The MTL5575 from the MTL5500 series converts temperature signals into a standard 4-20mA current loop. This device supports THC types, RTDs (2/3/4-wire), and ±75mV inputs. It is approved for hazardous locations including Zone 0, and it provides an alarm output for early burnout detection. Moreover, the unit includes a green power LED and a yellow status indicator. Its compact design fits on a standard 35mm DIN rail, making it easy to integrate into existing panels.
This converter operates with a 20-35Vdc power supply and consumes only 50mA. Power dissipation stays low at 1.2W. The output signal is 4-20mA into a maximum load of 600Ω. Transfer accuracy reaches ±11µA, and temperature drift is ±0.6µA/°C.
For input flexibility, the MTL5575 handles thermocouple types (J, K, T, etc.), millivolt signals from -75mV to +75mV, and 2/3/4-wire RTDs. The RTD excitation current is 200µA. Cold junction compensation is either automatic or selectable, with an error ≤1.0°C.
Response time is configurable, with a default setting of 500ms. Additionally, the device includes early burnout detection for thermocouples. An alarm trips when loop resistance increases by more than 50Ω.
Galvanic isolation stands at 250V rms between safe-area circuits and the power supply. Common mode rejection reaches 120dB for 240V at 50/60Hz, while series mode rejection is 40dB. Therefore, electrical noise has minimal impact on measurement accuracy.
The MTL5575 operates between -20°C and 60°C ambient. Storage ranges from -40°C to 80°C, with humidity tolerance of 5-95% (non-condensing). The enclosure measures 109.8mm (L) x 118.8mm (H) x 15.8mm (W) and weighs only 150g.
Terminals accept stranded or solid conductors up to 2.5mm². Use crimp ferrules for secure wiring. Mounting is simple on a T-section 35mm DIN rail. The device meets EN61326 EMC standards and carries IECEx/ATEX hazardous area certification.
To configure the MTL5575, connect a personal computer running MTL PCS45 software via a PCL45USB serial interface. On sensor failure, you can select upscale, downscale, or turn off the output. This flexibility helps prevent unsafe process conditions. A yellow LED provides clear status feedback, while a green LED confirms power.
First, ensure the power supply is within 20-35Vdc. Next, mount the unit on a 35mm DIN rail. Then, connect the input sensor (THC, RTD, or mV source) using appropriate wiring. For RTDs, use 2, 3, or 4 wires as needed. After that, wire the 4-20mA output to a load not exceeding 600Ω. Finally, apply power and verify the green LED lights up. Configure the device with the PCS45 software before placing it into service.
MTL5575 temperature converter (1 unit)
Terminal blocks (pre-installed)
Product label with model and rating
Quick start guide (printed)
Note: Cables, software, and mounting accessories are sold separately. No certificates or warranty documents are included in the package.
1. Can the MTL5575 accept a Pt100 RTD input?
Yes, it supports 2, 3, and 4-wire RTDs including Pt100 types.
2. What happens if the thermocouple breaks?
The device detects early burnout and drives the output upscale or downscale based on your configuration.
3. Do I need an external isolator with the MTL5575?
No. The built-in galvanic isolation (250V rms) eliminates the need for an extra isolator.
4. Which software configures this temperature converter?
Use MTL PCS45 software with the PCL45USB serial interface adapter.
5. How fast is the response time?
You can adjust it, but the factory default is 500ms for stable temperature readings.
| Brand Name | MTL |
| Model No. | MTL5575 |
| Product Type | Temperature Converter |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
