Campbell 27106T, Инструкция по эксплуатации

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27106T Vertical Propeller Anemometer
5
Operating Temperature:
Propeller Description:
Dimensions
Overall Length:
Propeller Diameter:
Housing Diameter:
–50 to 50 °C
4-blade helicoids propeller mo
u
lded
of carbon fib re thermoplastic
43 cm (17 in)
20 cm (8 in)
2.5 cm (1 in)
1180 Mounting Pipe Description: 12-in. long, 3/4-in. IPS schedule 40 pipe
(1.05 in. OD)
Weight: 0.5 kg (1.2 lb)
1 Threshold and Distant Constant values are for axial flows.
7. Installation
If you are programming your datalogger with Short Cut , skip Section 7.3 ,
Wiring
(p. 7)
, and Section 7.4 ,
Programming
(p. 8)
.
Short Cut
does this work for
you. See Section 4 , QuickStart
(p. 2)
, for a Short Cut tutorial.
7.1 Siting
The 27106T should be oriented with the propeller facing the predominant flow
of air being measured. No obstacle should interfere with the vertical air flow
from either the up or down direction.
The propeller responds only to the component of the air flow, which is parallel
to the axis of its rotation. Off-axis response closely approximates a cosine
curve with appropriate polarity. With perpendicular air flow, the propeller does
not rotate.
7.2 Assembly and Mounting
Tools Required:
•
1/2-inch open-end wrench for the CM220 Right-Angle Mount or 5/32-
inch Allen wrench for the
#
1049 NU-RAIL fitting
• UV resistant cable ties
•
small pair of diagonal-cutting pliers
•
6-inch to 10-inch torpedo level
Mount the 27106T to a tripod or tower using the tools listed above:
1. Mount a Campbell Scientific crossarm to a tripod or tower.
2. Remove the nut that is on the top of the propeller shaft (FIGURE 7-1 or
FIGURE 7-2 ).
3. Place the propeller on top of the propeller shaft. Replace the nut and
tighten to secure the propeller to the shaft (FIGURE 7-1 or FIGURE 7-2 ).