Skye MiniMet, Руководство по установке

Страница: 26 / 58

10. MOUNTING A SURFACE WETNESS SENSOR
The surface or leaf wetness sensor is usually mounted using a long or short arm
bracket, depending on the requirements of the installation. If you have purchased
the sensor plus its accessory directly from Skye, the bracket will already have been
fitted to the instrument for you, ready for mounting.
If you have purchased the items separately, please follow these
instructions to fit the mounting bracket to your sensor.
Unscrew the 4 screws on the top (grid side) of the surface wetness sensor casing and remove the top, you will
see the instrument case has a 'double skin'. There are four mounting holes outside the inner compartment,
one in each corner, which are used for attaching the mounting bracket. Screw the instrument case to the
screen, using the supplied nuts and bolts You will need a small, long screwdriver for this job. Note that even
though the instrument casing is square, the mounting holes are not squarely placed.
Tighten these four mounting screws securely but gently, and replace the instrument base. TAKE CARE to
orientate the top correctly to prevent damage to the soft rubber 'O' ring seal.
The bracket has four mounting holes on its back plate, suitable for bolting to a wall or vertical surface. It is
supplied as standard with a pair of 'V' bolts, washers, nuts and end caps used for fixing to a pole or mast up
to a maximum diameter of 50 mm. See Appendix 5.
Plug and screw up (do not overtighten) the surface wetness sensor connector into the DataHog or MiniMet
logger socket marked Surface Wetness (or 0-2 V on some DataHogs) and use plastic cable ties to prevent
cable movement and damage from rubbing.
The surface wetness sensor can be mounted at any height or angle, according to the surface under study,
which it is simulating. For example, vertically to simulate an exposed, painted wall, or at an angle typical of
leaf angle in a crop. Most typically, it is mounted horizontally for convenience.
23
MiniMet Installation