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Tiếng Việt
Type: Multi-functional digital illuminance meter with a detachable receptor head (supports multi-point measurements from 2 to 30 points)
Detector: Silicon photocell
Relative spectral response: Within 6% (f1´) of the CIE spectral luminous efficiency curve V(λ)
Cosine response (f2): Within 3%
Measurement range: Auto-ranging (features 5 manual ranges when utilizing analog output)
Measurement functions:
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Illuminance (lux)
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Illuminance difference (lux)
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Illuminance ratio (%)
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Integrated illuminance (lux·h)
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Integration time (hours)
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Average illuminance (lux)
Measuring ranges:
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Illuminance: 0.01 to 299,900 lx; 0.001 to 29,990 fcd
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Integrated illuminance: 0.01 to 999,900 x 10³ lx·h; 0.001 to 99,990 x 10³ fcd·h / 0.001 to 9,999 hours
Linearity: ±2% ±1 digit of displayed value
Temperature / humidity drift: Within ±3%
Digital output: USB
Analog output: 1 mV/digit, 3 V maximum; Output impedance: 10 kΩ; 90% response time: 28 ms
Display: 3- or 4-digit backlit LCD screen (automatically illuminated)
Power supply: 2 x AA batteries / AC Adapter AC-A308 (optional; handles 1 to 10 receptor heads) or AC-A311 (optional; handles 1 to 30 receptor heads)
Battery life: 72 hours or more (when utilizing alkaline batteries) under continuous measurement conditions
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