Davis Instruments Fan-Aspirated Radiation Shield Installation Instructions Manual
Integrated sensor suite with fan-aspirated radiation shield for vantage pro2 and vantage pro2 plus
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Installation Manual
Integrated Sensor Suite with
Fan-Aspirated Radiation Shield
Installation Instructions Addendum
For Vantage Pro2™ and Vantage Pro2 Plus™
The Vantage Pro2™ Integrated Sensor Suite (ISS)
with the Fan-Aspirated Radiation Shield uses a
combination of fan-aspiration and shielding to
minimize temperature measurement errors due to
the effects of solar radiation.
Fan-Aspirated ISS Addendum
Overview
This addendum provides additional information
specific to the installation and use of ISS models
containing the fan-aspirated radiation shield. It is
intended to be used in conjunction with the "Inte-
grated Sensor Suite Installation Manual."
The table below shows the location of the information required to install and
maintain your Fan-Aspirated ISS system.
Section/Procedure
Tools for Setup
Preparing the Anemometer
Preparing the Radiation Shield
Powering ISS and Testing Communications
Powering and Testing the Fan
Choosing a Site for the ISS
Fan-Aspirated Shield Troubleshooting
In the ISS
In This
Installation
Addendum
Manual
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Summary of Contents for Davis Instruments Fan-Aspirated Radiation Shield
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Page 1: Table Of Contents
Installation Instructions Addendum For Vantage Pro2™ and Vantage Pro2 Plus™ The Vantage Pro2™ Integrated Sensor Suite (ISS) with the Fan-Aspirated Radiation Shield uses a combination of fan-aspiration and shielding to minimize temperature measurement errors due to the effects of solar radiation. - Page 2 Fan-Aspirated ISS Addendum Overview Components The Fan-Aspirated ISS includes these components: Rain Collector Solar Panel (Wireless SIM only) Housing Solar Panel Aspirated Radiation Shield The hardware shown here is provided for assembly and mounting: U-Bolts 1/4" Flat Washers 1/4" Lock Washers 1/4"...
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Page 3: Preparing The Rain Collector
Additional Components on Vantage Pro Plus ™ The Vantage Pro2 Plus includes an ultraviolet (UV) sensor and a solar radiation sensor. These two sensors are mounted next to the rain collec- tor on your ISS. See the Integrated Sensor Suite Installation Manual about mounting and maintaining these sensors. -
Page 4: Mounting The Issx
Preparing the Fan-aspirated Shield for Installation 2. Carefully cut and remove the plas- tic tie (usually black in color) that holds the two-sided tipping bucket mechanism in place during ship- ping. 3. See the ISS Installation Manual for instructions on inserting the optional metric measurement adapter. -
Page 5: Fan-Aspirated Shield Maintenance
• Use only one fan battery for some overnight aspiration but with slightly higher average daytime aspiration. • Remove both batteries for maximum daytime aspiration and no nighttime aspiration. See “Replacing Fan Motor and Batteries” on page 6 for more information. - Page 6 Fan-Aspirated Shield Maintenance 3. Unscrew the three threaded spacers holding the solar bracket and radia- tion shield together. 4. Remove the three screws from the bottom of the radiation shielding and separate the shield stack. Interior Maintenance Once the shield has been disassembled, do the following to clean and maintain the interior of the shield: •...
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Page 7: Theory Of Operation
Theory of Operation The diagram below shows how the Fan-Aspirated Radiation Shield draws out- side air up through the sensor chamber and between the three walls surround- ing the sensor chamber, while the shield stack prevents radiation heating of the outer wall. - Page 8 If you are unable to solve the problem, please call Davis Technical Support. We’ll be glad to help. Most questions can be answered while you’re on the phone. You can also e-mail us for support, or visit our website.