Luxmeter photoelectric Yu16
Also, this device may be called: Yu-16, Yu 16.
Yu16 photoelectric luxmeter is designed for measuring illumination produced incandescent, fluorescent and natural light.
Basic measurement range - 25 lux, 100 lux, 500 lux.
Additional measurement limits - 2500 lux, 10000 lux, 50000 lux.
The basic error in the main range - ±10%.
Basic accuracy for extra range - ±15%.
Scale length - 90 mm.
Variation in the result of:
- Varying the angle of incidence of the light beam directed onto the surface of the photodetector, which differs from 0° - at 30° - not exceeding 1% at 60° - no more than 10%;
- Changes in the external temperature relative readings at +20° C - no more than 2% of the span per 10° C;
- Influence of an external magnetic field - no more than ±0,5% of full-scale.
Settling time of the mobile meter luxmeter with photocell connected - no more than 5 seconds.
Dielectric strength meter - 0.5 kV.
Dimensions selenium photocell - 50x60 mm.
Working part photocell - 25 cm2.
Dimensions meter - 120x120x62 mm.
Overall dimensions of the case luxmeter Yu16 - 200x195x80 mm.
Weight luxmeter with a photodetector and an absorber - 0.8 kg.
Weight in box - 1.5 kg.
Direct reading scale.
Operating conditions of devices luxmeters Yu16:
Ambient temperature - +10° C to +35° C.
Relative humidity - 80%.
Principle of operation luxmeters Yu16 is based on the phenomenon of the photoelectric effect. When the surface is illuminated solar cell in a closed circuit consisting of a photoelectric cell and magneto meter, a current which deflects the moving part of the meter. Luxmeter Yu16 represents magnetoelectric pointer instrument with the moving part on extensions.