WeatherHawk Temperature Inversion System Site Installation Manual
Table of Contents 1. Overview................................................................................1 1.1. Power Sources .........................................................................................1 1.2. Site Selection............................................................................................1 1.3. Communications Considerations ..............................................................2 1.3.1 Direct Communications ...................................................
Site Installation Guide The WeatherHawk Temperature Inversion System is a meteorological platform designed for detecting the presence of a surface temperature inversion. A temperature inversion occurs when temperature increases with height within the lowest layer of the atmosphere (troposphere). This is called an inversion because normally within the troposphere, temperature decreases with height.
If your 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. . 1.3. Communications Considerations WeatherHawk offers a variety of communication options for use with the WeatherHawk Temperature Inversion System. The best communication option to use is dependent on the end user’s application and location resources. The most common options used are direct RS232 or wireless, spread spectrum radio.
1.3.2.1. Transmission Ranges Site your WeatherHawk within the spread spectrum radio transmission range. Typical line-of-sight (LOS) transmission ranges are listed below: • Standard WeatherHawk Antennas: up to ½ mile (0.8 km) • Optional Higher Gain Antennas on Both the Weatherhawk Station and the Base Station: Up to 7 miles The ranges assume no obstructions are in the line-of-sight. Line-of-sight is defined and described below. 1.3.2.2.
1.3.2.3. Testing Radio Transmissions Test the radio transmission of your WeatherHawk Inversion system by doing the following: 1. Connect your WeatherHawk Inversion System to the Host computer using the RS-232 cable or the RS-232 cable/USB adapter combination. 2. Initiate communications using WeatherHawk Inversion software. If the Inversion system is not properly communicating with the computer, check the settings and connections. You can also contact WeatherHawk Customer Service for help. 3.
If you are installing the CM375 mast at the same time as the Inversion System, go to Section 2.2. The following tables list the equipment that is included with an inversion system for mounting on a pre-existing tower/pole. It is advisable to inventory the system for completeness before beginning installation. Power supply options are listed in Appendix A.
2. Mount the wind speed and direction sensors onto the crossarm using the provided U-bolts (see Figure 6). The cross-arm should be mounted to the tower such that the wind sensors are at a height of 11 feet, on the south side of the tower with the direction sensor to the west and the speed sensor to the east. There is a reference mark on the wind direction sensor that should face north when mounted correctly. Wind Direction Sensor Wind Speed Sensor Figure 6: Wind speed and direction sensors.
2. Secure the sensor cables to the mast with the provided cable ties. 3. If your system is direct communications, attach the serial cable connector to the WeatherHawk 9-pin RS232 connector. 4. If your system is wireless, attach the antenna to the enclosure connector labeled ANTENNA (antenna is taped to the inside of enclosure). 5. Open the enclosure and install battery on battery mounting bracket using strap to secure battery to bracket.
2.2. Installing the CM375 Mast with the Inversion System This procedure is for customers who are installing the CM375 30-foot mast at the same time as their inversion system. Use Procedure 1 (instead of this procedure) if your CM375 mast has already been installed. The table below is a list of hand tools necessary for installing the CM375 mast with the inversion system.
2.2.1. Assembling CM375 Mast Sections 1. Remove mast sections and other bundled hardware from the tote (see Figure 9). Figure 9: CM375 Tote (pn. 21720) Sections are numbered for sequential assembly (see Figure 10). The crossarm-to-pole mounting kit (pn. 21669) contains the lightning rod, copper grounding rod, and duckbill anchor drive rod. Base Figure 10: Mast Sections and Base 2.
A compass is included in the Tensioning Kit (pn. 22071) to help you properly align the sensors. The tensioning kit is purchased separately from WeatherHawk. 3. Use the provided spikes (three each) to secure the base to the ground (see Figure 12). Figure 12: Spikes Installation 4. Insert the coupler from Mast Section 2 into the top of Mast Section 1 (see Figure 13). Figure 13: Coupler Installed in Top of Mast Section 1 WeatherHawk ® 815 W. 1800 N. Logan, Utah 84321-1784, Email: service@weatherhawk.
