Description
MTL4575: Smart Temperature Transmitter Interface
The MTL4575 converts temperature signals from hazardous areas into safe 4/20mA outputs. It works with thermocouples and RTDs. Software allows easy configuration for different sensor types. Includes alarm output for process monitoring.
Technical Specifications
Brand: MTL
Model: 4575
Sensor Types: J,K,T,E,R,S,B,N thermocouples; Pt,Cu,Ni RTDs
Input Range: -75 to +75mV or 0-400Ω (0-1000Ω for Pt/Ni)
Output Signal: 4-20mA into 600Ω max
Excitation Current: 200μA for RTDs
Accuracy: ±15μV or ±0.05% for mV/THC; ±80mΩ for RTD
Temperature Drift: ±0.003%/°C for mV/THC; ±7mΩ/°C for RTD
CJC Error: ≤1.0°C
Response Time: Configurable, 500ms default
Alarm Output: Relay, 250mA at 35V max
Lead Resistance: 600Ω max for thermocouples
Power Consumption: 50mA at 24V
Power Dissipation: 1.2W at 24V
Hazardous Rating: Zone 0, IIC, T4-T6 / Div 1, Group A
Isolation: Um=253V
LED Indicators: Green (power), Yellow (alarm)
Configuration: PC with MTL PCS45 software
Operating Temperature: -20°C to +60°C
Mounting: DIN rail
Frequently Asked Questions
What sensors does it work with?
It supports all major thermocouple types and 2/3/4-wire RTDs including Pt100, Cu50, and Ni100.
How is it configured?
Using a PC with MTL PCS45 software and PCL45USB interface for easy setup.
What is early burnout detection?
It detects when thermocouple resistance increases by more than 50Ω, indicating potential failure.
Can it handle both mV and RTD inputs?
Yes, it accepts both millivolt signals from thermocouples and resistance inputs from RTDs.
What output signals does it provide?
It provides a standard 4-20mA output and a configurable alarm relay output.
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