INWATER TECHNOLOGIES TGP Tracker, User Manual, Page: 6 / 17

InWater Tracker
User Manual
– 2021
6
1.250.850.0022 | INFO@INWATERTECH.COM | INWATERTECH.COM
2. Settings and functions
2.1. Main menu
To access the Main Menu, press the Menu button and use the
Up/Down arrows to move through the menu items (Figure 2). Press
Enter to select.
2.2. Numeric entry
When numeric entry is required, the values are adjusted by selecting
the place value (i.e. 1s, 10s, 100s) and scrolling through the number in
each place. The
Left/Right Arrows switch place value, Up/Down
Arrows increase/decrease the value. Enter is pressed to confirm
the entry. Esc is pressed to cancel the entry.
2.3. Calibration
All TGP measurement systems come pre-calibrated from the factory. The TGP probe has sensors for TGP
and Temperature. The Tracker meter itself has an onboard barometric pressure (BP) sensor. The
recommendations for calibration the 3 sensors is as follows:
1) The BP sensor has a long-term stability of +- 0.5 mmHg, so calibration is not necessary.
2) The TGP sensor should periodically be adjusted with a 1-point
calibration. The default and recommended procedure is to use the
BP sensor as the reference for the 1-point calibration as follows:
i. Remove the probe from water, dry off and allow to stabilize for
15 minutes.
ii. Press Menu and then highlight CALIBRATION and press Enter .
Highlight TGP mmHg and press Enter . Highlight 1 Point Cal and
press Enter .
iii. The default calibration value (in mmHg) will be set equal to the
current value from the BP Sensor. Press
Enter to complete the
calibration.
3) The temperature sensor is calibrated using the same steps as for the
TGP sensor but using an external temperature source for reference.
A “2 Point Calibration” is generally unnecessary and should not be
undertaken without first consulting InWater Technologies Technical
Support.
Due to inherent limitations common to all TGP probes, the probe must be periodically removed from
in-situ measurement and dried completely prior to calibrating. In most cases this should be done once
Figure 2. The menu screen. Press
Menu or Esc to return to previous
screen.
Figure 3. The Calibration menu