Stevenson Screen MET 01

Manufactured and tested to UK Met Office standards this screen will meet the most demanding technical requirements. It is constructed from high performance plastics and polyester powder coated aluminium that will not degrade with time in the same way as more wooden types. They are in use throughtout the U.K. synoptic station network - for both manual and automated observation. Many are now used offshore - mainly on North sea oil rigs. Others are in use in Iceland, Ireland, Europem, Hong Kong, Africa and the Mddle east.

The UK Met Office conducted a detailed test into the performance characteristics of Stephenson Screens. Two with white only internal louvers, and two with black internal louvers were tested. As a result the UK Met Office considered that the use of black internal louvers produced a better barrier to radiation, especially when this is high - and therefore more representative readings.

Overall performance is similar to traditional wooden Screens. However this screen has a faster response time - a lower thermal lag. It has slightly better air flows although the psychometric constant is the same. Most importantly, the performance need not suffer - as with wooden Screens - because of a deterioration to the paint work between the painting cycles. This screen remains white and glossy just with a quick occasional clean.

The screen requires little or no maintenance at all. The materials used to construct the screen will last for many years. You won't need to maintain or paint them during their lifetime - just an occasional clean to the outside is all that’s required.

The roof and floor panels are made from a very high grade of UPVC - one which offers outstanding UV resistance as well as resistance to biological, chemical and insect attack. The louvers are made from a premium grade Acrylic (PMMA) with an added UV stabiliser togive an extremely low yellowing index.

The frame of the Screens is made from chrome-rich aluminium. This is subjected to a 10-stage conversion, priming and painting process, which finishes with the electrostatic deposition of a polyester powder followed by baking in an oven.

• Internal Width 491 mm x depth 314 mm x height 404 mm
• External Width 567 mm x depth 390 mm x height 579 mm
• Boxed weight of approximately 25 kilos.

The standard screen is supplied without any internal supports to allow it to house all maner of sensors or recording instruments. We offer the option of a standard mounting with brass clips for 4 thermometers.

A polyester powder coated (PPC) aluminium support stand can be purchased from us for this screen.

Alternatively, the screen can be mounted on your own existing of fabricated frame. Just remember to allow the air to circulate and have the screen approximately 1.2m above ground.

Please allow approximately 6 weeks for delivery.