The TunnelTech 601 Luminance photometer monitors the average luminance of a tunnel entrance and its surroundings
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.
Features & Benefits
|Measuring Units||candela/metre squared – cd/m2
|Measurement Range||0 – 6500
|Ambient Temperature||-20°C to +50°C
|Power Supply||220VAC or 24VDC
|Analogue Outputs||1 x 4-20mA current outputs as standard,
|Photodetector||metal/glass encased silicon diode photocell
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