WeatherHawk Signature Series User manual

Signature Series User’s Manual

Table of Contents
Overview 1
Sensor Specifications 1
Site Considerations 2
Site Selection 2
Ground Installations 2
Roof Installations 3
Power Considerations 4
Solar Power 4
AC Power 4
Communication Considerations 4
Direct Communication 4
Cable Length 5
Grounding Issues 5
Wireless Communication 5
Transmission Range 5
Line-of-Sight 5
Other Communication Options 6
Pre-Installation Tests 6
Installation Procedures 7
Procedure 1: TP1 Tripod Installation Procedures 7
Procedure 1a: Tripod Preparation for Installation 7
Procedure 1b: Ground Installations 8
Procedure 1c: Flat Roof Installations 9
Procedure 1d: Peaked Roof Installations 10
Procedure 2: TP1-GK Guy-Wire Kit Installation 11
Procedure 3: Mounting a WeatherHawk Station on a Tripod or Pole 12
Procedure 4: Solar Panel Installation 15
Procedure 5: TP1-GR Ground Kit Installation 15
Appendix A: WeatherHawk Equipment
Communications Options
USB-AD Serial-to-USB Adapter
RS485-KT Communications Module Kit
Power Supplies
SP2-KT 5 W Solar Panel Kit
ACP2 AC Converter
Mounting/Installation Kits
TP1 Tripod/Mast Assembly
TP1-TK Tripod Installation Kit
TP1-SK Tripod Stake Kit

TP1-MX Tripod Mast Extension
TP1-GK Tripod Guy-wire Kit
TP1-GR Tripod Grounding Kit
HM Series (House Mount) Mast Components
Appendix B: WeatherHawk Setup Diagrams
Direct Connect Diagram
Wireless Connect Diagram
Roof/Wall Installation Diagram
Appendix C: WeatherHawk Setup Special Notes
Pyranometer Shipping Cap Removal Note
Appendix D: Preventive Maintenance Procedures

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Overview
The WeatherHawk Signature Series weather station is a meteorological platform designed to measure a standard set
of meteorological variables. The variables measured by the WeatherHawk Signature Series include: air
temperature, relative humidity, solar radiation, precipitation, barometric pressure, and wind speed and direction.
This weather station is designed for ease of use while providing reliable, long-term measurements. No special skills
or special tools are needed to install and maintain a WeatherHawk system therefore providing a wide range of
applications a WeatherHawk system can be used for.
All instruments on the WeatherHawk are manufactured to published standards and require no user calibration.
However, over time sensor accuracy will degrade and sensors will need replacement. For this reason all sensors on
the WeatherHawk are easily replaceable by the user therefore making it unnecessary to send the platform to the
factory for sensor replacement. User replaceable parts also cut down on shipping costs, and minimize data gaps in
long term measurements.
Sensor Specifications
Table 1 below gives the accuracy of each sensor used in a WeatherHawk Signature Series weather station.
Air Temperature
Type
10K Thermistor
Operating Range
-40 to 65° C (-40 to 150° F)
Sensor Accuracy
+/- 0.5°C (+/- 0.9° F)
In-system accuracy
+/- 1° C (+/- 1.8° F)
Relative Humidity
Type
Precision bulk-polymer device
Operating Range
0-100%
Accuracy
+/- 3% (@25°C, 10-90%)
+/- 5% (@25°C, 90-100%)
Barometric Pressure
Type
Motorola MAP sensor
Operating Range
15-115 kPa
Accuracy
Within 1.5%
Wind Speed
Type
3-Cup anemometer
Operating Range
0.78-98 m/s (1.75-214 mph)
Starting Threshold
0.78 m/s (1.75 mph)
Wind Direction
Type
Vane
Operating Range
360° mechanical, 352° electrical
Sensitivity
1 m/s (2.2 mph)
Rainfall
Type
Tipping Spoon
Resolution
1 mm (0.04”) per tip
Solar Radiation
Type
Silicon Pyranometer
Range
0-2000 W/m^2
Accuracy
+/- 5%
Table 1: Instrument Specifications

