Tipovi i korištenje metode od illuminometara
1. Visual illuminometer: nezgodno to use, nisko točno, and rijetko korišteno.
2. Photoelectric illuminometer: commonly used selen photocell illuminometer and silicij fotoćelija illuminometer.
Composition and usage requirements of photocell illuminometer:
1. Sastav: microampere meter, shift knob, zero adjustment, ožičenje post, fotoćelija, V（ λ) Correct the composition of filters and other components.
2. Korištenje zahtjevi:
① fotoćelije treba use selen (Se) fotoćelije or silicij (Si) fotoćelije s dobar linearnost; Održava dobro stabilno i visoko osjetljivost even after longed work; When using High E, choose a photocell with high internal resistance, which has low sensitivity and good linearity, and is not easily damaged by strong light irradiation.
② Internal payment with V（ λ) Correct the filter, appropriate for using the illumination of a heterochromatic temperature light source, with small error.
③ The Reason for adding A Cosine Angle Compensator (Milky White Glass Or White Plastic) in Front of The Fotocell Is That when The Incident Angle Is Large, The PhotoCell deviates From The Cosine Rule.
④ The illuminometer should operativ at or near room temperature (the drift of the photocell changes with temperatura).
Usage of illuminometer
① Uključi uključeno napajanje napajanje.
③ Select a gear that is appropriate for measurement.
If only "1" is displayed at the left end of the display screen, it indicates excessive illumination. It is necessary to press the range key (⑧ key) to adjust the measurement multiple.
④ The illuminometer starts working and displays the illuminance value on the display screen.
⑥ Read and record the observed values displayed in the reader. The observed value is equal to the product of the displayed number in the reader and the range value.
For example, 500 is displayed on the screen, and the status is displayed in the bottom right corner" × 2000 ", with an illuminance measurement value of 1000000lx, i.e. (500 × 2000).
⑦ Press the lock switch again to cancel the read value lock funkcija.
⑧ During each observation, read three consecutive readings and record them.
⑨ After each measurement work is completed, press the power switch button to cut off the power supply.
⑩ Cover the photodetector and replace it in the box.
