Casella’s Campbell Stokes Sunshine Recorder is manufactured to a design based on British Meteorological Office (BMO) specifications. The sphere is made from well-annealed optical glass and the sunshine hours are recorded onto a card, which is inserted into the base of the unit. Each card is marked with hourly intervals and an optional transparent plastic template is also available to help measure the curved trace more accurately. The instrument is fully adjustable for operation at different geographical latitudes and leveling screws on the base ease installation. Two versions of the sunshine recorder are available, depending upon latitude.

The Casella Solarimeter has been designed to measure the intensity of total global solar radiation received at the
earth’s surface. Total radiation represents both direct and diffused sunlight received from the whole hemisphere.
The solarimeter is a passive device, requiring no power supply and provides a voltage output which may be read by a data logger or similar reading device and then converted into watts per square metre (W/m2). The sensor itself is based upon a silicon photo-detector that is housed within a weatherproof, anodized aluminum body and is therefore suited to reliable, long-term operation in outdoor conditions.

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Environmental Analytical Systems
286 Mask Island Drive
Barry's Bay, Ontario, Canada K0J 1B0

Phone: 613 756 0101
Toll Free (Canada only): 1 800 427 8591
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email: info@enviro-analytical.com

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