The TunnelTech 601 Luminance photometer monitors the average luminance of a tunnel entrance and its surroundings. In accordance with Commission Internationale de l´Eclairage, (C.I.E.), publication 88, 1990 recommendations, the photometer monitors the average luminance within a 20 degree angle over a standard range of 0 – 6,500 cd/m2.
The detector is a metal/glass encased silicon diode photocell which is filtered to give a response that mimics the performance of the human eye. The detector is perfectly linear within its measuring range and has an instantaneous response to changing light levels.
Key Features
- Compliant with Commission Internationale de l´Eclairage, (C.I.E.), publication 88, 1990
- Measurement of tunnel entrance luminance – 0 – 6,500 cd/m2
- Calibrated using standards traceable to UK National Physical Laboratory
- Accuracy +/-1%
- Thermostatically controlled heater unit
- Rugged Aluminium housing to IP66
SpecificationImagesDocumentationProduct Enquiry
Feature |
Specification |
| Measurements | Luminance |
| Measuring units | candela/metre squared – cd/m2 |
| Measurement Range | 0 – 6500 |
| Ambient Temperature | -20°C to +50°C |
| Power supply | 220VAC or 24VDC |
| Construction | IP65 |
| Analogue outputs | 1 x 4-20mA current outputs as standard, |
| Photodetector | metal/glass encased silicon diode photocell |
| Lang | Filetype | Document | Size |
 |
 |
TunnelTech 601 Datasheet | 400kb |
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