Q: The laser power meter is inaccurate. Must the equipment be broken?
A: Not necessarily. According to actual statistics, more than 80% of the "uncertainty" are not hardware failures, but that the use conditions, operating methods and environmental settings do not meet the measurement requirements.
The essence of a thermoelectric power meter is "heat measurement" rather than direct "light measurement". Its reading accuracy completely depends on two prerequisites: stable light absorption and constant heat flow. Any factor that changes the absorption efficiency and disrupts the direction and speed of heat flow will directly become a measurement error.
Common reasons include:
Improper optical path setting (light spot off-center, incident angle is too large)
Wrong wavelength range selection
Power density exceeds probe damage threshold
Environmental thermal disturbances (temperature fluctuations, airflow, adjacent heat sources)
Abnormal cooling system (unstable water cooling flow, parallel water channels, aging cooling)
Operation error (no warm-up, no zero-setting, electromagnetic interference)
It is recommended to investigate item by item in the order of "external factors → operational factors → equipment factors". If the problem cannot be solved after investigation, please contact our technical support.
