LED Light Meter

SKU: ALX-3809


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

Calibration Options

A calibration service can be purchased for this unit. Once the Service has been performed a certificate of calibration is produced and dispatched with your order. Calibration Services are performed on receipt of your order and as such will delay shipping. Details and options are outlined below.

Traceable Calibration (Light) Price
Issued at 5 points: 20, 100, 1000, 3000 & 5000 Lux
Additional points: From 20 to 10,000 Lux
£22.00 per point
Traceable certification is adequate for most applications and meets the calibration requirements of ISO 9001. All measurements contained in this type of certification are traceable back to National UKAS Standards.

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