The MTL5581 is a single-channel signal isolator from Eaton’s MTL5500 Series. It handles millivolt and thermocouple inputs. You can use it in Zone 0 hazardous locations. This device provides galvanic isolation up to 250V rms. Its compact design fits on 35mm DIN rails.
Additionally, the Eaton MTL5581 delivers excellent linearity and repeatability. The transfer accuracy stays below 0.05% of reading or ±5µV. Temperature drift remains under 2µV/°C. These features make it suitable for precise temperature monitoring.
The input accepts any DC millivolt source. Over range extends to ±55mV. The output signal range goes from 0mV to ±50mV. Load resistance is 60Ω normally, with a maximum of 600Ω.
Power supply voltage ranges from 20 to 35V DC. Current consumption is only 30mA. Power dissipation measures 0.7W typical at 24V. At 35V, it reaches 0.91W.
Response time settles within 10% of final value in 150µs. Switching frequency covers DC to 4 kHz. Under/over range capability reaches ±55mV.
Two switches control early burnout functionality. You can enable or disable the safety drive. Moreover, you select upscale or downscale operation. This helps detect broken sensors.
Isolation stands at 250V rms between safe-area circuits and power supply. This protects downstream equipment. It also improves signal integrity.
Product length is 109.8 mm. Height measures 118.8 mm. Width is only 15.8 mm. Weight equals 150 g. Mounting method uses T-section 35mm DIN rail.
Minimum ambient operating temperature is -20°C. Maximum ambient operating temperature is 60°C. Storage temperature ranges from -40°C to 80°C. Humidity tolerance spans 5-95% relative humidity, non-condensing.
A green LED indicates power status. This gives a quick visual confirmation. Troubleshooting becomes easier as a result.
First, mount the MTL5581 on a standard 35mm DIN rail. Ensure the rail is securely fixed. Next, connect conductors up to 2.5mm² stranded or single-core. Use crimp ferrules for reliable electrical connections.
Furthermore, keep the isolator away from strong electromagnetic interference. Maintain proper ventilation around the unit. For hazardous area use, follow local wiring regulations. Verify the power supply is within 20-35V DC before energizing.
Finally, configure the early burnout switches as needed. Test the output signal with a known millivolt source. Confirm the response time meets your application requirements.
1 x Eaton MTL5581 signal isolator
1 x product label
2 x mounting clips
4 x terminal covers
Note: No certificates or warranty documents are included. These items ship separately.
Shipping carrier: Fedex, UPS, DHL
1. Can the MTL5581 work with Type J thermocouples?
Yes, it accepts any DC millivolt source. This includes all common thermocouple types. You just need to scale the output accordingly.
2. What happens if the input exceeds ±55mV?
The unit shows an over range condition. It will not be damaged immediately. However, accuracy may degrade beyond the specified range.
3. Does the Eaton MTL5581 require external programming?
No programming is necessary. The early burnout switches provide basic configuration. All other parameters are fixed by hardware design.
4. How do I clean the isolator in a harsh environment?
Use a dry, lint-free cloth. Do not use solvents or compressed air. Keep the ventilation holes free from dust.
5. Is the 150µs response time typical or guaranteed?
It is a typical value at 25°C. Most units meet this spec under normal conditions. Temperature extremes may slightly affect response speed.
| Brand Name | MTL |
| Model No. | MTL5581 |
| Product Type | Millivolt/Thermocouple Isolator |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
