How many sensors can one transmitter handle?
  It supports 16 THC/mV inputs or 15 RTD inputs simultaneously.