MTL MTL831B Analogue Multiplexer Transmitter

Description:

The MTL831B is a versatile analogue input transmitter designed to monitor inputs from various sources within hazardous areas. It supports up to 16 thermocouples (THC) or millivolt sources (max ±60mV) and up to 15 RTDs (2-, 3-, or 4-wire). The device is intrinsically safe and suitable for use in Zone 0 locations, featuring redundant data highways and being powered by the data highway itself.

Key Features:

• Intrinsically Safe: Designed for use in Zone 0 locations (IIC, T4).
• Redundant Data Highways: Dual redundant highways for reliable communication.
• Power Supply: Loop-powered through the data highway from the receiver; no hazardous-area power supply required.
• Mixed Inputs: Supports both thermocouples and RTDs on one transmitter.
• Multi-Transmitter Facility: Capable of supporting 1 or 2 transmitters.
• Ambient Temperature Limits:
  • Operating: -20°C to +60°C
  • Storage: -40°C to +80°C
• Typical Response Time: 1 second per transmitter (input to receiver output).

Specifications:

• Number of Input Channels:
  • 16 THC or millivolt sources, or
  • Up to 15 RTDs (2-, 3-, or 4-wire)
• Electrical Safety (Each Input Circuit):
  • Umax
    
    
    = 15V
  • Imax
    
    
    = 16.3mA
  • Wmax
    
    
    = 60mW
• Input Sensor Cable Parameters:
  • BASEEFA values for (C, L or L/R):
    • (IIC) 0.58µF, 127mH or 535µH/Ω
    • (IIB) 3.55µF, 486mH or 1087µH/Ω
    • (IIA) 14µF, 903mH or 1087µH/Ω
• Electrical Safety (Data Highway Circuit[s]):
  • Umax
    
    
    = 30V
  • Imax
    
    
    = 300mA
  • Wmax
    
    
    = 1.2W
  • Ceq = 0
  • Leq = 0
• Shipping Weight: 2 kg