Zero point adjustment using setup mode

Note: As the minimum record interval is 10 sec., this process is only suitable if the water level is as consistent as possible during the zero point adjustment.
  1. Place the sensor module in the final installation position. Tips and information on the installation of the sensor module are provided in the user manual of the relevant sensor module.
  2. If you want to use a sensor with mA output, complete all steps described in chapter Connecting the sensor.
  3. Connect the antenna (see Connecting the mobile network antenna ).
  4. Enter the installation height (see Remote sensor module of type LVL-R-5) or the offset of the sensor module (see Remote sensor module of type Gauge)in the relevant input field.
  5. Enter the required offset for the sensor with mA output in the relevant input field (see Universal input).
  6. Ensure that the "Trimming" parameter is set to 0 for all sensors the zero point needs to be adjusted for (see Remote sensor module of type LVL-R-5 or Remote sensor module of type Gauge for sensor modules or Universal input for sensors with mA output).
  7. Activate setup mode using the reed switch (see Setup mode) to transmit the configuration of the site to the Jellox Analog .
  8. Wait until some measurement values have been recorded. The waiting time depends on the configured record interval (see Device settings ) and the number of measurement values that you want to take into consideration when calculating the zero point adjustment. If necessary, you can shorten the record interval for this commissioning phase to reduce the waiting time.
  9. Activate setup mode using the reed switch (see Reed switch) to transmit the recorded measurement values to the myDatanet server.
  10. Click on the "Direct Report" symbol in the list of sites/applications to display the data saved on the myDatanet server.

  11. A so-called "report" is used to display the data stored on the myDatanet server (see Reports). Use the "Download" symbol to download the data of the displayed measurement value graphic as a tsv file and calculate the average value of the measurement values for the corresponding sensor (i.e. for the sensor module or the sensor with mA output). Detailed instructions on handling the reports are provided in themyDatanet Server Manual (805002).

  12. If the calculated average value 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 calculated average value and the reference measurement and enter a corresponding correction value in the input field for the "Trimming" parameter (see Remote sensor module of type LVL-R-5 or Remote sensor module of type Gauge for sensor modules or Universal input for sensors with mA output). Information on how the parameter "trimming" is integrated in the calculation of the water level can be found in the user manual of the relevant sensor. For sensors with mA output, the value of the parameter "trimming" is added. I.e., if the measurement value is to be reduced when adjusting the zero point, a negative sign is to be set for the parameter "trimming" (see Additional explanation on the zero point adjustment and installation height of the sensor).
  13. Trigger the setup mode again to transmit the altered configuration, i.e. the new value for "Trimming", first to the Jellox Analog and in case of "remote sensors" subsequently to the sensor module.
  14. If a zero point adjustment was required, repeat all of the steps from step 8 "Wait until some measurement values have been recorded".
  15. Then compare the calculated average value of the measurement values of the relevant senor (i.e. for the sensor module or the sensor with mA output) with the corresponding reference measurement again If the values are still different, 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 average and the reference measurement. Information on how the "Trimming" parameter influences the calculation of the water level is provided in the relevant user manual of the sensor module. For sensors with mA output, the value of the parameter "trimming" is added to the sensor measurement value.