Light Meter: Digital Auto Ranging to 400,000 LUX (DT-1309) Data-Logging

DT-1309 Auto-Ranging Digital Light meter is a precision instrument that is used to measure illuminance (LUX / Ft-cd) It meets the CIE photopic spectral response and it is fully cosine corrected for the angular incidence of light. The illuminance meter is compact, tough and easy to handle and use. The light sensitive component used in the meter is a very stable, and incorporates a long-life silicon photo diode and spectral response filter for best accuracy.

• 40-segment Analog bar graph
• Light measurement to 400,000 LUX
• High Accuracy and Fast response
• Data-hold function holds measurement value
• Auto zero function
• Remote light sensor on 12" (305mm) coiled cable - expandable to 24"
• Meter corrected for spectral relative efficiency
• Built-in Correction factor for non-standard light sources
• Peak-hold capture function for short duration light pulses
• Auto power off after 20 minutes (can be disabled)
• Max / Min measurements
• Relative reading
• Easy to read large backlit display
• Threaded tripod mount
• USB PC Interface Allows Data Logging on your PC
• Auto ranging

Specifications:

• Display : 3-3/4 digit LCD with high speed 40 segment bar graph
• Measuring Range:
  • 400.0 LUX (40 FC)
  • 4,000 LUX (400 FC)
  • 40,000 LUX (4,000 FC)
  • 400,000 LUX (40,000 FC)
• Max resolution: 0.1 LUX / 0.01 FC
• Over range Display: LCD will show “OL” symbol
• Spectral Response: CIE Photopic. (CIE human eye response curve)
• Spectral Accuracy: CIE Vλ function f1’≤6%
• Cosine Response: f2’ ≤2%
• Accuracy:
  • <10,000LUX: ±5% rdg ±10d
  • >10,000LUX: ±10% rdg ±10d
• Repeatability: ±3%
• Sampling Rate: approximately 1.5 seconds
• Photo Detector: Silicon photo diode and Spectral response filter.
• Operating humidity range: 0 to 80% RH
• Operating temperature range: 32° to 104° F (0° to 40° C)
• Storage humidity range: 0 to 70% RH
• Storage temperature range: 14° to 140° F (-10° to 50° C)
• Storage Temperature & Humidity : 14° to 140° & 0 to 70% RH.
• Power Source: 1 piece 9V battery
• Photo detector Lead Length: 50" (approx.)
• Dimensions:
  • Meter: 6.7" x 3.1" x 1.6"
  • Probe: 4.5” L x 1.5” D x 2.3” W
• Weight: 14 oz. (390g)

Supplied with:

• Rugged instrument enclosure
• Carrying case with zipper
• Instruction manual
• USB cable (connects PC to meter)
• Windows^® software on CD-ROM (Hardware Requirements: Windows^® 95/98/2000/XP Operating system 486 PC or above)
• (1) 9v alkaline battery