USB Logging Light Meter

SKU: ALX-1309

Important Note: This instrument does not have a logging memory. It must be connected to (USB) a computer with results logged via the software every 5 seconds. Collected data can be condensed inside the software to 5, 10, 15, 20 or 30 seconds.


The ALX-1309 is an easy to use light meter with USB interface, wide measuring range up to 400,000 Lux, large LCD display, 40 segment analogue bargraph, relative mode and user-selectable measuring units. Ideal for environmental monitoring, health & safety checks, and industrial applications.

  • Measures both lux and footcandles (FC), user selectable
  • Range selection of 4 lux ranges and 4 FC ranges
  • Impact-resistant ABS case with protective rubber boot
  • Silicon photo diode sensor and spectral response filter
  • Fully cosine corrected
  • Sensor connected to the instrument by a fixed 1.5 metre (approx.) coiled cable
  • Measuring rate of 1.5 times per second
  • 43mm LCD display with backlight, 40 segment bargraph and function indicators
  • Data hold freezes measured values
  • Min/max memory
  • Peak min hold and peak max hold
  • Relative readings from user set value
  • Over range indication
  • Reset function
  • Auto power off after 20 minutes of no activity
  • USB interface for real time data output to PC or laptop
  • Supplied with carry pouch, rubber boot, software, USB interface cable, protective lens cap and battery

Technical Specification

Range 0 to 400 / 4,000 / 40,000 / 400,000 Lux
0 to 40 / 400 / 4,000 / 40,000 FC
Resolution 0.1 / 1 / 10 / 100 Lux
0.01 / 0.1 / 1 / 10 FC
Accuracy ±5% of reading ±10 digits below 10,000 Lux
±10% of reading ±10 digits above 10,000 Lux
Power 1 x 9V PP3 Alkaline Battery (LR-61)
Dimensions 170 x 80 x 43mm including rubber boot
Weight 390g

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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