Campbell Scientific CS705 Tipping Bucket Snowfall Adapter - Manual (Page 12)

CS705 Snowfall Adapter
5.2 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.
6. 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)
7. Installation
7.1 Siting
Choose a site that is easily accessible throughout the winter.
The CS705 Snowfall Adapter and associated rain gage should be mounted in a
relatively level spot that is representative of the surrounding area. The lip of
the funnel needs to be horizontal and 76 cm (30 in) above the ground or higher
to prevent burial by snow. The ground cover around the gage should be natural
vegetation or gravel. Avoid mounting the gage over concrete or paved
surfaces.
The under catch of winter precipitation by antifreeze-based gages is directly
related to wind speed. Errors due to wind can be minimized by properly siting
the gage. The preferred gage site is in a natural well protected location. To
ensure proper catch, an angle of 30° to 45° from a vertical line drawn through
the center of the gage orifice to the surrounding obstructions should be
maintained. FIGURE 7-1 illustrates the proper siting of a gage.
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