Wind Speed Smart Sensor (S-WSB-M003) Manual
Mounting
Placement and Mounting Considerations
•
The wind speed smart sensor should be mounted
vertically in a location free of wind shadows.
•
For accurate wind speed measurements, mount the
sensor at a distance of at least five times the height of the
nearest tree, building, or other obstruction.
•
Be sure to secure the sensor cable with cable ties to
protect the cable from damage.
•
To provide long-term protection from moisture entry, the
smart sensor adapter must be mounted horizontally and
with the cable wires routed with drip loops so that water
drains away from the cable entry point as shown in the
example below. When mounted properly, the housing is
weatherproof (but not waterproof).
•
The tripod or mounting mast must be properly grounded.
For field installations, you can use Onset’s grounding kit
(M-GKA).
•
Secure the mast the wind sensor is mounted on so that it
does not vibrate. If you are using Onset masts or tripods,
secure them with guy wires.
•
Although the wind sensor is designed to operate in 100+
mph winds, it can be damaged with improper handling.
Store the sensor in its shipping box until you are ready to
install it.
•
Refer to the Tripod Setup Guide for more information.
Mounting the Sensor to a Tripod Cross Arm
1.
Insert a 1/4-20 x 1-3/4 inch hex head bolt with a flat washer
on it through the 1/4 inch hole on the end of the cross arm.
Tighten with a 7/16 inch wrench until snug.
2.
Install another flat washer and nylock nut on the bolt,
allowing the black mounting rod to protrude 1/2 inch (1.3
cm) from the bottom of the cross arm.
3.
Insert the sensor mounting rod into the cross arm. Secure
the ground wire to the lug nut on the cross arm.
4.
Tighten the nut and bolt until the rod is clamped in place.
5.
Adjust the height of the sensor in the cross arm as
necessary using one of the following methods and then
tighten the nut and bolt until the cross arm just starts to
deform.
a.
Loosen the tri-clamp bolts and raise or lower the entire
mast so that the wind sensor is close to the desired
height. Make sure there is at least 5 cm (2 inches) of
mast extending below the lower tri-clamp.
b.
Make sure the upper mast dimple is still facing north (if
in northern hemisphere) and then re-tighten the tri-
clamps. Once the tri-clamp bolts are tight, tighten the
lock nuts to lock the bolts in place. This requires two
wrenches: one to hold the bolt and one to tighten the
lock nut against the tri-clamp.
c.
Loosen the bolt holding the wind sensor mounting rod
and raise or lower it as necessary so the center of the
wind sensor anemometer cups is at the desired height.
Re-tighten the bolt.
6.
Use cable ties to secure the sensor cables to the cross arm,
bracket, and mast. The sensor cables should run below the
cross arm and brackets to minimize the chance of birds
pecking and damaging the cables. Cable ties should be
spaced no more than .3 m (1 foot) apart. Make sure there
are drip loops on both sides of the smart sensor housing,
which must also be mounted horizontally, as described
under
Placement and Mounting Considerations
.
Mounting the Sensor to a Pole
1.
Loosely secure the sensor mounting pole with two hose
clamps (not included) as shown below. Adjust the height of
the sensor as necessary, but make sure the hose clamps are
separated by at least 4 inches (10 cm).
2.
Secure the sensor cable with cable ties. See diagram on next
page. Make sure there are drip loops on both sides of the
smart sensor housing, which must also be mounted
horizontally, as described under
Placement and Mounting
Considerations
.
Drip loop
Drip
loop
Smart
sensor
adapter
mounted
horizontally
Sensor cable
Upper
mast
Mounting rod
Cable ties
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