DAVIS 6322C installation manual Anemometer Siting Guidelines, Locating the ISS and Anemometer

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Anemometer Siting Guidelines

Locating the ISS and Anemometer

For agricultural applications (Important for evapotranspiration (ET) calculations):

•Install the ISS and anemometer as a single unit with the radiation shield 5'

(1.5 m) above the ground and in the middle of the farm between similar crop types (i.e. two orchards, two vineyards or two row crops), if possible.

•Avoid areas exposed to extensive or frequent applications of agricultural chemicals (which can degrade the sensors).

•Avoid installation over bare soils. The ET formula works best when the ISS is installed over well-irrigated, regularly mowed grass.

•If the last three guidelines cannot be met, install the weather station at the edge of the primary crop of interest.

Anemometer Siting Guidelines

•For best results, place the anemometer at least 7' (2.1 m) above surrounding obstruc- tions such as trees or buildings that obstruct wind flow.

•If mounting on a roof, mount the anemometer at least 7' (2.1 m) above the roof apex (when using a Mounting Tripod, install the anemometer at the very top of the pole).

•If mounting the ISS and the anemometer together, such as on a pole or a wooden post, mount the anemometer so it is at least 12'' (0.3 m) above the top of the rain collector cone for best results.

•The standard for meteorological and aviation applications is to place the anemometer 33' (10 m) above the ground. Seek professional help for this type of installation.

•The standard for agricultural applications is to place the anemometer 6' (2 m) above the ground. This is important for evapotranspiration (ET) calculations.

Note:	For roof mounting, and ease of installation, we recommend using the optional mounting tripod
	(#7716). For other installations, use the Mounting Pole Kit (#7717).


Note:	For more detailed siting suggestions, see Application Note #30 on the Davis Support web site
	(http://www.davisnet.com/support/weather).

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Contents Integrated Sensor Suite Installation Manual Contents Introduction Included Components and HardwareComponents Preparing the ISS for Installation Tools for SetupHardware Assemble the Anemometer Check SIM Sensor Connections Check the Factory Installed Sensor Connections Open the SIM BoxConnect the Anemometer Cable to the SIM Cabled ISS Assembly Applying PowerVerifying Communication with the Console Troubleshooting Cabled ISS Communication Troubleshooting Cabled ISS CommunicationChecking Transmitter ID Wireless ISS AssemblyApplying Power to a Wireless ISS to eight different wireless stations. The defaultTroubleshooting Wireless ISS Reception Verifying Data from the ISS SensorsVerifying Data from the ISS Sensors Optional Changing ISS Transmitter ID Using Multiple Transmitting Stations Preparing the ISS for Installation Close the SIM BoxPrepare the Rain Collector Optional Insert the Metric Measurement Adapter Locating the ISS and Anemometer General ISS Siting GuidelinesAnemometer Siting Guidelines Locating the ISS and AnemometerOptional Wireless Transmission Considerations Optional Anemometer Cable Length ConsiderationsTesting Wireless Transmission at ISS Location ping tape around both the cables and the pole Installing the ISSGeneral ISS Installation Guidelines Orient the Wind VaneInstallation Instructions Installing the ISS on a Flat SurfaceInstalling the ISS on a Pole Accessories for Pole MountingGeneral Guidelines for Installing on a Pole Guidelines for Installing the ISS on a Pole Option 1 Installing ISS and Anemometer TogetherOption 2 Installing ISS Only Extending Wireless Transmission Range Finishing the InstallationAdditional Mounting Options Level the Solar and UV SensorsOptional Wireless Stations Extending the Console Cable Cabled ISS OnlyRelocating the Anemometer 4 Screw 3 Lock Washer Flat Washer Maintenance and TroubleshootingCleaning the Radiation Shield Rain Collector BaseMost Common Rain Collector Problem TroubleshootingCleaning the Rain Collector Cone Most Common Anemometer ProblemsContacting Davis Instruments Appendices Appendix A Re-orientingthe Wind VaneTo re-orientthe wind vane ISS Weather Variable Update Intervals Appendix B SpecificationsWireless ISS Cabled ISSINTERFACE SIM Board Display and ContentsSENSOR MODULE