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
English TunnelTech 601 Datasheet 400kb

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