Campbell-scientific CS110 Electric Field Meter Manual de usuario descargar pdf (Pagina 23)

CS110 Electric Field Meter

Consequently, a downward facing and elevated configuration as illustrated in

Figure 8 is recommended for long-term field applications.

FIGURE 8. CS110 2 Meter CM10 Tripod Site

Inverting the CS110 reduces the effective gain while elevating it’s height

above ground 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

necessary to correct M

parallel_plate

for non flush-mounted configurations

[McGorman and Rust]. The corrected multiplier M

corrected

becomes as follows:

corrected

= C

site

⋅M

parallel_plate

(Eq. 5).

In equation 5, 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 the site correction facility illustrated in

Figure 9 to determine C

site

for various site configurations.

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Campbell-scientific CS110 Electric Field Meter Manual de usuario Pagina 23