Hobo S-WCG-M003 Manual Download Page 4

Ultrasonic Wind Speed and Direction Smart Sensor (S-WCG-M003) Manual 

1-800-LOGGERS 4 

www.onsetcomp.com

 

5.

 

Raise the sensor to the desired height on the mast. 

6.

 

Use the wrench to tighten the hex nuts until the sensor is 
firmly fastened on the mast. Do not overtighten the hex 
nuts. 

7.

 

Follow the steps in 

North Alignment

 to make sure the 

sensor is pointed to true north. 

Mounting on a Tripod Cross Arm 

Follow these instructions for mounting the sensor on a cross 
arm. 

1.

 

Attach the cross arm to the mast before installing the 
sensor. 

2.

 

Connect the battery if you haven’t already done so (see 

Connecting the Sensor Battery

). 

3.

 

Use a 10 mm wrench to install two hex nuts at the base of 
the threaded end of the U-bolts as shown. Tighten the hex 
nuts all the way down to the end of the threads. Repeat 
with the other U-bolt. 

 

4.

 

Insert the threaded bolt end through the hole in the bracket 
so that the bracket rests on top of the hex nut with the flat 
end facing out. Place a spacer on top of the bracket as 
shown below. Repeat for the other threaded bolt end and 
for both ends of the other U-bolt.  

 

5.

 

Insert both bolt assemblies through the bottom of the 
mounting base and secure with finger-tightened lock nuts. 

 

6.

 

Slide the assembly above over the end of the cross arm as 
shown below. Make sure the hole in the cross arm is 
centered on the sensor mounting base as shown. 

 

7.

 

Make sure the cross arm is flush against the top spacer. The 
spacer and threaded bolts should be flush against the top of 
the bracket holes. Tighten the locknuts with a wrench. Do 
not overtighten them. 

 

Inserted cross arm 

Hole in 
cross arm 
must be 
positioned 
as shown 

U-bolt assemblies inserted 
through holes on mounting 
base on sensor rod

Area where cross arm will 
be inserted in next step 

Spacers flush 
against top of 
holes 

Finger-
tighten 
these 
lock 
nuts  

Hex nuts installed at bottom 
of threaded end of bolts 

Bracket on top of hex nut, 
flat side facing out 

Spacer on bracket 

Cross arm 
flush against 
top spacer 

Spacer and 
threaded bolts 
at top of 
bracket holes 

Summary of Contents for S-WCG-M003

Page 1: ...ion Unit vector averaging used vector components for each wind measurement are calculated every three seconds for duration of logging interval see Measurement Operation Operating Temperature Range Wit...

Page 2: ...e bottom of the sensor base Loosely tighten the four screws to keep the sensor rod in place Once these steps are complete mount the sensor using the guidelines in the next section Mounting Mounting Gu...

Page 3: ...t sensor adapters can be stacked as shown in the example below on the right Alternatively mount the smart sensor adapter to a flat surface using two screws no larger than a 6 and two washers as shown...

Page 4: ...f the hex nut with the flat end facing out Place a spacer on top of the bracket as shown below Repeat for the other threaded bolt end and for both ends of the other U bolt 5 Insert both bolt assemblie...

Page 5: ...g your GPS or a magnetic compass go to a point that is directly north of the station and at least 100 m 328 ft away from the station To determine this point move until the station is directly south of...

Page 6: ...inaccurate results For example three measurements of 350 11 and 12 degrees which are all winds from the north averaged together would result in 126 degrees which incorrectly indicates a southeasterly...

Page 7: ...od so that you can easily reattach the sensor head 9 Make sure the mark from step 3 is aligned with the north marking and reattach the sensor head Tighten the three screws 10 Connect the battery and i...

Reviews: