Inverting the CS110 reduces the effective gain, while elevating its height above gound enhances
the gain, with respect to an ideal upward-facing, flush-mounted geometry. It should be
mentioned that this gain enhancement reduces the effect of unwanted electrical field offsets. A
site correction factor, C
site
, is necessary to correct M
parallel_plate
for non-flush-mounted
configurations [McGorman and Rust]. The corrected multiplier M
corrected
becomes
M
corrected
= C
site
• M
parallel_plate
In this equation, M
parallel_plate
is unique for each CS110, yet independent of a given site, whereas
C
site
is unique for each given site, yet independent of the particular CS110 used at the site. C
site
is
typically determined by using a flush-mounted, upward-facing unit in the vicinity of the site
needing correction. Campbell Scientific, Inc developed a site correction facility to determine C
site
for various site configurations.
An upward-facing calibration kit was developed to hold the CS110 in a flush-mounted, upward
facing position.
CS110 Electric Field Meter 23
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