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Item number: M502B
This High Precision Luxmeter
Due to its class C accuracy, this meter is used primarily as an industrial measuring instrument for planning, installing, inspecting and monitoring lighting systems, as well as for the assurance of compliance with specified lighting conditions. Its four measuring ranges with automatic or manual range selection cover a broad span from 0.1 to 199,900 lx with an accuracy level of ± 3% ± 1 digit. V(λ) matching deviation, which amounts to f1‘ < 7.5%, is considerably better than the permissible error limit for class C specified in the standards
| Illuminance [Lux] | 0.1 lx … 199 900 lx / 0.01 fc … 19990 fc |
| Measuring ranges | 4 |
| Measuring range selection | Automatic / manual |
| Measuring rate | 2 per second |
| Measuring method | Distance measurement |
| Measuring sensor | Silicon photodiode with V (λ) filter |
| Probe with tripod thread | • |
| Measurement cable | 1.5 m, firmly connected |
| Measured value memory | 100 measured values |
| Error limit – V(λ) adapted (f1‘), typical | < 7.5 % |
| Error limit – overall error, typical | ≤ 15 % |
| Accuracy | ± 3 % of reading ± 1 digit |
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