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Site Considerations
Certain aspects should be considered when choosing the best location to place a WeatherHawk system. To ensure
the absolute best measurement, a weather station should be placed far away from any natural or artificial structure
that could affect the measurement such as trees, buildings, artificial surfaces, steep slopes, etc. At times this is not
possible, not practical, or not consistent with the application and decisions must be made as to the best location to
place a weather station. The following sections will briefly discuss some considerations that should be made prior to
installing a WeatherHawk station.
Site Selection
Ground Installations
For ground installations, WeatherHawk recommends a TP1 Tripod Kit. However, the signature series weather
station will mount on any tubing with an outer diameter of 1-1.5 inches and can be easily mounted on a user-
supplied mast. With the TP1 Tripod Kit, the WeatherHawk can be mounted at a height of 38 to 60 inches. Mast
extensions are available for the TP1 Tripod Kit in order to raise the height of the weather station. Guy-wire kits are
also available for use with the TP1 Tripod Kit to enhance the stability of the mast. Other equipment for the TP1
Tripod Kit available from WeatherHawk includes a tripod installation kit, tripod stake kit, and a tripod grounding
kit. The specific contents of all kits can be found in Appendix (A). Maximum station height with the tripod and
accessories is 10 feet (3 meters).
The ideal WeatherHawk site is level and well away from obstructions such as buildings, trees, and steep slopes. If
obstructions exist, use the “Ten Times the Height Rule”, which is illustrated in Figure 1.
An option when obstructions exist is to raise the weather station height above the obstruction by using mast
extensions or mounting the WeatherHawk on a roof.
Figure 1: Ten Times the Height Rule. If
the height of the tree, T, is 13 feet and the
height of the shed, H, is 12 feet, then the
WeatherHawk station should be placed at
least 130 feet from the tree and at least
120 feet from the shed.

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a. If the WeatherHawk station will be inside a fence to discourage vandalism, the fence top edge must be
lower than the wind sensors even if the fence is chain-link
b. Accurate wind measurements require the WeatherHawk to be located at the highest point in a
particular region.
c. The TP1 tripod/mast height cannot exceed 10 feet (312 cm), and you must use a guy-wire kit if you
increase the mast to the maximum height. If you need a higher mounting structure contact
WeatherHawk for recommendations.
Roof Installations
For roof mounts, WeatherHawk recommends either the TP1 Tripod Kit, Non-penetrating mast mount, or the HM3
Low Profile Mast Assembly. The HM3 is suitable for rooftop and well supported fascia board installations.
WeatherHawk also offers mast extensions for the HM1 to increase the height of the sensor platform.
The WeatherHawk needs to be 4 -8 feet (1.25 –2.5 m) above the roof peak, which requires one or two extensions
(TP1-MX) and a guy-wire kit (TP1-GK) when using the TP1 tripod and two extensions. If your roof has a chimney
or is flat with decorative trim, or has nearby trees taller than the house, follow the “Ten Times the Height Rule”
described in Figure 1.
If a WeatherHawk is installed on a roof, heat reflected and radiated by the building tends to influence
temperature and relative humidity readings of the station.
Do not install your WeatherHawk near a functional chimney. When the chimney is in use, the carbon
particles in the soot may degrade and damage the bearings in the sensors. The heat may also affect the
air temperature and relative humidity measurements.
Do not install your WeatherHawk on a mast or tripod with a television antenna because the additional
wind loading from the WeatherHawk may cause the antenna mast to fail and topple.
Because of electrical isolation and earth ground requirements, WeatherHawk recommends that a
qualified electrician install and ground a directly connected roof mounted weather station. Your
WeatherHawk Warranty is void if the weather station is not properly grounded.

