Installation Manual
19
11.1 Enclosure
The enclosure is made from fibreglass and is completely weatherproof. There is
minimal maintenance required, but particular care should be taken to the points
listed below.
11.1.1 Cable Entries
Care should be taken that all cable entries on the enclosure are properly sealed.
Ensure that the cable gland grips the cable tightly to ensure a proper seal. This is
particularly true of the gland on the top surface of the enclosure. Any unused
glands are blanked with the blanking plugs provided, which provide a good seal.
11.1.2 Desiccant
The enclosure contains packages of desiccant, which helps to reduce water vapour,
and should be regularly replaced. The frequency of replacement will depend on
how often, and for how long, the enclosure door is opened. In general the
desiccant will last for about 4-6 months if the enclosure door is opened for a few
minutes each week. More frequent changes of desiccant may be required in very
wet or humid conditions.
Some desiccant packs have an indicator which is blue when the desiccant is dry,
but which will turn pink as moisture is absorbed. When the desiccant fully changes
colour it should be replaced.
Used desiccant packs may be re-used if dried by placing in an oven at 120
C for
16 hours.
Ensuring all cable entry ports are properly sealed, as described above, will help
prolong desiccant life.
11.2 Regular Inspection
The Basic Weather Station is designed to operate remotely, without attention, for
long periods of time. However, regular preventative maintenance will pay
dividends, and so the station should be visited at regular intervals depending on
environmental conditions, its usage and the accuracy of measurements required
from the station.
Suggested schedules are given below, but these can be modified to suit your own
circumstances.
11.2.1 General
Every six months or so (and at least once a year) check all parts for misalignment
and damage. Check for any corrosion and apply suitable rust inhibitors, and check
and /or change the desiccant pack in the enclosure as detailed above. More regular
inspections are advised in very wet or humid conditions, or after severe storms.
Do not allow any contact between rust proofing compounds
and the datalogger or sensors. In particular, avoid spraying
such compounds close to the humidity sensor.
CAUTION
