Installation manual

ISS Installation Guidelines

• Ideally, mount the ISS so that it is between 5’ (1.5 m) and 7’ (2.1 m) above the

ground in the middle of a gently sloping or flat, regularly mowed grassy or natu-

rally landscaped area that drains well when it rains. You can also mount the ISS

on the roof, between 5’ (1.5 m) and 7’ (2.1 m) above the roof surface. For areas

with average maximum yearly snow depths over 3’ (0.9 m), mount the ISS at least

2’ (0.6 m) above this depth.

• Never install the ISS where it will be directly sprayed by a sprinkler system.

• Avoid installations near bodies of water such as swimming pools or ponds.

• Do not locate the ISS under tree canopies or near the sides of buildings that create

“rain shadows.” For heavily forested areas, site the ISS in a clearing or meadow.

• Site the ISS in a location with good sun exposure throughout the day.

• For agricultural applications:

• Install the ISS so that it is between 5’ (1.5 m) and 7’ (2.1 m) above the ground

and in the middle of the farm between similar crop types (ie. 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 ISS performs best when installed over

well-irrigated, regularly mowed grass

• If the last three guidelines cannot be met, install the ISS at the edge of the pri-

mary crop of interest.

Siting guidelines that may affect the anemometer

• For optimal wind data, mount the ISS so that the wind cups are at least 7’ (2.1 m)

above obstructions such as trees or buildings that may obstruct wind flow.

• For optimal wind data, you may mount the ISS on a roof, keeping in mind ease of

access to the ISS for maintenance and safety considerations. Ideally, mount it so

that the wind cups are at least 7’ (2.1 m) above the roof apex.

• The standard for meteorological and aviation applications is to place the ane-

mometer 33’ (10 m) above the ground. Seek professional help for this such instal-

lation.

• The standard for agricultural applications is to place the wind cups 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 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 website (http://

www.davisnet.com/support/weather).

Mounting the ISS

The Vantage Vue ISS can only be mounted on the top of a pole or rod.

Note: A mounting pole is not included with your Vantage Vue ISS and must be purchased separately, either

from Davis Instruments or from your local hardware retailer.