In-Situ Aqua TROLL 100 and 200 Operators Manual - Manual (Page 65)

Page 65 Aqua TROLL Operator’s Manual
Barometric Compensation of Non-Vented Pres-
sure/Level Data
Win-Situ® Baro Merge™ software can post-correct absolute (non-
vented) level sensor data to eliminate barometric pressure from
the measurements. Baro Merge provides three options:
• Fixed Correction – A single offset value is applied to all
selected log data. Use this option if you know what the
barometric pressure was during the log, and know that it did
not change.
• Manual Entry – Specify two or more correction values to
apply to the log data. Use this option if you know that
barometric pressure changed during the log.
• BaroTROLL® Instrument log file – Absolute level sensor data
are corrected by barometric pressure values logged by an
In-Situ BaroTROLL Instrument during the approximate time
period.
Launching Baro Merge Software
Baro Merge may be opened as a stand-alone application from
the program group In-Situ Inc., or accessed from Win-Situ’s Tools
menu when both are installed on the same system.
Input
In the Fixed Correction and Manual Entry options, it is important
to know the barometric pressure for the general time period
covered by the log or logs you want to correct.
Baro Merge uses a Wizard-like interface consisting of three main
steps:
1. Select the type of compensation/correction you intend to
use.
Section 6: Pressure & Level