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Sentry ST520 - Specifications

Sentry ST520
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5
3. Specifications
Model
520
522
Sensor Element
SPC(Silicon Photocell)
Measuring Light Sources
Selection
General Light Source
FL (Fluorescent light source)
INC (Incandescent light source)
LED (LED light source)
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)
Correlated Color Temperature
Difference Measurement (⊿CT)
NO
YES
Measuring Range
Ev:0~80000 lx(0~7432 fcd)CT:99990 K Max.
Accuracy(at 25°C, 60% RH)
Ev:±(3%+2 Digital)(3000 lx, standard illuminant A measured)
x, y:± 0.02 (100 lx, RGB LED Light)
Resolution
Ev:1(0~9999), 10(Over 10000) , lx ;
0.1(0.0~999.9), 1(Over 1000), fcd ;
CT:1(0~9999), 10(Over 10000), K ;
x, y:0.001 ; u', v':0.001
Response Time
Approx. 1 sec.
Repeatability
x, y:±0.003 (100 lx, RGB LED Light)
Temperature Drift
Ev:±(5%+2 Digital)(3000 lx, standard illuminant A measured)
x, y:± 0.008(100 lx, RGB LED Light)
Humidity Drift
Ev:±(3%+2 Digital)(3000 lx, standard illuminant A measured)
x, y:± 0.005(100 lx, RGB LED Light)
Operation Temperature
32°F to 122°F (0°C to 50°C),Less than 80% RH
Store Temperature
14°F to 140°F (-10°C to 60°C),Less than 85% RH
Battery life
70 hours or longer continuous use
Multi-Display
Triple readings
Over range indication
Yes (〝-H I-〞)
Data Hold
Yes
Low battery indication
Yes
Auto Power Off
30 Minutes of idle
Weight
6.3 oz.(179g)without battery
Dimensions
Main Instrument:5.5 x 1.9 x 1.1 inch(140 x 49 x 29 mm)
Sensor Probe:6.5 x 2.0 x 1.4 inch(165 x 50 x 36 mm)
Accessories
9V Battery x1 , Instruction manual x1 , Carrying case x1
※ The addition function for 522 is denoted as (522) in the
following paragraph.