Skye MiniMet, Руководство по установке

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5. RADIATION SCREENS FOR RELATIVE HUMIDITY AND AIR TEMPERATURE
SENSORS / LOGGERS
Radiation screens have a dual purpose. Firstly, they provide shading for the air temperature sensor and
secondly, it provides a physical protection for the delicate relative humidity transducer, located at the probe
tip next to the temperature sensor.
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This has a specially designed, white aluminium reflecting screen, is naturally aspirated and has no direct line
of sight path to allow reflected radiations to cause errors in the temperature measurement.
If you have purchased your radiation screen with a RH / temperature probe, or DataHog or MiniMet with
integral RH / temperature sensors directly from Skye, the screen will have already been fitted to the
instrument for you, ready for mounting.
If you have purchased the items separately, please follow these instructions to fit the radiation screen to your
instrument.
Unscrew the 4 screws on the underside of the probe or datalogger and remove the base, 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 radiation screen.
Undo the 4 screws on the white, protruding pillars on the flat underside of the radiation screen, and use
these to screw the instrument case to the screen. 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 base correctly to prevent damage to the soft rubber 'O' ring seal, especially avoiding the
battery ribbon and battery clips in the case of DataHog or MiniMet datalogger.
The bracket has four mounting holes on the flat back plate, suitable for bolting to a wall or vertical surface.
They are 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. Use plastic cable ties to prevent cable movement and
damage from rubbing.
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MiniMet Installation