ProfiLux 4 Programming Guide
EN 2017-02-06 41
For a detailed analysis and further processing of the measurement data, a PC with our
program GHL Control Center is necessary. It can read out measurement data and store it as
text file. A simplified measurement data analysis can also be made directly at the device, see
menu item Analysis beneath.
Per sensor and measurement time point, one storage space in the measurement data
storage is allocated.
Under the menu item Measurement data the following sub-menus are available:
Settings – First, set the max. storage size which is reserved for the measurement data
recording. The reduction of the max. Memory size is only useful, if you want to restrict
the time period for data collection. See also the example shown below.
After that set the measuring period between 1 minute and 12 hours (after this time
the current values are stored). Finally, it is possible to select which of the available
sensors are to be taken into account when measuring the measured values.
A change in the settings may lead to the deletion of existing measurement data.
Before you save the new settings, you are first asked if you want to “Clear data?”
Erase measurements – All currently stored measurement values are deleted.
Status – Shows first when the last measured values were recorded, afterwards the
memory status and how many of the measured data have not yet been collected from
the PC.
Analysis - After the sensor whose measurement data is to be evaluated has been
selected, the upper line displays the average value and the lower line the minimum
and maximum values. The three values are determined based on all the data
currently stored in the memory.
Example calculation max. measurement
recording duration
Size of the measurement data storage 500 storage elements, measurement
data of 2 sensors shall be stored, recording every hour
-> Recording period = 1 h * 500 / 2 = 250 h = 10.4 days
Example setting of max. storage size
You want to store the measured data of 3 sensors (for example,
temperature, pH and redox) half-hourly, but the values in the memory
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