Eaton Crouse-Hinds MTL4575 Temperature Converter
01Product Overview
Eaton Crouse-Hinds series MTL4575 is a one-channel MTL4500 temperature converter for intrinsically safe measurement circuits. It converts low-level signals from hazardous-area thermocouples, two-, three-, or four-wire RTDs, and millivolt sources into a safe-area 4...20 mA output, with a configurable alarm for process or sensor-failure indication.
Match the exact catalog number, backplane, sensor type, signal range, configuration, and hazardous-area requirements.
02Specifications
| Manufacturer | Eaton |
|---|---|
| Catalog Number | MTL4575 |
| Product Type | Temperature converter |
| Series | Crouse-Hinds MTL4500 |
| Number of Channels | 1 |
| Supported Inputs | Thermocouple types, 2/3/4-wire RTDs, and mV |
| Millivolt Signal Range | -75 mV to +75 mV |
| Output | 4...20 mA nominal into 600 ohm maximum |
| Power Supply | 20...35 V DC |
| Current Consumption | 50 mA |
| Power Dissipation | 1.2 W |
| Response Time | Configurable; 500 ms default |
| Cold Junction Compensation | Automatic or selectable |
| Cold Junction Compensation Error | ≤ 1.0 °C |
| Configuration | MTL PCS45 software with PCL45USB interface |
| Mounting | MTL4500 range backplane |
| Operating Temperature | -20...+60 °C |
| Storage Temperature | -40...+80 °C |
| Relative Humidity | 5...95% |
| Hazardous-Area Rating | IECEx / ATEX, Zone 0 |
| EMC Standard | EN 61326 |
| EAN | 3066227675889 |
03Features
Design and Function
- Converts hazardous-area temperature-sensor signals to a safe-area 4...20 mA current output.
- Supports thermocouples, millivolt inputs, and two-, three-, or four-wire RTDs.
- Software-selectable linearisation, ranging, monitoring, testing, and tagging.
- Automatic or selectable cold-junction compensation for thermocouple applications.
- Configurable sensor-failure drive can be set upscale, downscale, or off.
- Early thermocouple burnout detection can alarm when loop resistance increases by more than 50 ohm.
- Green power and yellow status LED indications support local diagnostics.
- A single alarm output can be configured for process alarm or early thermocouple-failure indication.
Product Identity
Model: MTL4575
Type: MTL4500 Temperature Converter
Manufacturer: Eaton
04Applications
- Temperature measurement from sensors installed in hazardous or classified areas.
- Conversion of thermocouple or RTD measurements into a standard 4...20 mA control-system signal.
- Process-temperature monitoring requiring local alarm or sensor-failure indication.
- MTL4500 backplane installations where channel configuration is managed with PCS45 software.
05Lifecycle & Replacement
- Use the exact MTL4575 catalog number when replacing a module in an MTL4500 backplane.
- Back up or record the PCS45 configuration, sensor type, range, linearisation, alarm setting, response time, and failure-drive mode before removal.
- Confirm the HAZ-CJC plug arrangement for thermocouple applications and reproduce the terminal wiring exactly.
- MTL5575 is a related MTL5500-family temperature converter, but mounting and system compatibility must be checked before any migration.
- After installation, verify sensor simulation, 4...20 mA scaling, alarm operation, and hazardous-area installation requirements.
FAQFrequently Asked Questions
What signals can MTL4575 accept?
It supports thermocouple types, millivolt signals, and two-, three-, or four-wire RTDs.
What output does the module provide?
It provides a nominal 4...20 mA output into a load of up to 600 ohm.
How is MTL4575 configured?
Configuration uses a computer running MTL PCS45 software with a PCL45USB serial interface.
Does MTL4575 provide an alarm?
Yes. One alarm output can be configured for a process alarm or early thermocouple-failure indication.
What supply voltage is required?
The official specification lists a 20...35 V DC power supply.
Can MTL5575 be treated as a direct plug-in replacement?
Not without checking. It is a related temperature converter in the MTL5500 family, while MTL4575 mounts on an MTL4500 backplane.
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