This instrument is widely used by professional lighting designers, researchers, bulb manufacturers, and energy monitoring units.

The spectral response measured by it follows CIE bright and dark spectra, and has the following calculation functions:
·S/P ratio
·Visual effective luminescence level
·Brightness perception

Application:
·Architectural Lighting Design
·Lighting efficiency measurement
·Energy Efficiency Design
·Research on Dark Illumination

Instrument technical specifications:
·Dynamic range 2.6 x10 ^ 6 (6.5 digits)
·Accuracy within 0.2% FS
·Nonlinear 0.003% integral nonlinearity
·Temperature coefficient 50 PPM/° C Max
·Sampling rate of 3 per second
·Screen refresh rate of 10 per second
·Operating temperature 0 to 50 ° C (non condensing)
·4xAA Alkaline batteries, continuously used for over 40 hours
·External power supply 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-key keypad

Technical specifications of Mingshi detector:
·Spectral response: Following the CIE photoluminescence efficiency curve (400-700nm) Figure 1
·Angular response: 5% for angles <60°
·Scope: PMA2130 - 150,000 Lux, 14,000 ft-cd
·Display resolution: PMA2130 - 1 Lux, 0.1 ft-cd
·Operating temperature: 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)

Technical specifications of dark vision detector：
·Spectral response: Following the CIE dark light emission efficiency curve (400-600nm) Figure 1
·Angular response: 5% for angles <60°
·Scope: 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)