How do I calibrate the Illuminance Meter?
Illuminance meter calibration process of random measurement errors mainly include external light interference, changes in temperature and humidity, voltage fluctuations in the regulated DC power supply, the standard lamp moving process of vibration and personnel readings.
In these random measurement errors, some are unavoidable, which requires measures to minimize the impact of error.
Illuminance meter calibration environment should be in a constant temperature and humidity of the dark room, in order to reduce the influence of external light, temperature and humidity, illuminance meter should be installed in a stable workbench (there should be no strong magnetic field around to prevent electromagnetic interference);
The indoor temperature should be kept at (20±5)℃ (photocell drift changes with temperature change).
The room should be dry, humidity is less than 85% RH. due to humidity also has an effect on the illuminance meter;
For this reason, the light probe of the illuminance meter is required to have a better sealing performance, and the illuminance meter that is not used for a long time, * it is good to be able to energize the meter once in a while at intervals.
In order to minimize the impact of vibration caused by the standard lamp moving process, the choice of light rail as well as the slide, and in the measurement process of slow sliding to reduce the impact of vibration.
The personnel reading problem, it is necessary to check the personnel with considerable illuminance meter calibration knowledge and skillful operation skills, and in the illuminance meter calibration process conscientious and responsible.
Illuminance meter specific operating steps, illuminance meter (or lux meter) is a specialized measurement of luminosity, brightness instrumentation.
It is the measurement of light intensity (illuminance) is the degree of the object is illuminated, that is, the surface of the object received by the luminous flux and the ratio of the illuminated area.
The illuminance meter is usually composed of a selenium photocell or silicon photocell and a microammeter.
