RF devices often use warmth or thermal effect as a perceptible action. Temperature verification therefore concerns both safety and how the company describes product action. A test disconnected from the real device and instructions has little regulatory value.
1. Define the question
The test should show normal temperature change, control at the highest level and longest time, the effect of slow movement or dwelling on one area, and whether sensors and automatic stop work. Surface temperature alone may not support claims of deeper tissue action.
2. Traceable test conditions
- Production-equivalent console, handpiece, software and accessories.
- Maximum output and critical levels.
- Specified coupling medium and body area.
- Environment, starting temperature and measuring equipment.
- Speed, pressure, time and repetitions.
- Measurement points, sampling rate and data method.
3. Select the worst case
Worst case means the most heating combination within allowed or reasonably foreseeable use, such as the highest level, smallest contact area, slow movement, longest duration or repeated application. The company should explain why the selected conditions are adverse.
4. Verify protection separately
Temperature display is not proof of control. Confirm sensor location, response, threshold, tolerance, output reduction or stop logic, and the state after sensor disconnection, software failure or poor contact.
5. Connect the report to the file
Model, handpiece, level and time in the report must match the instructions and technical requirements. A result for one handpiece or body area should not be extended to every mode.
Temperature-rise data are only one part of RF assessment. Real tissue action, delivered energy and intended purpose must still be considered.