5. Secure the coupler joint using two flat washers, two lock washers and two bolts from the hardware bag (see Figure 14) Figure 14: Bag Containing Hardware 6. Place Mast Section 3 near the top of Mast Section 2 (see Figure 15). The BLACK tape around Mast Section 2 is a reference indicator (11 foot level) for wind set sensor mounts. Figure 15: Mast Section 2 and Mast Section 3 7. Remove the collars from Mast Section 3 and place them next to the mounting holes in Mast Section 2 (see Figures 15 and 16).
8. Remove the guy ring from the bottom guy kit (pn. 21663); see Figures 16 and 17. Figure 17: Bottom Guy Kit (pn. 21663) 9. Insert the ball end of each guy cable into its slot in the guy ring, and place the coupler of Mast Section 3 into the guy ring (see Figure 18). Figure 18: Guy Cables Inserted into Guy Ring Only one of three cables is shown. 10. Slide the coupler into Mast Section 2, and assemble the collars as shown in Figure 19.
11. Slide the coupler end of Mast Section 4 into the top of Mast Section 3, and fasten with the remaining components from hardware bag (see Figure 20). Figure 20: Mast Section 4 Ready to Be Installed in Mast Section 3 12. Remove the collars from Mast Section 5 (see Figure 21). Figure 21: Mast Section 5 13. Slide mast into Section 4 and assemble the collars as shown in Figure 22. Figure 22: Mast Section 5 Installed in Mast Section 4 WeatherHawk ® 815 W. 1800 N.
14. Remove the guy collar from the top guy kit (pn. 21661); see Figure 23. Figure 23: 21661 Guy Kit 15. Insert the ball ends of the guy cable into the guy ring, and then slide the ring down the mast to the collar (see Figure 24). Figure 24: Mast Section 5 and Guy Ring/Collar Assembly 2.2.2. Mounting Top Temperature Sensor and Wind Set Sensor 1. Mount the top Temperature Sensor (pn. 21414) 10 inches from the top of Mast Section 5.
2. Mount the wind speed and direction sensors onto the crossarm using the provided U-bolt (see Figure 25). Figure 25: Wind speed and direction sensors. 3. Use the supplied U-bolts and mounting hardware to attach the crossarm to the mast. The cross-arm should be mounted such that the cross-arm is perpendicular to the mast at a height of 11 feet on the mast.
2. Mount the lightning rod clamp onto the top of Mast Section 5 using the U-bolt and nuts (see Figure 27). 3. Insert the lightning rod into the clamp and tighten the screws (see Figure 27). Figure27: Installed Lightning Rod 2.2.4. Guy-Anchor Kit Installation A choice of duckbill anchor kits is offered for the CM375. The Duckbill Standard Anchor Kit (pn. 19282) is for standard soils, and the Duckbill Heavy Duty Anchor Kit (pn. 25699) is for aggressive soils.
2. At 20 feet, install the duckbill anchor with the supplied drive rod. The anchor needs to be driven into the ground at a 45° angle (see Figure 29). Drive the anchor into the soil until the loop or metal ring is approximately 4 inches above the ground. Drive Bar Duckbill Anchor o 60 45º Figure UTDUK 29: Anchor Driven into Ground at 45° Angle. (towers) 3. With a rod through the loop or metal ring, pull up on the cable or threaded rod until the anchor rotates and locks (see Figure 30).
6. Attach guy wires to anchors by first opening the turnbuckle to the widest setting. Attach turnbuckle to wedge end of the guy cable, and then attach the other end of the turnbuckle to an anchor (see Figure 32). Open turnbuckle to widest setting Anchor Guy Cable Wedge Figure 32: Turnbuckle Fastened to Guy Cable and Anchor. 7. If using a rope ratchet to assist assembly, set to 7 feet and attach to tension clamp on cable and to anchor end. Do this for both NE and NW anchors and top bottom guy cables.
2.2.5. Raise and Plumb the Mast 1. With NW and NE cables attached to anchors, have one person lift the mast, while another person pulls on the SOUTH cables to bring the mast to an upright position (see Figure 34). If using rope ratchets, adjust them to allow further steps. Figure 34: Raising the Mast. 2. Attach the SOUTH cables to the anchor.
