Portable Luxmeter 3286A (DISCONTINUED)
Notice: This product was discontinued on Jan 14, 2010.
- For measuring the low intensities of illumination from 0 to 300 lx in 5 ranges.
- Cosine and color corrected
- Output to recorder (Standard)
- Taut-band suspension type indicator
- Standard carrying case and pocket light
| Model | High-Sensitivity |
|---|---|
| Measuring Range | 0 to 10 lx 0 to 100 lx 0 to 3 lx 0 to 30 lx 0 to 300 lx |
| Accuracy | ± 7% of reader (23°C ± 2°C) |
| Photocell | Selenium cell with plastic molding |
| Approx. Photocell Lead Length | 1.4 m 4.6 ft |
| Color Correction | By color-correcting filter. |
| Output | 1V ± 5%, output resistance less than 1Ω. |
| Indicator | Taut band suspension type with a mirror scale |
| Power Source | One 9V dry cell (6F22) built in. |
| Operating Temperature Range | -10 to 40 ºC 14 to 104 ºF |
| Humidity Range | 85% or less |
| Aprrox. Dimensions (Carrying Case) | 6 1/8 x 6 1/8 x 3 3/8 in 160 x 160 x 92 mm |
| Aprrox. Weight | 1.1 kg 2.4 lb |
| Accessories Supplied at No Extra Cost | Carrying case 1pc, pocket light 1 pc. |
| Applicable Standard | Designed based on JISC 1609-1993 CLASS A |
| Cosine Correction | Angular errors of light incidences are corrected by the globe covered on photocell (with spectral transmission characteristics) Angle of incidences 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. |
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