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Ideal 61-686 Digital Light Meter

Manufacturer: Ideal Industries Inc.

Item #: IDL-61-686   •   MFG #: 61-686


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The 61-686 meter measures visible light from LED, fluorescent, metal halide, high-pressure sodium, incandescent and other light sources.

The foot-candle unit is defined as the amount of illumination the inside surface an imaginary 1-foot radius sphere would be receiving if there were a uniform point source of one candela in the exact center of the sphere. Alternatively, it can be defined as the illuminance on a 1-square foot surface of which there is a uniformly distributed flux of one lumen. This can be thought of as the amount of light that actually falls on a given surface. The foot-candle is equal to one lumen per square foot.

The SI derived unit of illuminance is the lux. One foot-candle is equal to approximately 10.764 lux, although in the lighting industry, typically this is approximated as 1 footcandle being equal to 10 lux.

  • Features

    • Measures all visible light sources
    • Measures in four ranges up to 20,000 Foot Candles or 200,000 Lux
    • +/- 3% basic accuracy
    • Data hold mode
    • Max reading mode
    • Auto zero adjustment
    • Low battery indication
    • Auto power off
    • Remote sensor with 59 in. (1.5m) cable
    • 2-year warranty
  • Specifications

    • Display: 2000 count LCD display
    • Sensor: Silicon photodiode and filter
    • Measuring Range: 200, 2000, 20000, 200000 Lux; 20, 200, 2000, 20000 Footcandles
    • Accuracy: ±3% (Calibrated to standard incandescent lamp 2856°K) +/- 6% all other visible light sources
    • Angle deviation from cosine characteristics: 30°: ±2%; 60°: ±6%; 80°: ±25%
    • Power Supply: 9V NEDA 1604, IEC 6F22, JIS 006P battery x 1pc
    • Battery life: Approximately 200 hours
    • Dimensions: Meter: 1.5 (H) x 2.2 (W) x 5.1 (L) in.; Sensor: 9.8 (H) x 2.2 (W) x 3.1 (L) in.
    • Weight: 8.8 oz. with battery
  • Item Includes

    • User's manual
    • carrying case
    • 9V battery
  • Warranty

    • 2 Year

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