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- 0 to 3000 lx in switch selected, three ranges
- Cosine and color corrected
- Compact and light weight (0.9 kg)
- Output to recorder (standard)
- Taut-band suspension type indicator
- Standard carrying case
- No power source required
| Model | General Purpose |
|---|---|
| Measuring Range | 0 to 1000 lx 0 to 30 lx 0 to 3000 lx |
| Accuracy | ± 7% of reader (23°C ± 2°C) |
| Photocell | Selenium cell with plastic molding |
| Approx. Photocell Lead Length | 1.1 m 3.6 ft |
| Color Correction | By color-correcting filter. |
| Output | 10mV ±5%, output resistance approx. 4kΩ. |
| Indicator | Taut band suspension type with a mirror scale |
| Operating Temperature Range | -10 to 40 ºC 32 to 104 ºF |
| Humidity Range | 85% or less |
| Aprrox. Dimensions (Carrying Case) | 6 1/8 x 6 1/2 x 3 1/8 in 155 x 165 x 80 mm |
| Aprrox. Weight | 0.9 kg 2.0 lb |
| Accessories Supplied at No Extra Cost | Carrying case 1pc. |
| Applicable Standard | Designed based on JISC 1609-1993 CLASS A |
| Cosine Correction | Angular errors of light incidences on the cell are corrected by the globe covered on photocell (with spectral transmission characteristics) Angel of incidence 10° within ± 1.5%. 30° within ±3%. 60° within ±10%. 80° within ± 30%. |
| Operating Principle | When irradiated, the selenium photocell generates a potential differences, and the photocurrent is read on the DC ammeter which is calibrated in lx.
Color-correcting filters The photocell response to light varies with the angel of incidence (so-called cosine law) due to the reflection from the surface of the cell. Angular errors are corrected using cosine correction globe with the photocell. |