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Power Considerations
WeatherHawk weather stations are provided with an integral sealed rechargeable lead acid battery that must be
recharged to assure continued system operation. The battery supplied with the WeatherHawk is a 0.8 AHr battery
which will operate the station for approximately 3-4 days without any external charging. WeatherHawk also offers
a 7 AHr external battery pack for use in higher latitudes and colder climates. To charge the internal or external
battery, WeatherHawk offers a solar panel option or an AC/DC converter option. If no power supply has been
ordered with the weather station, the user must provide an external DC power source with an output of 18 Volts @
1.2 amps.
Connecting an incompatible power source to your WeatherHawk voids your Warranty. Please check
with WeatherHawk Customer Service before connecting a power source not purchased from
WeatherHawk.
Solar Power
WeatherHawk offers a 5 Watt Solar Panel Kit for use with WeatherHawk Signature Series systems. The kit is
suitable for use with any WeatherHawk Signature Series weather station however, if the station location is near or
above 66° latitude, solar power is most likely not an option for recharging the internal battery of the weather station.
Locations near or above 66° latitude do not receive enough sunlight in the winter months to effectively charge the
internal battery using a solar panel. For these high latitude applications, the external 7 AHr battery is recommended.
AC Power
WeatherHawk offers an AC/DC Converter for use in recharging the battery using an AC power source. The ACP2
recharges the WeatherHawk battery by converting 110-220 VAC, 50/60 Hz power to 18 VDC. The ACP2 requires
the weather station to be located within close proximity to a source of AC power. The ACP2 must be installed in a
non-condensing environment or a weatherproof enclosure. The ACP2 is compatible with all WeatherHawk
Signature Series weather stations.
Communications Options
Direct Communications
Direct Communications with a WeatherHawk Signature Series weather station involves using an RS232 cable to
directly connect the WeatherHawk to a host computer. To do this, the WeatherHawk must be located close enough
to the host computer for a direct connection to be made. When using direct connection communications, it is very
highly recommended that an isolation kit be used to protect the host computer in the event of a lightning strike or
other electrical surge.

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Cable Lengths
The maximum cable length for RS232 communications is 75 feet. If a user requires a longer cable length than this,
an MD485-KT Communications Module Kit can be used. The MD485-KT Communications Module Kit enables
the distance of direct communications to be lengthened to approximately 4000 feet of cable. However, if multiple
WeatherHawk stations are used as in a network, the total combined cable length cannot exceed 4000 feet.
Grounding Issues
Outdoor cables may be subject to induced currents due to lightning or other environmental factors. Therefore proper
grounding is imperative to avoid damage to the WeatherHawk and/or any connected host device or computer.
To minimize the possibility of equipment damage or personal hazard, we strongly recommend a
qualified electrician design and install the grounding and data isolation components of a directly wired
installation.
Wireless Communications
WeatherHawk wireless stations use spread-spectrum radios to transmit the data over short distances. These radios
must have line-of-sight between the station and the radio base station connected to a host computer to operate
effectively. WeatherHawk wireless stations are available in three frequency ranges: 916 MHz, 922 MHz, and 2.4
GHz. Higher gain antennas are also available to increase the transmission distance of the data.
Transmission Ranges
Typical line-of-sight transmission ranges are listed below:
Up to ½ mile (0.8 km) for the frequencies 916 MHz and 922 MHz
Up to ¼ mile (0.4 km) for the frequency 2.4 GHz
Up to 7 miles if optional higher gain antennas are used on both the WeatherHawk station and the RF base
station
The transmission ranges assume standard WeatherHawk antennas are used at the computer site. User-
supplied, higher gain antennas at the base station and/or on the WeatherHawk can affect the
transmission range.
The ranges assume no obstructions are in the line-of-sight.
Line-of-Sight
Line-of-sight is defined as a straight path between a transmitting and receiving antenna that is unobstructed by
intermediate topography or obstructions (see Figure 2). A clear line-of-sight is required to achieve the optimum
transmission range. Since the effect of obstructions on transmission range can vary, radio transmission tests should
be performed before permanently installing a WeatherHawk station if obstructions lie within the line-of-sight.

