1. Regular Calibration Cycle
Annual calibration: This is the most common recommendation and applies to most home electronic blood pressure monitors.
Shorter cycle for frequent use: If used frequently (e.g., daily measurements), it is recommended to calibrate every six months.
Comparison with mercury sphygmomanometer: When self-testing at home, you can compare the electronic blood pressure monitor with a mercury sphygmomanometer. If the difference exceeds 5mmHg, immediate calibration is required.
2. Special Circumstances
Low usage frequency: If the device is used very infrequently within a year (e.g., only a few measurements), the need for calibration may be reduced, but regular checks are still recommended.
Professional calibration channels: It is recommended to have the device calibrated by a national metrology and testing department, manufacturer, or authorized service center to ensure accuracy.
3. Calibration Precautions
Preparation before calibration: Ensure the device is left at room temperature for 30 minutes and has sufficient battery power.
Verification after calibration: After calibration, take measurements for three consecutive days to confirm data stability.
