Light Meter

Features:

CE-Mark approval
Portability and simplicity one-hand operation
Accurate visible compensation filter 1 is used
CIE(ë): 1<2%, <3%, <5%, <8%, V(ë) match
Cosine corrected: 2<2%
With lux and fc two units select function
With PEAK/DATA HOLD function
With pocket hook
Hand-Held lightweight design

Applications:

■Indoo ■rOffice environmen
■tLabs ■Environment studies.

Specifications:
Display: 3½ digit liquid crystal display (LCD) with a maximum
reading of 1999.
Low battery indication: The " " is displayed when the
battery voltage drops below the operating level.
Operating environment: 0°C to 50°C, <70% relative humidity.
Storage temperature: -20°C to 60°C, 0 to 80% R.H. with battery
removed from meter.
Accuracy: Stated accuracy at 23°C±5°C, <75% relative
humidity.
Battery: 1.5V x 3pcs AAA size.
Dimensions: 155mm(H) x 48mm(W) x 24mm(D).
Weight: Approx. 2.9 oz.(81.2g) including battery.
Lux:
Sensor: Silicon photodiode
Range: 20lux, 200lux, 2000lux, 20000lux
20fc, 200fc, 2000fc, 20000fc
Resolution: 0.01lux, 0.01fc
Accuracy: ±(NO reading ± NO digits)

MODEL

8731-2

8731-3

8731-5

8731-8

8731

Spectral Response

CIE
Photopic

CIE
Photopic

CIE
Photopic

CIE
Photopic

White
Light

Spectral Accuracy

f1<2%

f1 <3%

f1 <5%

f1 <8%

NO spec.

Cosine Response

f2<2%

f2<2%

f2<2%

f2<2%

f2<2%

Total Accuracy For
All Common
Light Source

±(5%+2)

±(6%+2)

±(8%+2)

±(11%+2)

NO spec.

Total Accuracy For
Source A 2856K
Standard Light Source

±(1%+2)

±(1%+2)

±(1%+2)

±(1%+2)

±(3%+10)

 

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