FEATURES
- Precision instrument for light luminance and color coordinate.
- Meet CIE (International Commission on Illumination) photopic spectral response.
- Color temperature or Correlated color temperature.
- Custom reference value of color difference mode.
- Lux or foot-candle unit selection.
- Magnetic mount.
SPECIFICATIONS
Model name | ST520 | ST520S | ST522 |
Light Source | General Source | LED Source | Source Selectable |
Measuring Function | Illuminance:Ev (lx or fcd) Color Coordinate:(x, y) , (u', v') (CIE 1960) Correlated Color Temperature:CT, ⊿uv Color Difference:(⊿Ev,⊿x,⊿y) , (⊿Ev,⊿u',⊿v') , (⊿Ev,⊿u'v') , (One set of reference color) |
Illuminance:Ev(lx or fcd) Color Coordinate:(x, y),(u', v')(CIE 1960) Correlated Color Temperature:CT, ⊿uv Color Difference:(⊿Ev, ⊿x, ⊿y),(⊿Ev, ⊿u', ⊿v'), (⊿Ev,⊿CT,⊿u'v')(One set of reference color) |
|
Measuring Range | Ev:0~80,000 lx (0~7,432 fcd) CT:99,990 K Max. | ||
Accuracy (at 25°C/ 77°F, 60% RH) |
Ev:± 5%(3,000 lx, standard illuminant A measured) x, y:± 0.02(100 lx, RGB LED Light) |
Ev:±(3%+2 Digital)(3,000 lx, standard illuminant A measured) x, y:± 0.02 (100 lx, RGB LED Light) CT:± 4 % |
|
Resolution | Ev:1(0~9,999),10(Over 10,000), lx ; 0.1(0.0~999.9),1(Over 1,000), fcd ; CT:1(0~9,999),10(Over 10000), K ; x, y:0.001 ; u', v':0.001 |
||
Response Time | Approx. 1 sec. | ||
Temperature Drift | Ev:±(5%+2 Digital)(3,000 lx, standard illuminant A measured) x, y:± 0.008(100 lx, RGB LED Light) |
||
Humidity Drift | Ev:±(3%+2 Digital)(3,000 lx, standard illuminant A measured) x, y:± 0.005(100 lx, RGB LED Light) |
||
Operation Temperature | 0°C to 50°C (32°F to 122°F),Less than 80% RH | ||
Store Temperature | -10°C to 60°C (14°F to 140°F),Less than 85% RH | ||
Weight | 179g(6.3 oz.) without battery | ||
Dimensions | Main Instrument:140x49x29 mm(5.5"x1.9"x1.1") Sensor Probe:165x50x36mm(6.5"x2.0"x1.4") | ||
Accessories | 9V Battery, Instruction manual, Carrying case, Sleeve |