Xylem SonTek FlowTracker2 - 7.2. Measurement Site Information

SonTek – a Xylem brand
FlowTracker2 User’s Manual (January 2019)
109
i). Internal System functions comprise of internal clock, recorder, battery and
GPS data. These functions can be verified manually by evaluating the
information displayed or using external reference if required.
ii). Raw data function includes Velocity, SNR, Temperature, Battery and Tilt data
that is graphically displayed. These functions can be verified by manually
interpreting the information displayed or against a reference instrument.
The velocity data displayed under Raw Data for the Office Diagnostic tests should be
ignored as the data is not based on actual measurements conditions.
iii). Beam Check function is performed to verify the FlowTracker2 probe
performance. The procedure for performing a Beam Check must be followed
as stipulated in Beam Check Operation.
c) To verify the GPS Data functions place the FlowTracker2 handheld outside in an
open area with a clear view of the sky. The accuracy of the GPS data is directly
related to the number of satellites and HDOP value.
d) To verify the Raw Data and Beam Check functions place the FlowTracker2 probe
in a bucket of water (see Beam Check Operation).
e) The variables that are evaluated during the diagnostic tests are listed in Table 7:2.
Table 7-2 - Office Diagnostics
Function
Variable
Verification
System
Clock
• Date
• Time
• UTM Offset
• System Clock function show the current internal time of
the FlowTracker2 instrument,
• Verify if the internal system clock date and time is
correctly set and adjust if required.
Recorder
• Memory Available
• The Recorder function indicates the percentage of
available memory,
• If the available memory is insufficient download all
measurement files. Ensure that all measurement files
downloaded are stored in a secure area,
• Format
Recorder or delete Data Files to increase
available memory.
Battery Data
• Battery Type
• Percentage Full
• Battery Data function display the type of battery, voltage
and percentage full,
• Make sure the correct battery type is selected.
GPS Data
• Latitude
• Longitude
• Altitude
• Date
• Time
• The GPS Data function displays the GPS information
from the internal GPS,
• Compare GPS data supplied with external reference
such as Survey Bench Mark, handheld GPS or mobile
device equipped with GPS.
Raw Data
Display
• Velocity
• SNR
• Temperature
• Tilt
• Battery Indicator
• The Raw Data function display raw data for each
variable,
• Evaluate each variable data that are graphically
displayed or compare against a reference instrument in
the case of temperature measurements,
Automated
• Peak Level
• The Automated Beam Check and Beam Check