Microtronics myDatalogGauge 3G, User Manual

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9. Analyse the fill level values determined during setup mode. If the displayed values do not match the
ones of the reference measurement, the zero point will need to be adjusted. To do so, calculate the
difference between the fill level determined by the BLE Gauge sensor module and the reference
measurement and enter the difference in the input field for the "Trimming" parameter (see
"Measurement channels" on page 83). As the "Trimming" parameter is added to the measurement
value of the BLE Gauge sensor module, a negative prefix must be set for the "Trimming" parameter if
the determined fill level value is greater than the reference measurement (see "Additional explanation
on the zero point adjustment and installation height of the pressure sensor" on page 84).
Display of the fill level determined during setup mode.
1 Tool tip that specifies the fill level at a certain
time and indicates the average value 2 Average of the data generated during setup
mode.
10. Activate setup mode again if zero point adjustment was required. During the initial connection
established during setup mode, the changed configuration, i.e. the new "Trimming" value, is first
transmitted to the myDatalogGauge 3G and then to the BLE Gauge sensor module.
11. Wait until setup mode is terminated and then compare the determined fill level values with the
reference measurement again. If the values are still not the same, complete the zero point adjustment
again.
Note: The current value of the "Trimming" configuration parameter must now be taken into
consideration when calculating the difference between the determined fill level and the
reference measurement.
8.2.4.2 Zero point adjustment with the help of the Bluetooth connection (BLE)
Note: As the minimum record interval is 1 min., this process is only suitable if the fill level is as
consistent as possible during the zero point adjustment.
1. Place the pressure sensor and the BLE Gauge in the final installation position (see "Suspended
installation of the BLE Gauge " on page 52).
2. Activate the required measurement channel in the "Measurement channels" configuration section by
selecting the mode and specifying the serial number of the BLE Gauge (see "Measurement channels"
on page 83).
Note: If you have purchased the myDatalogGauge 3G as a set (data logger including up to 2 BLE Gauge
sensor modules), the serial numbers of the BLE Gauge are already saved in the memory of the data
logger. In this case, it suffices to select "Automatic" mode. The saved serial number is displayed in the
input field for the serial number, although it cannot be changed.
3. Enter the installation height of the pressure sensor in the input field for the "Sensor Offset" parameter
(see "Measurement channels" on page 83).
4. Ensure that the "Trimming" parameter is set to 0 (see "Measurement channels" on page 83).
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