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Sentry ST520 - Specifications

Sentry ST520
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5
3. Specifications
Model
520
522
Sensor Element
SPCSilicon Photocell
Measuring Light Sources
Selection
General Light Source
FL (Fluorescent light source)
INC (Incandescent light source)
LED (LED light source)
Measuring Function
IlluminanceEvlx or fcd
Color Coordinatex, y,u', v')( CIE 1960
Correlated Color TemperatureCT, 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
Ev0~80000 lx0~7432 fcdCT99990 K Max.
Accuracy(at 25°C, 60% RH)
Ev±3%+2 Digital3000 lx, standard illuminant A measured
x, y± 0.02 100 lx, RGB LED Light
Resolution
Ev10~9999), 10Over 10000 , lx ;
0.10.0~999.9), 1Over 1000, fcd ;
CT10~9999), 10Over 10000, K ;
x, y0.001 ; u', v'0.001
Response Time
Approx. 1 sec.
Repeatability
x, y±0.003 100 lx, RGB LED Light
Temperature Drift
Ev±5%+2 Digital3000 lx, standard illuminant A measured
x, y± 0.008100 lx, RGB LED Light
Humidity Drift
Ev±3%+2 Digital3000 lx, standard illuminant A measured
x, y± 0.005100 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.179gwithout battery
Dimensions
Main Instrument5.5 x 1.9 x 1.1 inch140 x 49 x 29 mm
Sensor Probe6.5 x 2.0 x 1.4 inch165 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.