IM 51011-01EN
46
51021
Class:
Conforms to Class AA in JIS C 1609-1: 2006
Measurement ranges:
0.00 to 9.99/99.9/999/9,990/99,900/999,000 lx
(automatic and manual range mode switching)
Linearity (accuracy): at 23°C ± 2°C
Reading of 3000 lx or less:
±2% of reading ± 1 digit
Reading greater than 3000 lx: ±3% of reading ± 1 digit
Response time:
5 sec. or less in auto range mode
2 sec. or less in manual range mode
Characteristics of oblique incident light:
(Deviation from the cosine law)
Angle 10° ± 1%
30° ± 2%
50° ± 6%
60° ± 7%
80° ± 25%
Characteristics of relative visible-spectrum response:
Deviation from the standard spectrum luminous efficiency f1’:
within 6%
Fatigue characteristics:
±1%
Temperature characteristics:
±3% (at 23°C reference and a range of –10 to 40°C)
Humidity characteristics:
±3%
Ripple measurement:
Illuminance measurement of fluorescent lamps
(except for high-frequency lighting) in the daytime
Measuring range: 100 to 3000 lx
Accuracy: at 23°C ± 2°C
± 7% of reading ± 1 digit
Summary of Contents for 51011
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