Gill Instruments Ltd
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MetPak/MetPak RG and MetPak Pro Base Stations
Page | 47
Issue 1
Doc. No. 1723-PS-0023
October 2018
ARG100 Rain Gauge Baseplate Mounting (Baseplate supplied)
Due to the low weight of the rain gauge (1kg approximately) it must be mounted securely, the use
of the Baseplate is recommended for this. However the gauge may be mounted via the three holes
in the base to a paving slab for example. It is suggested that rawlbolts are used for this purpose as
they provide a means of levelling the rain gauge.
Unscrew the 3 upper nylon thumb nuts and remove all the nylon spacers from the studs.
Lift off the tipping bucket base assembly to leave the metal baseplate and studs.
Fix the baseplate to level ground using the 4 pegs provided through the 4 corner holes. The
baseplate may be mounted to hard surfaces like concrete by replacing the 4 supplied pegs with
screws and rawlplugs.
For temporary mounting on hard surfaces use some bricks or heavy weights on the four corners of
the baseplate (the height of the weights should be kept as low as possible to cause the minimum
interference with the aerodynamics of the rain gauge).
Refit the tipping bucket base assembly.
Refit the nylon spacers over the 3 studs.
Loosely screw on the 3 nylon thumb nuts.
Leveling the Base Assembly
Upon completion of the above adjust the 3 leveling thumb nuts under the tipping bucket to align
the spirit level bubble to within the centre circle.
Now tighten the upper 3 thumb nuts ensuring that the spirit level bubble remains within the centre
circle.
NOTES:
Ensure that the Foam insert under the tipping bucket is removed before re-fitting the funnel.
No two rain gauge designs are ever likely to produce identical results, and identical rain gauge can
give slightly different catches even when sited close to each other.
Customers with 2 or more sets of equipment must not swap around rain gauges with Base
Stations without using MetSet to change the calibration figure.
Nylon Spacers
Spirit Level
Corner Hole
Upper Nylon
Thumb Nut
Tipping Bucket
