Axial thermometers are used when it is possible to completely immerse the thermowell into the medium at a pressure not exceeding the permissible values. The immersion thermometer is inserted into a special threaded thermowell, which is screwed into a boss provided on the pipeline or equipment in a place convenient for observing thermometer readings. In order to avoid distortion of the thermometer readings, it is recommended to lubricate the immersion stem with a special paste to ensure contact between the stem and the thermowell.
| Implementation | Submersible |
| Measuring environment | Water (aqueous glycol solution) |
| Permissible pressure PN, bar | 10 |
| Temperature range ℃ | 0 to +120 |
| Precision class | 2 |
| Protection rating | IP41 |
| Connection thread | UNI ISO 228/1 |
| Transport and Storage Temperature ℃ | От -20 до +60 |
| Average service life, years | 10 |