Tunnel Luminance Meter

tunnel luminance meter

LUMIOS MkIII

tunnel luminance meter

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Options and accessories:

for tunnels

The LUMIOS MkIII measures the level of luminance, or brightness, created by natural light at the tunnel portals to ensure that the visual perception of drivers is maintained, both day and night, by avoiding sudden variations in lighting levels and potential ?black hole effect? when entering and exiting a tunnel. The LUMIOS MkIII can also be used for the measurement of luminance within the tunnel.

FEATURES

Measurement of luminance, or brightness, created by natural light at the tunnel portals
CIE Approved measurement of L20
Variable viewing angle within a range of 10 to 40? (factory preset)
Silicon photo diode, V? filtered for spectral response close to that of the average human eye
Rugged 316 stainless steel construction with IP66 protection rating
Heated window and enclosure
Self-contained intelligent analyser for direct connection to host controller
Suitable for measurement of luminance within the tunnel

BENEFITS

Designed specifically for monitoring tunnel portals
Rugged design to withstand extremes of weather conditions
Simple installation and mounting
Optional wash-wipe facility to minimise maintenance requirements
Flexible integration options

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