|CIM - Cubic Illumination Meter|
This is the first commercial prototype instrument embodying the concept of Cubic Illumination as described in a paper by Christopher Cuttle MA FCIBSE FIESANZ FIESNA LC to the UK National Lighting Conference 1998. Cubic Illumination - the light falling on the six faces of a small cube - shows how a three dimensional object or building will appear when looked at from different angles; it gives much more comprehensive infomation than the more common planar illuminance.
The Megatron CIM, Cubic Illumination Meter, uses six Megatron Type M 16mm photocells in cosine-correcting mounts on the faces of a small cube, fitted with an extendable handle and tripod bush. This is connected via a two metre cable to a data logger, specially developed by Eltek from the Grant Squirrel Data Logger 1000. The CIM can be used in three ways:
The meter covers a wide range of lighting conditions from 0.1 lux to 10 000 lux; each sensor can be set to one of two ranges: 0.1 to 5 000 lux or 1 to 10 000 lux.
The Squirrel Data Logger can hold up to 64 000 readings; the infomation can be down loaded to a PC or other spread sheet or graphed as required.
The instrument comes in a robust carrying case, complete with computer software and a comprehensive instruction manual.
Dimension (mm): H x W x D 145 x 380 x 320 (including handle); weight: 4 kg.