Anemometers and Windvanes in action!
Windspeed Ltd (Vector Instruments), 113 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
Windspeed Limited (trading as Vector Instruments)
Tel.: +44 (0) 1745 350700 (08:30-13:00hrs UK time)
Click for info on: Wind Speed sensors Click for info on: Wind Direction Sensors Click for info on: Masts + Mountings Click for info on: Air Temperature sensors Click for info on: Masts + Mountings
 Wednesday, April 24 2024  Home   Products   Mounting Hardware   Dual Instrument Search site:  

Latest Weather...
(Rhyl, N.Wales, UK)
Wind Speed:  4.0 mph
Wind Direction:  092 °
Air Temp.:  6.7 °C
Rel. Humidity:  95.9 %
Rain (last Hr):  1.8 mm
(updated at: 04:05 UTC)

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    *** Celebrating more than 40 years manufacturing & servicing High Quality Vector Instruments Anemometers and Windvanes at Windspeed Ltd ***
    Dual Mounting Arms (Cross-Arms), types 405-1 and 405-1L
    Note: The type "405-1" family of dual-mounting arms (cross-arms) shown on this page is available only until stocks are exhausted.
    Equivalent functionality can be realised using two of our new type "415" side-arms which have the added ability to mount to a much wider range of mast/pole/tower sizes/shapes.

    A dual-mounting arm (also known as a cross-arm) is a convenient method of mounting both windspeed and direction sensors on one mast top. The close proximity of anemometer and windvane when mounted on a dual-mounting arm can affect the accuracy of the measurement, so for high-precision applications (e.g. wind assessment) we recommend that only our 405 single-mount or side-arms/booms are used in those cases.

    The 405-1 uses a similar top fitting to the 405 single instrument mount, but includes a dual mounting arm with attachment points for an anemometer and windvane at either end giving a 500mm spacing between them.

    Note that there will be a degree of "shading" of the instruments for some wind directions (i.e. one instrument can interfere with the wind flow before it reaches the other) and there is a longer version (with 600mm instrument spacing), the 405-1L, which reduces this effect (and should always be used for mounting the larger SRW1G windvane).

    405-1/135 and 405-1L/135 versions of these mountings are available for both which have a larger top-fitting, which (like the 405/135 single mount variant) will fit over a 1.35" diameter mast/pole (i.e. 1" BSP). Other sizes and custom top-fittings are available to fit other mast top dimensions (please enquire).

    Note that a 405-OM mount can be used to mount a T351 series temperature sensor to the centre of a 405-1 or 405-1/135 cross-arm.

    Windspeed Ltd (Vector Instruments)
    Windspeed Limited (trading as Vector Instruments),
    113 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
    Tel: +44 (0) 1745 350700   Fax: +44 (0) 1745 344206
    Website design and content is copyright (c) 2003-2024 Windspeed Limited (unless otherise stated). All trademarks are acknowledged.
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