SENTRY ST520 illuminometer temperature brightness LED lamps tester ST-520 Chroma Meter/Color Meter digital Light Meter

Illuminance: Ev (lx or fcd)

Color Coordinate: (x,y), (u',v') (CIE 1960)

Correlated Color Temperature: CT, Δuv

Color Difference:(ΔEv,Δx,Δy), (ΔEv,Δu',Δv'), (ΔEv,Δu'v'), (One set of reference color)

(at 25°C/77°F, 60%RH)

Ev: ±(3%+2 digital) (3,000 lx, standard illuminant A measured)

x, y: ±0.02 (100 lx, RGB LED light)

Ev: 0~9999 lx: 1 lx, Over 10000 lx: 10 lx;

0.0~999.9 fcd: 0.1 fcd, Over 1000 fcd: 1 fcd;

CT: 0~9999 K: 1 K, Over 10000 K: 10 K;

x, y: 0.001; u'v': 0.001

Ev: ±(5%+2 digital) (3,000 lx, standard illuminant A measured)

x, y: ±0.008 (100 lx, RGB LED light)

Ev: ±(3%+2 digital) (3,000 lx, standard illuminant A measured)

x, y: ±0.005 (100 lx, RGB LED light)

Main Instrument: 140 X 49 X 29mm ( 5.51" x1.93"x1.14")

Sensor Probe: 165 X 50 X 36mm ( 6.50" x1.97"x1.42")