Weather Station Hardware > Davis Instruments Weather Stations

Tipping spoon (new type) - adjusting

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Fifth Horseman:
This is a quick guide to the new tipping spoon assembly for the VP2.  I've started this as a separate thread so as to make the information easy to find.
Firstly this is not a "how-to" for calibrating a rain gauge, merely how to adjust the spoon especially as it seems Davis think you can't do it.

The spoon assembly is essentially a larger version of the one used in the Vantage Vue ISS

The spoon assembly
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The reed switch - sealed unlike the old type but with the same pin-out
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The magnet and adjusting screw, the closer the screw end is to the magnet the more water it takes to tip the spoon
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Remove this screw and the spoon mechanism comes away from the base
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The adjustment screw on the underside of the mechanism, turn anti-clockwise to reduce the amount of water before the spoon tips (increase rainfall sensitivity) and clockwise for the reverse.
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Mattk:
The design then does defy basic calibration logic in having to pull the mechanism apart, make adjustment, then put it back together again, retest, pull apart again etc etc

mikeym2m:
I made the adjustment without removing the spoon.

Cheers

  :-)

MikeyM

dasman:
is the adjustment from the top or the bottom?

Fifth Horseman:
The head of the bolt is accessed from the underside (after removing the baseplate), however if you are able to grip the exposed thread and not damage it the adjustment  could be made from above.

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