In order to keep measurement result correct, hot-wires must be calibrated regularly with the vary of circumstance. 为了保证测量的准确性,热线仪需随环境变化进行校准。
When hot-wires have to be used in an temperature or humidity variation environment, its calibration constants often changed consequently. 当热线工作于温湿度变化场合时,其特征参数随之变化。