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Figure 2: Line-of-sight. As the dotted line indicates, Station 1 has a clear line-of-sight with the Computer Site. The
mountain obstructs Station 2's line-of-sight and would attenuate the RF signal or prevent wireless communications
completely
Other Communication Options
WeatherHawk Signature Series weather stations can use other communications options if the application requires it.
Other options include an IP server module that can send the data to an Ethernet making it accessible on a network.
This option requires the purchase of a WeatherHawk IP server module, and the presence of an ethernet cable at the
module location. Cellular communications can also be used to send the data from a location that is not within radio
transmission range of the host computer. This option requires the purchase of a cellular modem, and cellular
coverage at the site location. Another option is the use of satellite communication. This option requires purchasing
the necessary hardware and a clear sky view from the station.
Pre-Installation Tests
Upon receiving a WeatherHawk weather station, it is a good idea to run some communication and software tests to
ensure the system is working properly before permanently installing the station in the field. In order to test the
system, the host computer will need an available serial port or a USB port with a serial-to-USB converter. A serial-
to-USB converter is available for purchase from WeatherHawk if necessary. Refer to the Quick Start Guide for pre-
installation tests.
Station 1
Station 2

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Figure 1: Box of standard and
wireless equipment. The lift straps
allow easy removal of the
WeatherHawk from the box.
Lift Straps
Quick Start Guide
Signature Series Model 232/916/922/240
Read Me First
Computer Requirements
Available Serial Port or USB Port (Serial-to-USB Converter
Cable required)
WeatherHawk Setup Procedure
1. Remove the top foam packing from the WeatherHawk box and
verify you have all ordered equipment; then unpack equipment.
a. Use the lift straps to remove the WeatherHawk
station, since removing the station by lifting on the
sensors may damage the sensors (see Figure 1).
b. Avoid resting the WeatherHawk on the wind speed
and wind direction sensors.
c. Report missing or damaged equipment to
WeatherHawk Customer Service before installing
your system.
2. Install your application software on your computer.
3. Connect the serial cable male connector to the WeatherHawk RS-232 port and the serial cable female
connector to a computer serial port (Figure 2).
a. If you are using a serial connection, ensure the serial port is not already assigned to an open program.
b. If you’re connecting the cable to a USB port, a serial-to-USB converter cable is required and
optionally available from WeatherHawk (P/N 16878, USB-AD).
4. Turn the key to the on position (Figure 3), and observe a red flashing light through the small rectangular
Scan/Receive window on the underside of the WeatherHawk.
Figure 2: Serial cable (left) and the
WeatherHawk serial port in which the serial
cable male connector connects. A dust cover
must be removed from the WeatherHawk
RS-232 port before connecting the cable.
Figure 3: Keyed power switch
is located on the bottom of the
WeatherHawk station.

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5. Start application software and monitor the sensor displays. Within a couple of minutes, numerical values
should appear confirming that the WeatherHawk is functioning. The lights labeled Scan/Receive on the underside
of the station should also blink every ten seconds.
If the WeatherHawk does not function properly, contact WeatherHawk Customer Service to solve the
problem before continuing to the next steps.
6. Using your PC and weather station software, enter the setup parameters for the station. If you are using
WeatherHawk PRO software, see the section in this document labeled “Station Setup usingWeatherHawk
Pro Software”. If you are using other software, please refer to the software manual for that software.
7. Disconnect the serial cable from the WeatherHawk and place the dust cover back on the serial port.
8. If your WeatherHawk is wireless (Model 916/922/240), setup the radio (see “Radio Setup” section below).
9. Install the WeatherHawk weather station at the site. Refer to the Installation Guide provided on the CD
shipped with your station for siting information and installation procedures.
Station Setup Using WeatherHawk PRO Software
1. Click on the This Station menu and choose Setup from the drop down menu (Figure 4a and 4b).
2. Select Direct Connection from the setup screen and select the Serial Port on your computer which the
serial cable is connected to. (Figure 5). If necessary, click the Change button next to the Serial PortI to
select a different port.
Figure 4a
Figure 4b

