The calibration method consists in comparing the value of a reference illumination with the value displayed on the luxmeter which is to be calibrated.
Figure 2 illustrates the device used for calibration.
The required device consists of:
The required device consists of:
a standard lamp of known luminous intensity IL
the luxmeter that will be calibrated.
The device provides an illumination which can be adjusted by the distance D separating the lamp from the luxmeter and which is spatially uniform on the receptive surface of the luxmeter.