Examine the variations between the utility model and the standard illuminance meters.
The DC power supply of the utility model illuminance meter merely makes use of a 3V battery, eliminating the need for a photometric head. Its features include being easy to move, having a responsive Sensitivity, and having the decoder, display driver, and display integrated into an integrated circuit card. The voltage conversion circuit, switch, photoresistor, test circuit, A/D converter, decoder, and display driver are sequentially connected in series with each other and with the photoresistors, which serve as photoelectric conversion devices in standard illuminance meters and contain a DC power supply.
Structural features of the utility model illuminance meter:
1. Exactness The precision of the light meter determines whether it is accurate or not. It is vital to purchase a lux meter with excellent accuracy at an affordable price because, of course, it is also closely tied to its price. The mistake should typically not be higher than 15%.
2. There are a wide variety of color compensating light sources. In addition to more equally distributed ones like incandescent bulb series, others focus on red high-pressure lamps with longer wavelengths or blue-violet ones with shorter wavelengths, such as daylight fluorescent lights. Because sensitivity might vary slightly, a moderate amount of correction is required.
3. Cosine restitution Everyone is aware that the incidence angle of the light source influences the brightness of the lighted surface. The incident angle between the sensor (Sensor) and the light source will also inevitably alter the reading value of the light meter when measuring with one.
Therefore, it is important to consider if a decent illuminance meter has the capability of cosine adjustment.
4. The illuminance meter's size and weight allow for a variety of uses, and it is frequently employed at various times and locations. Therefore, the most crucial requirement for the illuminance meter is a portable illumination meter that is tiny and light in weight.
