Campbell CS705, Instruction Manual

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CS705 Snowfall Adapter
3
4.1 Antifreeze
Campbell Scientific recommends a 1:1 mixture of propylene glycol and ethanol
(PGE). PGE is available from Campbell Scientific in a package of four, one-
gallon containers. Antifreeze can only be shipped in multiples of four gallons
via UPS Ground and cannot be shipped outside of the continental United
States.
4.1.1 Standard Car or RV Antifreeze is NOT Recommended
Standard car or RV antifreeze consists of propylene glycol or ethylene glycol,
which have a specific gravity >1. This allows a layer of water to sit on top of
the antifreeze that may freeze and form an ice cap that prevents snowfall from
being dissolved into the solution. Mixing the antifreeze with ethanol solves the
specific gravity issue and prevents the ice cap. PGE is also more
environmentally friendly.
4.2 Tipping Bucket Compatibility
The CS705 is equipped with a specially sized cylinder that allows it to nest
within the 8-inch orifice of the TE525WS Texas Electronic Rain Gage. The
CS705 cannot be directly used with TE525, TE525MM, CS700, or TB4 rain
gages. However, the TE525 and TE525MM gages can be converted to a
TE525WS at Campbell Scientific. Refer to the Assistance section at the front
of this manual for the steps required to return equipment to Campbell
Scientific.
5. Specifications
Construction:
Black powder coated aluminum
Capacity: 20.32 cm (8 in) of liquid @ –20°C
operating temperature (assuming 1:0
starting ratio of anti-freeze to water).
Recommended Antifreeze: 1:1 mixture of propylene glycol and
ethanol (PGE)
Antifreeze Capacity: ≈ 9.5 L (2.5 gallons)
Catch Tube Height: 25.4 cm (10 in)
Catch Tube Orifice: 21 cm (8.25 in) diameter
Antifreeze Reservoir Height: 36 cm (14 in)
Antifreeze Reservoir Diameter: 21 cm (8.25 in)
Total Weight (CS705 + Antifreeze): ≈ 9 kg (20 lb)