Adjusting parameters in the device
24
Functions of the SD card
The SD card is used to import and export device settings, to log the
error and maintenance messages and to update the firmware.
Caution!
Measurement data and error messages are only saved
when the SD card is in the device.
To read and change the data on the SD card, you need the
program (see page 27).
Storage of measured values and alarms
Error and measurement files are stored in subfolders separated by
year and month:
•
One file each for measured values and errors per month is stored
in the folder of the year. The file name format is:
ME<year><month>.csv
for measured values and
AL<year><month>.csv
for errors/alarms.
•
If required, subfolders for the 12 months of the year are created in
the folder of the year and one file each for measured values and
errors per day is created there. The file name format is:
ME<year><month><day>.csv
for measured values and
AL<year><month><day>.csv
for errors/alarms.
•
Data is stored in “Comma-Separated-Value” format to allow it to be
easily imported into spreadsheet programs and databases.
-
Column 1 indicates measured value “ME” or alarm “AL”.
- Column 2 shows the indicator used to determine the measuring
range.
- The M1 column contains the designation of the measured quan-
tity (CL for Chlorine).
- The actual measured value and its unit follow after M2.
- The devices have no adjustable limit values and only one meas-
uring channel. The columns “M2”, “limit” and “limit value” are in-
cluded only for reasons of compatibility with other devices.
The storage of measured values and alarms/messages on the SD
card is always active as long as it is plugged in.
The file format is ASCII, DOS. The file for measurement data, for ex-
ample, is created as follows:
sep=,
"type","parame-
ter","date","time","M1","M2","meas.value","unit","limit","limit
value","limit","limit value",
ME,CL2250,24.06.2020,11:54,CL,-,1.50,ppm,limit val.1,0,limit val.2,0
ME,CL2250,24.06.2020,11:56,CL,-,1.80,ppm,limit val.1,0,limit val.2,0
ME,CL2250,24.06.2020,12:51,CL,-,2.25,ppm,limit val.1,0,limit val.2,0
ME,CL2250,24.06.2020,13:33,CL,-,2.33,ppm,limit val.1,0,limit val.2,0
ME,CL2250,24.06.2020,13:55,CL,-,2.45,ppm,limit val.1,0,limit val.2,0
In the file, the comma is explicitly set as separator in the first line
"sep=," to allow the file to be imported directly into Microsoft Excel. If
