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Measured quantities:
lux - fcd - W/m2- µW/cm2
µmol/(m2s)- cd/m2 - µW/lumen
Power Supply
Batteries: 3 1.5V type AA batteries
Autonomy: 200 hours with 1800 mAh alkaline batteries
Power absorbed with instrument: 20 μA
Connections
Input for probes: 8-pole male DIN45326 connector
Operating conditions
Working temperature: -5…50 °C
Storage temperature: -25…65 °C
Working relative humidity: 0…90% RH without condensation
Protection degree: IP67
Instrument
Dimensions (Length x Width x Height): 140 x 88 x 38 mm
Weight: 160 g (complete with batteries)
Material: ABS
Display: 2x4½ digits plus symbols
Visible area: 52x42 mm
Specifications of the LP471PHOT probe
Measuring range (lux): 0.10…199.99/ …1999.9/ …19999/ …199.99·10^3
Resolution (lux): 0.01/ 0.1/ 1/ 0.01·10^3
Spectral range: in agreement with standard photopic curve V(λ)
Class: B
Calibration uncertainty: <4%
f’1 (in agreement with photopic response V(λ)): <6%
f2 (response according to the cosine law): <3%
f3 (linearity): <1%
f4 (instrument reading error): <0.5%
f5 (fatigue): <0.5%
α (temp. coeffi cient) f6 (T) <0.05%K
Drift after 1 year: <1%
Working temperature: 0…50°C
