USER MANUAL SWG
Page 80 of 129
General information about the data storage
Data storage strategy is as follows:
•
The analyser may store up to 20,000 measurement points (including all
relevant data).
•
At the end of each measurement cycle (per sampling point) the current
values will be stored.
•
The memory is used as a ring buffer. As soon as the memory is completely
occupied, the latest measurements will replace the oldest measurements.
Specifically:
If the used memory is 99%, then the oldest 20% of the measurements will
automatically be exported to SD card in CSV format and then deleted from the
memory. In case the SD card export doesn't succeed (SD Card missing or read-only),
then only the oldest 4% of the measurements will be deleted. The file names
reflects the date of the most recent measurement contained in the export file, e.g.
"20141031.csv".
Example:
An analyser with 2 sample points and a total configured cycle time of 32 minutes
saves 2 * 24 * 60/32 = 90 measurements per day (45 of each sample point). So the
ring buffer will provide measurements of the last 20000/90 = 222 days (more than 7
months).
View stored measurements in text mode
This function can be reached from the Data Storage Menu by selecting one or all
sample points and by pressing F1='view text':
When entering the menu the latest stored measurement will be displayed. With the
keys F1='previous' and F3='next' the measurements can be browsed (
F3
will lead to
the oldest measurement when the latest was displayed before - wrap-around).
You may delete a single measurement here, usually you won't need this function.
The arrow keys have the same function than in the measurement menu.
View stored measurements in graphic mode
This function can be reached from the Data Storage Menu by selecting one sample
point (not all) and by pressing
F3='view graph'
:
Two curves for one pair of data are shown at the same time in one diagram. The
used scales are determined automatically and can't be changed by the user.
The offered pairs of data are determined by the setting of the zoom values in the
measurement menu. The displayed pair of data can be changed by pressing the
arrow keys up or down.
When entering the menu the measurements of the last 24 hours will be displayed.
This interval can be changed by pressing the keys
F1
=more or
F3
='less'.
Summary of Contents for SWG 100 SYNGAS
Page 1: ...SWG 100 SYNGAS USER MANUAL ...
Page 12: ...USER MANUAL SWG Page 12 of 129 11 H3PO4 inlet G1 8 inner thread ...
Page 24: ...USER MANUAL SWG Page 24 of 129 ...
Page 32: ...USER MANUAL SWG ...
Page 63: ...USER MANUAL SWG Page 63 of 129 Detail A Alarm Relais ...
Page 89: ...USER MANUAL SWG Page 89 of 129 8 3 Description of the analyser 1 1 1 1 2 ...
Page 99: ...USER MANUAL SWG Page 99 of 129 ...
Page 110: ...USER MANUAL SWG Page 110 of 129 12 Appendix ...
Page 114: ...USER MANUAL SWG Page 114 of 129 ...
Page 116: ...USER MANUAL SWG Page 116 of 129 Positions of the components 3 4 ...
Page 127: ...USER MANUAL SWG Page 127 of 129 ...
Page 129: ...USER MANUAL SWG Page 129 of 129 ...