The diameter of the sensor wires determines the upper most operating temperature. The larger the diameter, the higher the temperature rating. Choose alloy 600 over 304 SS or 316 SS when higher temperatures are expected. The environment is another critical factor when determining the best material.
| Mineral Insulated (MGO) Thermocouple Suggested Upper Limits per Outside Diameter | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T/C Type | 1/25″ | 1/16″ | 1/8″ – 3/16″ | 1/4″ | 5/16″ | 7/16″ | ||||||
| °C | °F | °C | °F | °C | °F | °C | °F | °C | °F | °C | °F | |
| J | 500 | 900 | 700 | 1100 | 700 | 1200 | 700 | 1200 | 700 | 1200 | 700 | 1200 |
| T | 200 | 300 | 300 | 400 | 400 | 700 | 400 | 700 | 400 | 700 | 400 | 700 |
| K | 800 | 1400 | 1000 | 1800 | 1200 | 2000 | 1200 | 2000 | 1200 | 2000 | 1200 | 2100 |
| N | 800 | 1400 | 1000 | 1800 | 1200 | 2000 | 1200 | 2000 | 1200 | 2000 | 1200 | 2100 |
| E | 600 | 1000 | 700 | 1200 | 700 | 1200 | 1000 | 1800 | 1000 | 1800 | 1000 | 1800 |
The diameter of the sensor wires determines the upper most operating temperature. The larger the diameter, the higher the temperature rating. Choose alloy 600 over 304 SS or 316 SS when higher temperatures are expected. The environment is another critical factor when determining the best material.
| Mineral Insulated (MGO) Thermocouple Suggested Upper Limits per Outside Diameter | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T/C Type | 1/25″ | 1/16″ | 1/8″ – 3/16″ | 1/4″ | 5/16″ | 7/16″ | ||||||
| °C | °F | °C | °F | °C | °F | °C | °F | °C | °F | °C | °F | |
| J | 500 | 900 | 700 | 1100 | 700 | 1200 | 700 | 1200 | 700 | 1200 | 700 | 1200 |
| T | 200 | 300 | 300 | 400 | 400 | 700 | 400 | 700 | 400 | 700 | 400 | 700 |
| K | 800 | 1400 | 1000 | 1800 | 1200 | 2000 | 1200 | 2000 | 1200 | 2000 | 1200 | 2100 |
| N | 800 | 1400 | 1000 | 1800 | 1200 | 2000 | 1200 | 2000 | 1200 | 2000 | 1200 | 2100 |
| E | 600 | 1000 | 700 | 1200 | 700 | 1200 | 1000 | 1800 | 1000 | 1800 | 1000 | 1800 |
