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H.1.2 determination of csite, Figure h-6. determination of csite h-7 – Campbell Scientific CS110 Electric Field Meter User Manual

Page 85

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Appendix H. Tripod CS110 and StrikeGuard Site

Power and communication cables should be run down the equator side of the
mast and under the enclosure as shown. Wire-tie all cables into place so they
don’t move with the wind.

H.1.2 Determination of Csite

Surface mounted upward facing CS110: SN1022 with Mparallel_plate = 88.31.

CM10 Tripod Mounted StrikeGuard and CS110: SN1023 with Mparallel_plate =
81.77.

Each CS110 recorded one minute averages of 1 second measurements of electric
field data for the same one hour time period from 3 AM to 4 AM on August 11,
2005. The data from both units is plotted in Figure H-6. A best-fit line was
computed. The linear regression yields a Csite = 0.108 for the Tripod CS110 and
StrikeGuard Site.

Site Correction for CS110/StrikeGuard on CM10 Tripod August 11, 2005

1 minute average of 1 second samples

Results indicate Csite = 0.108

y = 0.1079x - 64.062

R

2

= 0.9994

-4000

-2000

0

2000

4000

6000

8000

10000

-40000

-20000

0

20000

40000

60000

80000

100000

Uncorrected Electric Field (volts/meter) for CM10 tripod mounted StrikeGuard & 2 Meter CS110

SN1023: Mparallel_plate = 81.77 Volt/meter*millivolt

E

le

ctr

ic

fi

el

d

(v

o

lts

/m

et

er

) f

o

r u

p

w

ar

d

f

aci

n

g

C

S

11

0 S

N

10

22

:

Mpa

rallel_p

late

= 8

8.31 V

o

lt/m

eter*

m

illivolt

StrikeGuard Uncorrected E_field 1_Min_Avg volts/m

Linear (StrikeGuard Uncorrected E_field 1_Min_Avg volts/m)

FIGURE H-6. Determination of Csite

H-7