Campbell CS705, Product Manual

Page: 6 / 27

1. Introduction
The CS705 Snowfall Adapter converts a TE525WS Texas Electronics Rain Ga
u
ge to a rain and
snow ga
u
ge. It consists of an antifreeze reservoir, overflow tube, and catch tube. Snow captured
in the catch tube dissolves into the antifreeze raising the overall level. The mixture flows through
the overflow tube into the tipping bucket where it is measured. A slot in the top of the overflow
tube prevents the tube from developing a siphon.
2. Precautions
l
READ AND UNDERSTAND the Safety section at the
front
of this manual.
l
The CS705 possesses inherent delays and is not suitable for real-time precipitation
measurements (see Overview (p. 2)).
l
Since regular maintenance is required, choose a site that is easily accessible throughout the
winter.
l
Wear safety glasses and rubber or neoprene gloves while handling and pouring antifreeze.
l
Campbell Scientific strongly recommends using antifreeze consisting of a 1:1 mixture of
propylene glycol and ethanol (PGE). MSDS for Campbell Scientific CS705 antifreeze (p. 15)
provides MSDS information for the PGE antifreeze offered by Campbell Scientific.
l
Avoid using the antifreeze commonly used in cars or RVs. This antifreeze, which consists of
propylene glycol or ethylene glycol, increases the likelihood of ice bridging (see Antifreeze
(p. 2)).
l
The antifreeze/snowfall mixture needs to be captured from the tipping bucket ga
u
ge and
properly disposed of in accordance with local, state, and federal regulations.
l
The CS705 should be removed and cleaned in the summer, and reinstalled before the
winter season.
CS705 Snowfall Adapter 1