Description
The ALX-3809 is a professional LED light meter specifically calibrated to a relative spectral sensitivity wavelength of 550nm to the JIS standard C 1609-1993. It measures corrected LED day white light spectrum. With a user selectable light source it can also measure normal light sources. It has a wide measuring range up to 400,000 Lux, large LCD display and user-selectable measuring units. It is ideal for environmental monitoring, health & safety checks, and industrial applications.
- Measures both lux and footcandles (FC), user selectable
- Range selection of 5 lux ranges and 4 FC ranges
- Manual or auto ranging
- Over range indication
- Silicon photo diode sensor and LED spectral response filter
- Fully cosine corrected
- User selectable light source
- Zero adjustment
- Sensor connected to the instrument by a fixed 1.5 metre (approx.) coiled cable
- Measuring rate of 1.5 times per second
- 50mm LCD display with backlight, 40 segment bargraph and function indicators
- Data hold freezes measured values
- Min, max or average memory
- Auto power off after 5 minutes of no activity (can be user disabled)
- Impact-resistant ABS case
- Supplied with protective lens cap, soft carry pouch and batteries
Technical Specification
| Range | 0 to 40 / 400 / 4,000 / 40,000 / 400,000 Lux
0 to 40 / 400 / 4,000 / 40,000 FC |
| Resolution |
0.01/1/10/100 Lux
0.01/0.1/1/10 FC |
| Accuracy | ±3% of reading ±10dgts |
| Power | 4x 1.5V AAA Alkaline Batteries (LR-3) |
| Dimensions | 162 x 63 x 28mm |
| Weight | 250g |