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3. Test the connection to the WeatherHawk by clicking the Test Connection button on the Setup screen.
4. Select Station Internal Saved Values from the list of Setups on the left of the setup screen. (See figure 6)
5. Enter the desired logging interval in minutes (Figure 6).
6. Enter the station Longitude and Latitude in decimal degrees. Enter station altitude in meters. (Figure 6).
Longitude, Latitude, and Altitude can be determined with a GPS Receiver, a good topographical map, or
found from an online source.
Figure 5: Select the correct Serial
Port that is being used to
communicate with the
WeatherHawk.
Figure 6: Station Internal
Saved Values Setup Screen

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The latitude and longitude must be entered as decimal degrees. If latitude and longitude are obtained in
degrees-minutes-seconds, they must be converted. To convert the values todecimal, ignore the seconds,
divide the minutes by 60, then add that value to the degrees.
Example:
Latitude is 41 degrees, 46 minutes, 58 seconds. Decimal value = 41 + (46/60) = 41.78
6. Select Weather Data from the list of Setups on the left of the Setup screen (figure 7)
7. Set the Rain collector tip bucket size as follows
a. Signature Series –1mm (Standard)
b. 500/600 Series - .01 mm
c. All others –gauge specific
8. Set the Weather display update and Write data to database to the desired rate
9. Close the WeatherHawk PRO Setup window, click the connect button in lower right corner of main display
window to test communication between software and weather station.
Figure 7: Weather Data settings
Figure 8: WeatherHawk PRO

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Installation Procedures
Many installation configurations for the WeatherHawk are possible. This document describes standard installation
configurations. For questions about installation configurations not described in this document, contact
WeatherHawk Customer Service.
TP1 Tripod Installation Procedures
Procedure 1a: Tripod Preparation for Installation.
1. Attach tripod feet to the legs of the tripod using the bolts and self-locking nuts provided (Figure 14).
2. If using mast extension(s), drive the extension(s) into the mast by inserting the tapered end of the extension
into the top of the mast and striking the extension top with a wooden block or mallet (Figure 15).
Do not use a metal hammer to drive in the mast extension since this will deform the top of the mast
extension.
3. If using the guy-wire kit, loosely install the guy-wire kit by following Procedure 2: RP1-KT Guy-Wire Kit
Installation.
Figure 14: The TP1 Tripod Kit includes the nut and bolt
(left) used to attach each foot to the tripod
Mast
exten
Tripod mast
Figure Figure 15: Mast extensions for use with the TP1
tripod kit

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Do not tighten the turnbuckles yet. The turnbuckles will be tightened in step 5 of Procedure 3: Mounting
the WeatherHawk Station on a Tripod or Pole.
4. Install the mast in the tripod and adjust mast height if necessary (Figure 16).
5. Once the mast height has been set, tighten all six collar bolts.
6. Install the tripod at the site. Refer to “Procedure 1b: Ground Installations”, “Procedure 1c: Flat Roof
Installation”, or “Procedure 1d: Peaked Roof Installations”.
Procedure 1b: Ground Installations
1. If needed, prepare the site. A temporary site may require brush or tall weeds to be removed and footings
dug if the site is not level. A permanent site may require pouring a concrete pad or fabricating some other
form of a permanent base (See WeatherHawk website for a hole pattern drawing of the TP1 to assist in pre-
cast bolt alignment for permanent footings).
2. Use a rubber band to attach a level device, such as the one in the Tripod Installation Kit, to the midpoint of
the tripod mast.
3. Place the tripod on the site.
4. Adjust tripod footings until the mast is level. Some adjustment is available by loosening/tightening the
upper and lower collar bolts. If more adjustment is required, then for temporary sites, remove or replace
soil under the TP1 feet. For permanent installations, use shims to adjust the foot foundation height.
Figure 16: The mast fits in the center of
the tripod. The mast height is adjusted by
moving the tripod legs or removing the
mast cup and sliding the mast up or down
in the collars.
Mast
Tripod

