The MTL5573 belongs to the MTL5500 series and handles temperature inputs from RTDs or thermocouples. This device converts those signals into a standard 4-20mA current loop. It suits hazardous locations rated Zone 0 and includes both green power and yellow status LEDs. Furthermore, the unit offers selectable cold junction compensation and early burnout detection. Its slim 15.8mm width saves valuable rail space in control cabinets.
This converter requires a 20-35Vdc power supply and draws only 50mA. Power dissipation is low at 1.2W. The output signal ranges from 4-20mA into a maximum load of 600Ω (with safety drive enabled). Without safety drive, the load can exceed 10kΩ. Transfer accuracy reaches ±11µA, while temperature drift stays at ±1.0µA/°C.
The MTL5573 accepts RTD inputs in 2, 3, or 4-wire configurations. It also handles thermocouple types (THC) and millivolt signals. RTD excitation current is 200µA. Cold junction compensation can be switched ON or OFF, with an error of ≤1.0°C when enabled.
Response time is fixed at 500ms by default. Common mode rejection hits 120dB for 240V at 50 or 60Hz. Series mode rejection reaches 40dB at the same frequencies. Consequently, the MTL5573 rejects electrical noise effectively and provides stable readings in industrial environments.
Galvanic isolation measures 250V rms between safe-area circuits and the power supply. This isolation protects downstream equipment from voltage spikes. On sensor failure, you can configure the output to go upscale, downscale, or turn off completely.
Early burnout detection (EBD) triggers an alarm when loop resistance increases by more than 50Ω. This feature works for thermocouples when selected. Therefore, the MTL5573 helps you identify broken sensors before they cause process issues.
Operating temperature ranges from -20°C to 60°C. Storage temperature spans -40°C to 80°C. Humidity tolerance is 5-95% relative humidity, non-condensing. The enclosure measures 109.8mm (L) x 118.8mm (H) x 15.8mm (W). Weight is only 150g.
Terminals accept stranded or solid conductors up to 2.5mm². Use crimp ferrules for reliable connections. Mount the MTL5573 on a T-section 35mm DIN rail. The device meets EN61326 EMC standards and carries IECEx/ATEX certification for hazardous areas.
To configure the MTL5573, connect a personal computer running MTL PCS45 software. Use the PCL45USB serial interface adapter for communication. The software allows you to set input type, output range, sensor failure behavior, and cold junction compensation.
First, verify that the power supply delivers 20-35Vdc. Next, clip the unit onto a 35mm DIN rail. Then, connect your RTD or thermocouple sensor using appropriate wiring. For RTDs, choose 2, 3, or 4-wire connections based on your accuracy needs. After that, wire the 4-20mA output to your load (max 600Ω with safety drive enabled). Finally, apply power and check that the green LED illuminates. Use the PCS45 software to complete configuration before commissioning.
MTL5573 temperature converter (1 unit)
Pre-installed terminal blocks
Product identification label
Printed quick start guide
Note: Cables, PC software, and mounting accessories are sold separately. No certificates or warranty documents are included in the package.
1. Can the MTL5573 accept both RTD and thermocouple inputs on the same unit?
Yes, but you must select the input type during configuration using the PCS45 software.
2. What is the difference between MTL5573 and MTL5575?
The MTL5575 includes an alarm output, while the MTL5573 focuses on basic temperature conversion without alarm functionality.
3. How do I enable early burnout detection?
You must select this option during configuration in the MTL PCS45 software. The alarm trips when loop resistance exceeds 50Ω.
4. What happens to the output if the power supply fails?
The output drops to 0mA. No signal is generated until power is restored and the device re-initializes.
5. Can I mount multiple MTL5573 units side by side?
Yes. Each unit is 15.8mm wide, and they can be mounted directly adjacent on a 35mm DIN rail without spacing requirements.
| Brand Name | MTL |
| Model No. | MTL5573 |
| Product Type | Temperature Converter |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
