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For
more detailed
information on
barometric compensation
see the technical notes
on the In-Situ software/
resource CD, or the
Downloads section of the
In-Situ website at www.
In-Situ.com
.
7 barotroLL
In-Situ’s BaroTROLL
®
is a special model of non-vented Level
TROLL designed to log barometric pressure from 0 to 16.5
PSIA (1.14 bar, 33.59 in Hg) at the surface near a submerged
non-vented Level TROLL. BaroTROLL data may then be
used to correct the Level TROLL data for barometric pressure
fluctuations.
proGrammInG
• Program before installation. Be sure to sync the clock.
• Schedule a log with the same start time as that in the paired
non-vented Level TROLL. Select the same sample interval.
InStaLLatIon
After programming, install the BaroTROLL in a protected location
above water level. Install the BaroTROLL near the submerged
non-vented unit. One possibility is shown
, using a Twist-
Lock Hanger and suspension wire.
• Be sure to attach the Twist-Lock Hanger before installation to prevent
flooding.