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光度计量中，照度计是一种常用的工作计量器具。照度计的示值可用发光强度标准灯在测光导轨上校准。现仅就校准一处示值评定其不确定度并确定示值误差。一、核准方法和数字模型1．将标准灯和服度计的探测器安装在测光导轨上，并调整好它们的位置（如图）。式中I（i）＝256．2Cd
Photometric measurement, the meter is a commonly used work measuring instruments. The indication of the illuminance meter can be calibrated on the metering guide with the luminous intensity standard lamp. Now only calibrate a show the value of its uncertainty and determine the indication error. First, the approval method and digital model 1. Install the standard lamp and service probe on the metering track and adjust their position (see picture). Where I (i) = 256.2Cd