Luxmeter “TKA-PKM” (31)
Main technical data and characteristics
| Illumination measurement range | 10 ÷ 200,000 lx |
| Basic relative error of illumination measurements (no more) | ± 8.0% |
| Including the limits of the permissible relative error caused by the nonlinearity of the sensitivity of the device (no more) | ± 3.0% |
| Including the limits of the permissible relative error caused by the deviation of the relative spectral sensitivity from the relative spectral luminous efficiency (no more) | ± 5.0% |
| Including the limits of the permissible relative error caused by the deviation of the calibration by source A (no more) | ± 3.0% |
| Including the limits of the permissible relative error caused by the spatial characteristic of the photometric head of the luxmeter (no more) | ± 5.0% |
| The limits of the additional relative error of the device when measuring optical quantities, due to a change in the sensitivity of the photometric head when the air temperature in the measurement zone changes for every 10 ° С (no more) | ± 3.0% |
| Liquid crystal display | 3½ digit |
Overall dimensions of the device
| Measuring unit (no more) | 130 x 70 x 30 mm |
| Photometric head (no more) | Ø40 x 30 mm |
| Device weight (no more) | 0.22 kg |
| Battery – Krona battery standard size | 9 in |
The difference in the function of the relative spectral sensitivity of the photodetector was corrected by a system of light filters to match the function of the relative spectral luminous efficiency of monochromatic radiation for daytime vision V (λ) in accordance with GOST 8.332. The effective reference plane of the Luxmeter coincides with the front plane of the cosine attachment of the photodetector. 
A well-proven light meter, reliable and easy to operate. Affordable price.