Spectrum Technologies WatchDog 3305ADD User manual

Digital Anemometer
PRODUCT MANUAL
Item # 3305ADD

2
CONTENTS
Specifications 2
Components/Hardware 3
Tools and Materials Needed 4
Attaching the Wind Cups 4
Choosing the Best Anemometer Location 5
Orienting the Anemometer Arm 5
Installing the Anemometer 6
Installing the Wind Vane 8
Configuring the Pups to Use the Digital
Anemometer
9
Direction Calibration 10
Troubleshooting 11
Warranty Back
This manual will familiarize you with the features and
operation of your new Digital Anemometer. Please read this
manual thoroughly before using your instrument.
Wind Direction
Range 0 to 359°
Resolution 1°
Accuracy ± 3°
Wind Speed
Range 0, 1 to 200 mph (0, 1 to 322 km/h)
Accuracy ± 2 mph (± 3 km/h), ± 5%
Specifications

3
Components
The anemometer includes the components listed below. Be sure you
have all listed components before continuing. Assess your installation
and make sure you have all necessary parts, tools, and materials pic-
tured below before you begin.
Hardware
The hardware kit contains the items most commonly needed for the
installation of the anemometer. Which items you use from the kit de-
pend on where you install your unit. You may need to adapt or pur-
chase additional hardware to fit your individual requirements.

4
Assembling the Anemometer
Attach the wind cups to the anemometer and check the mounting base
orientation before you install it.
Attaching the Wind Cups
Before installing the anemometer, attach the wind cups. Wait until
you have installed the anemometer before you attach the wind vane.
1. Push the wind cups onto the smaller of the two stainless steel
shafts.
2. Slide the wind cups as far up the shaft as possible.
3. Use the allen wrench provided to tighten the set screw on the
side of the wind cups.
4. Spin the wind cups. If they do not spin freely, loosen the set
screw, lower the cups slightly, then retighten the set screw.
5. Repeat Step 4 until the wind cups spin freely.
Tools and Materials Needed
In order to confirm the anemometer is reading accurately, you will
need access to the SpecConnect Web Portal or a computer on which
the Retriever and Pup Launch Utility (RPLU) has been installed.
You will also need the following tools and materials to install your
anemometer:
• Cable Clips or Weather-Resistant Cable Ties
• Stainless Steel Hose Clamps
• Small Screwdrivers
• Adjustable Wrench
• Hand-Held Compass or Local Area Map

5
Choosing the Best Anemometer Location
Use the following guidelines to determine the best location for your
anemometer.
• Install the anemometer in a location where wind flow is unob-
structed by trees and nearby buildings.
• For the most accurate readings, the anemometer should be mount-
ed at least 4 feet (1.2 m) above the roof line.
• You may do this by mounting the anemometer on a television
antenna mast, wooden post, or metal pipe.
• Make sure the antenna mast or metal pipe is properly grounded.
You may want to use Davis’ Grounding Kit.
• If you are not certain about how to ground your installation, con-
sult a qualified professional for national and local codes.
Orienting the Anemometer Arm
The wind vane rotates 360° to measure current wind directions. To
obtain accurate readings, the vane must be correctly oriented when
mounting the anemometer. By default, the wind vane considers direc-
tion of the anemometer arm to be true north.
To ensure correct orientation of the wind vane, mount the anemome-
ter so that the arm points to true north. If it is not possible or practical
to mount the arm in this manner, direction to north can be adjusted.
See Direction Calibration (p. 10) for details.

6
Installing the Base on a Wooden Post or Surface
1. Hold the anemometer base against the wood surface and use a
pencil to mark the location of the four holes on the base.
2. Use a drill with a 3/16" (5-mm) drill bit to make pilot holes in
these locations.
3. Drive the lag screws through the holes in the anemometer base
and into the wood.
Installing the Anemometer
Note: Only 3 digital anemometers can be connected to a
WatchDog Sensor Pup.
Check the Anemometer Base Orientation
Decide which way to orient the base before installing it.
1. Insert the anemometer arm into the base.
2. Attempt to push the #4-40 x 1 1/4" pan head screw through the
holes in the arm and the base.
3.If the screw does not slide easily through the holes, rotate the
base 180° to line up the opposite holes and try again.

7
Attaching Arm to Base
1. Insert the anemometer
arm into the anemome-
ter base. Guide the ane-
mometer cable through
the slot as you insert the
arm.
2. Insert the pan head
screw into one of the
holes in the base and
slide it through the arm.
3. Secure the pan head
screw using the flat
washer, lock washer,
and hex nut as shown.
Installing on Antenna Mast or Metal Pipe
Use the supplied U-bolts to mount on an antenna mast or pipe with an
outside diameter between 1 1/4" and 1 3/4" (32 to 33 mm).
To mount on a smaller pole, obtain a U-bolt that fits the base open-
ings but that has a shorter threaded section.