5. Adjust each cable turnbuckle to maintain plumb and increase cable tension. A deflection of 3 inches (when using a 4.4 pound (2N) perpendicular force 68 inches from the duckbill anchor loop) equates to 100 pounds of tension in the cables (see Figure 37). Figure 37: Guy Cables with 100 lbs of Tension. 6. After tensioning the top guy cables, recheck the bottom guy cables. Adjust as necessary. 2.2.6. Mounting Equipment to Lower Part of Mast 1. Use the U-bolt to mount the Temperature/RH sensor (pn.
3. Open the enclosure and install battery on battery mounting bracket using strap to secure battery to bracket. Remove plastic protective caps from battery posts and attach battery cables making sure to connect the red cable to the red battery post and the black cable to the black battery post. 4. If applicable, mount the solar panel to Mast Section 1 using the provided U-bolts. The solar panel should be mounted 1 foot above the enclosure and facing SOUTH. 2.2.7. Cable Connections 1.
2.2.8. Grounding Rod Installation 1. Retrieve the grounding rod, ground wire, ground wire clamp, and locking nut from the grounding kit. 2. Within 1 foot of the base, drive the copper grounding rod into the ground (see Figure 39). Leave approximately 5 inches of the rod above the ground. 3. Fasten the grounding cable to the grounding rod using with the locking nut (see Figure 39). Figure 39: Grounding Rod Driven into Ground with Grounding Cable Secured 4.
3. Maintenance In order to ensure continued optimal operation, routine maintenance should be performed by the user on the WeatherHawk Inveriosn System. The following tasks should be performed on a monthly basis for permanently installed stations. 1. Inspect the mast base • Check base for damage, cracks, corrosion, etc.
2. Inspect top temperature sensor and radiation shield • Remove temperature sensor from radiation shield and inspect sensor for visible damage o Replace any damaged sensors • Inspect radiation shield for damage, debris, insects, and spider nests o Replace any damaged shields.
5. Inspect system enclosure • Check outside of system enclosure for damage and corrosion o Clean outside of enclosure • Open system enclosure and check for insects and spiders o Remove any insects or spiders • Visually inspect wires/cables inside enclosure for frays and breaks • Ensure battery is secured to mounting bracket with strap o Tighten battery strap if loose • Ensure enclosure is securely mounted to mast o Tighten any loose nuts/bolts Do not spray insect/spider killer inside enclosure.
Appendix A. Separately Purchased Equipment The following equipment can be used with the WeatherHawk Inversion System, but is purchased separately. This equipment can be ordered on-line at www.weatherhawk.com. Contact WeatherHawk Customer Service for questions concerning the equipment. A.1. Communications Options A.1.1 USB-AD Serial-to-USB Adapter (pn. 16878) The USB-AD Serial-to-USB Adapter allows the WeatherHawk station to be connected to the USB port on a computer.
A.2. Power Supply Options A.2.1. SP2-KT Solar Panel Kit (pn. 16851) The SP2-KT is a solar panel kit for recharging the internal battery. It has a 72 inch2 surface area and produces 5 W of power at a peak of 17.1 V. The SP2-KT includes: • 5 W solar panel • Mounting hardware A.2.2. ACP1 AC Converter (pn. 18863) The ACP1 recharges the WeatherHawk battery by converting 110-220 VAC, 50/60 Hz power to 18 VDC. It must be housed in a non-condensing environment or a weatherproof enclosure.
A.3.2. CM375 10-Meter Mast (pn. 21722) The CM375 10-meter Mast can be used for either permanent or temporary installations. It comes with five 6-foot galvanized pipes, a stainless-steel base, guy cables, a 1 m crossarm, and a mounting bracket. A duck-bill anchor kit (required) and the guy-wire tensioning kit (recommended) are ordered separately; see below. An 80-inch-long bag is included with the CM375; all of the CM375's components fit inside the bag allowing the CM375 to be carried from site to site. A.
A.3.5. Guy Tensioning Kit (pn. 22071) The Guy Tensioning Kit provides equipment that helps you install the WeatherHawk to the correct three-axis vertical orientation and to align the station to the magnetic North. Using this kit to properly orient the weather station helps assure accurate measurements.
