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SL-3101 Dual Scotopic / Photopic Meter
 
  • Delivery on all items in stock to two weeks
  • Every product is calibrated to NIST traceable standards before shipment

Model SL-3101 for the creation of spectrally enhanced lighting designs

The Solar Light SnP-meter™  Model SL-3101 is a portable and innovative meter. It measures spectral response following the CIE scotopic and photopic action spectrum with on board calculations:

    • S/P ratio

    • Visually effective light level

    • Perceived brightness

This meter is used by lighting design professionals, researchers, lamp and ballast manufacturers, and energy management consultants.

Applications:

    • Architectural lighting design
    • Lighting efficiency measurements
    • Energy efficiency designing
    • Scotopic lighting research

Meter Specifications:

    • Dynamic range 2.6 x10^6 (6.5 digits)
    • Accuracy Within 0.2% FS
    • Non-linearity 0.003% integral non-linearity
    • Temperature coefficient 50 PPM/°C Max.
    • Sampling rate 3 per second
    • Screen refresh rate 10 per sec.
    • Operating temperature 0 to 50°C (non-condensing)
    • Batteries 4xAA Alkaline batteries
    • Battery life >40 hours continuous use
    • External power 9-12V AC or DC adapter. 100mA min.
    • Weight 18 oz. (510 g)
    • Size 4”W x 1.75”D x 7.6”H (10 x 4.35 x 19.3 cm)
    • LCD Size 2.5” x 0.5” (6.4 x 1.3 cm)
    • Program control 9-button keypad

Photopic Detector Specifications:

  • Spectral response: Follows CIE photopic spectral luminous efficiency curve (400-700nm) Figure 1
  • Angular response: 5% for angles <60°
  • Range:
    PMA2130 - 150,000 Lux, 14,000 ft-cd
  • Display resolution:
    PMA2130 - 1 Lux, 0.1 ft-cd
  • Operating environment: 32 to 120 °F (0 to +50 °C) no precipitation
  • Diameter: 1.6" (40.6 mm)
  • Height: 1.8" (45.8 mm)
  • Weight: 7.1 oz. (200 grams)

Scotopic Detector Specifications

  • Spectral response: Follows CIE scotopic spectral luminous efficiency curve (400-600nm) Figure 1
  • Angular response: 5% for angles <60°
  • Range:
    PMA2131 - 150,000 Lux, 14,000 ft-cd
  • Display resolution:
    PMA2131 - 1 Lux, 0.1 ft-cd
  • Operating environment: 32 to 120 °F (0 to +50 °C) no precipitation
  • Diameter: 1.6" (40.6 mm)
  • Height: 1.8" (45.8 mm)
  • Weight: 7.1 oz. (200 grams)

 

Photopic Angular Response
Photopic Spectral Response
Scotopic Angular Response
 Scotopic Spectral Response

 

Technical Papers and Protocols:

> Energy Conservation Using Scotopically Enhanced Fluorescent Lighting In an Office Environment by Office of Energy Efficiency & Renewable Energy - U.S. Department of Energy

> Spectrally Enhanced Lighting Program Implementation for Energy Savings by Pacific Northwest National Laboratory for U.S. Department of Energy

> Demonstration Assessment of Light Emitting Diode (LED) Street Lighting by U.S Department of Energy and Pacific Gas & Electric Company in the City of Oakland CA.

 

 

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