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For temporary sites, ensure the soil under the tripod feet is well compacted. Otherwise the tripod may not
remain level after the tripod feet have been secured to the ground.
5. Secure the tripod feet to the ground (See Figure 17).
6. Follow Procedure 3: Mounting the WeatherHawk Station on a Tripod or Pole.
Procedure 1c: Flat Roof Installation
1. For each of the tripod feet, remove the protective paper from one side of the sealing pad to expose the
adhesive then adhere the sealing pad to the bottom of the tripod foot (Figure 18).
2. Use a rubber band to attach a level device, such as the one in the Tripod Installation Kit, to the midpoint of
the tripod mast.
3. Place the tripod on the roof, remove the protective paper from the bottom of the sealing pads, and extend
the tripod legs.
4. Position the tripod such that it is level and all of the foot pads are flat on the roof. Some adjustment is
available after the tripod has been attached to the roof by loosening/tightening the upper and lower collar
bolts. If more adjustment is required, use shims to adjust the foot foundation height until the mast is level.
5. Screw the lag bolts through the holes of each tripod foot (Figure 19). The bolts must pierce the sealing
pads.
Figure 17: For temporary sites, drive the stakes of the TP1-
ST Kit (left) through the center hole in each tripod foot
(right). The stakes should be driven in until they barely
contact the foot surface. For permanent sites, install user-
supplied bolts through the holes in each tripod foot.
Figure 18: The sealing pads, as well as other hardware used
to attach the tripod feet to a roof, are included in the TP1
Tripod Kit. Either side of the sealing pad can be attached to
the bottom of the tripod foot. Protective paper color may
vary.
Sealing Pad

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6. Follow Procedure 3: Mount the WeatherHawk Station on a Tripod or Pole.
Procedure 1d: Peaked Roof Installation
The WeatherHawk wind sensors should be at least 8 feet (2.5m) above the roof peak, which requires
two extensions (TP1-MX) and a guy-wire kit (TP1-GK). If using the HM1 please refer to Appendix
B for setup diagram
1. For each of the tripod feet, remove the protective paper from one side of the sealing pad to expose the
adhesive then adhere the sealing pad to the bottom of the tripod foot (Figure 20).
2. Use a rubber band to attach a level device, such as the one in the Tripod Installation Kit, to the midpoint of
the tripod mast.
3. Place the tripod at the peak of the roof with one foot pad on one side and two foot pads on the other side of
the peak (Figure 21).
Lag Bolt
Lag Bolt
Sealing Pad
Figure 20: The sealing pads, as well as other hardware used
to attach the tripod feet to a roof, are included in the TP1
Tripod Kit. Either side of the sealing pad can be attached to
the bottom of the tripod foot. Protective paper color may
vary.
Figure 21: Proper placement of the
tripod on a peaked roof. When
properly placed, all foot pads rest
flat on the roof.
Figure 19: The TP1 Tripod Kit includes
the lag bolts used to secure the TP1 to a
roof. Two lag bolts are used for each foot.
The bolts must pierce the sealing pad.