8
Installing the wind vane
1. Slide the wind vane down onto the shaft as far as it will go.
(Because of the shape of the shaft, the vane will only go on one way.)
2. Use the allen wrench provided to tighten the set screw on the side
of the wind vane.
Testing the Anemometer Assembly
The values measured by the anemometer can be seen by observing
the latest station update in SpecConnect or by downloading the flash
drive from the Retriever to the Retriever and Pup Launch Utility
(RPLU). Because of the measurement interval used by the Pup, allow
approximately 15 seconds for the reading to stabilize after adjusting
the wind cups or vane.
1. Using the compass or map as a guide, point the wind vane in any
direction. Confirm the Sensor Pup logs the correct wind direction.
2. Spin the wind cups to make sure you get a wind speed reading.
Readjust the cups if necessary.
After successfully testing the anemometer, secure the sensor cable to
the metal mast or pipe with electrical tape or zip ties.

9
Configuring the Pup to Use the Digital Anemometer
The Sensor Pup must have one of its available ports configured for
wind to use the Digital Anemometer. Both the Retriever and Pup must
be running firmware version 01.04.XX or higher to use the Digital
Anemometer. The Anemometer can be used on any port on the Pup.
When configured for wind, the Pup supplies three data points:
1. Wind Direction (in 1 degree increments)
2. Wind Gust (highest measured wind speed during the log interval)
3. Average Wind Speed (averaged over the log interval)
Configuration using RPLU
Configuration using SpecConnect
When the anemometer is selected in the Retriever & Pups Launch
Utility (RPLU), the three parameters above are automatically set and
no additional channels may be configured for that port. In Spec-
Connect, the parameters also may not be changed from the set chan-
nels and the corresponding channels must be turned On for each pa-
rameter to be reported.

10
Direction Calibration
If it is not possible to point the anemometer arm toward true north,
the following procedure allows you to reprogram the sensor so wind
direction will be accurate.
1. Ensure the unit is plugged into the Sensor Pup and the Pup has
been already configured for the anemometer in the port being used.
2. Obtain a strong magnet, such as those used on refrigerators. Flat,
flexible business-card types are not useable; hard, disk-type magnets
(such as rare-earth magnets) are preferred.
3. Align the wind vane such that tip points toward the north. A com-
pass or map reference should be used to ensure accurate direction.
4. With the wind vane held in the correct direction, hold the magnet
over the center of the black bulge in the wire just below where the
cable plugs into the Pup. See image below for proper placement.
5. The LED on the cable will light up red when the magnet is in the
proper location.
6. Keep the magnet in place for about 5 seconds or until the LED
flashes. The new north direction has been set and the magnet should
be removed and the wind vane released.

11
Troubleshooting
While your anemometer is designed to provide years of trouble-free
operation, occasionally problems may arise. If you are having a prob-
lem with your unit, please check the following troubleshooting proce-
dures before sending the unit in for repair. You will be able to solve
many of the problems yourself. If, after checking these procedures
you are unable to solve the problem, please call Spectrum Technical
Support for further instructions.
Wind speed constantly or intermittently reads 0.
• Make sure anemometer is fully plugged into jack on Sensor Pup.
• Check for broken wire along length of anemometer cable. Care-
fully check areas where the cable has been secured.
• If you still do not get a reading, the problem is with the anemom-
eter.
Wind speed reading seems too high, too low, or is dashed
out.
• Check installation by spinning wind cups. If the wind cups spin
freely and the Sensor Pup logs a wind speed, the wind cups are
installed correctly. If the wind cups don’t spin freely, then try drop-
ping the wind cups approximately 1/16" to 1/8" (1.5 to 3 mm). Use
the included Allen wrench to loosen and retighten the wind cup
assembly .
• Check for any obstructions blocking the wind near the anemome-
ter.
• A WatchDog Sensor Pup can only accommodate 3 digital ane-
mometers. If you have connected 4, this will lead to inaccurate
readings.
Maintenance
Your anemometer does not require any regular maintenance.
CAUTION:
DO NOT attempt to lubricate the wind cup shaft and bearings or the
wind vane shaft. Natural or synthetic lubricants will inhibit the normal
operation of the anemometer.

Warranty
This product is warranted to be free from defects in material or work-
manship for one year from the date of purchase. During the warranty
period Spectrum will, at its option, either repair or replace products that
prove to be defective. This warranty does not cover damage due to
improper installation or use, lightning, negligence, accident, or unau-
thorized modifications, or to incidental or consequential damages be-
yond the Spectrum product. Before returning a failed unit, you must
obtain a Returned Materials Authorization (RMA) from Spec-
trum. Spectrum is not responsible for any package that is returned
without a valid RMA number or for the loss of the package by any ship-
ping company.
3600 Thayer Court
Aurora, IL 60504
[phone] or [phone]
Fax [phone]
E-Mail: [email protected]
www.specmeters.com
Rev. 02/2020