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Lag Bolt
Lag Bolt
Figure 22: The
Tripod Kit includes
the lag bolts. Two
lag bolts are used
for each foot. The
bolts must pierce
the sealing pads.
4. Remove the protective paper form the bottom of the
sealing pads and extend the tripod legs (Figure 22).
5. Position the tripod such that it is level and all of the
foot pads are flat on the roof. Some adjustment is
available after the tripod is attached to the roof by
loosening/tightening the upper and lower collar
bolts. If more adjustment is required, make minor
position changes in the tripod assembly until the
mast is level.
6. Screw the lag bolts through the holes in each tripod foot and into the roof.
7. Follow Procedure 3: Mounting the WeatherHawk Station on a Tripod or Pole.
Procedure 2: TP1-GK Guy Wire Kit Installation
1. Cut the guy-wire cable into three equal length pieces.
2. Loop one end of each guy-wire through a Bracket eye-bolt and clamp the guy-wire using one of the Clamps
provided.
3. Install the Bracket on the tripod mast about six inches (15 cm) from the top of the mast then loosely tighten
the bracket bots that lock it to the mast.
4. Insert the mast into the Tripod and rotate the mast assembly until the bracket eye-bolts all line up with a
tripod leg then loosely tighten the mast collar bolts on the tripod.
S-Hooks
Turnbuckles
Clamps
Bracket
Guy-Wire

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5. Tighten the guy-wire bracket bolts until they deform the mast by dimpling the surface to assure the bracket
does not slide when the turnbuckles are tightened.
6. Unscrew the turnbuckle until approximately 80% of both eye bolt threads extend beyond the turnbuckle
body.
7. Hook an S-hook to an eyelet on each of the tripod feet. Alternatively, the S-hooks can be connected to
user-supplied eye-bolts set into a concrete pad or another fixed structure.
8. One at a time, grasp a guy-wire and loop it around its corresponding S-hook to roughly determine its
correct length then cut the guy-wires to eliminate any excess length.
9. Hook the unattached end of each S-hook to an eyebolt on the end of a turnbuckle.
10. Loop the free end of each guy-wire through its respective turnbuckle eye-bolt and pull it tightly then clamp
the guy-wire using one of the clamps provided.
a. The guy-wires need to remain loose until after the WeatherHawk assembly has been properly
oriented. The turn-buckles are tightened in step 5 of Procedure 3: Mounting the WeatherHawk Station
on a Tripod or Pole.
b. Guy-wires will stretch for a few weeks after installation. You should periodically check them for
tension and re-tighten the turnbuckles as required until they stop stretching.
Procedure 3: Mounting a Signature Series Station on a Tripod or Pole
This procedure assumes the WeatherHawk has been setup and tested at the computer location, and that a
tripod or pole has been installed at the site.
1. Place your WeatherHawk assembly on top of the mast or pole with the base firmly seated on the top edge
of the mast or pole (Figure 23).
WeatherHawk Base
Mast or Pole
Figure 23: The WeatherHawk
assembly properly seated on a
mast or pole.

17
WeatherHawk®
815 W 1800 N Logan, UT 84321-1784, Email: [e-mail] Copyright© 2004, 2013
Toll free in USA: 866-670-5982, International: 435-227-9802, FAX: [phone] Printed 2013
Bubble
l
Figure 26: The bubble level
confirms the station is level,
which is required for accurate
rainfall and solar radiation
measurements.
2. Loosely tighten the U-bolt nuts so that the WeatherHawk is stable but can be rotated on the mast or pole
(Figure 24).
3. As a reference, use a magnetic compass (supplied with the optional Tripod Installation Kit) and rotate the
WeatherHawk assembly until the reference line on the wind direction sensor is aligned with Magnetic
North (Figure 25).
4. Firmly tighten the U-bolt nuts.
5. If the TP1-GK Guy-Wire Kit has been installed, assure that its
orientation will not interfere with the solar panel (if installed), then
evenly tighten the turnbuckles to tension the guy-wires.
6. Confirm the WeatherHawk is level by viewing the bubble level on top
of the WeatherHawk. Minor adjustments can be made by
tightening or loosening the appropriate guy-wire turnbuckle,
placing shims between the WeatherHawk base and the top of the
TP1 mast or pole, or loosening the mast bolts at the top and
bottom of the TP1 tripod and shifting the vertical orientation
(Figure 26).
U-Bolt
Nuts
Figure 24: Two views of the WeatherHawk station. The U-bolt and nuts are shown.
N
N
Figure 25: Accurate wind direction
measurements require the reference line
on the wind direction sensor to be aligned
with Magnetic North.