Aztec 600 ISE ammonia and fluoride
Single-stream ion-selective analyzers
7 Logging
OI/AXM630–EN Rev. I
45
The measured value is logged at default intervals of 30 seconds.
Approximate durations for continuous recording of 1 stream is
shown in Table 7.1 (internal storage), Table 7.2 (external text
format files) and Table 7.3 (external binary format files).
Storage capacity onto internal (Flash) memory:
External (archive) capacities for text format files:
External (archive) capacities for binary format files:
7.1 SD Cards
There are two methods of archiving to an SD card:
An SD card is kept in the analyzer
Data is copied automatically to the SD card at set
intervals. The SD card is then swapped periodically for an
empty one.
Depending on how the configuration has been set, data is
added either to the card until it is full and then stops
archiving or the oldest data on the SD card is overwritten
by the newest.
It is advisable to back-up critical data stored on an SD
card regularly. The analyzer's internal memory provides a
buffer for the most recent data so if data stored on an SD
card is lost, it can be re-archived – see Section 7.2,
page 46.
Data is copied to an SD card when required
An SD card is inserted into the analyzer and a prompt is
displayed asking the user to select the unarchived data to
be copied – see Section 12, page 58.
7.1.1 SD Card Insertion / Removal
To access the SD Card:
1. Ensure the analyzer is offline.
2. Use a large flat-headed screwdriver to release the two
door catches
A
.
3. Open the door and insert the SD card
B
.
The red LED
D
is illuminated when the SD card is in use
by the analyzer.
4. To remove the SD card, If the red LED is illuminated, press
the button
C
and wait until the LED goes out.
5. Remove the SD card from the socket. The SD card can
then be inserted into an appropriate card reader attached
to a PC and the data downloaded.
Capacity
30 seconds
8 Mb
3 years
Table 7.1 Internal Storage Capacity (1 Stream)
Sample Rate
128 Mb
30 seconds
>10 years
Table 7.2 Text Formatted Archive Files (1 Stream)
Sample Rate
128 Mb
30 seconds
>10 years
Table 7.3 Binary Formatted Archive Files (1 Stream)
Note.
To set up the analyzer to archive data to an SD
card automatically – see Section 6.6.4, page 40.
Fig. 7.2 SD Card Removal
A
B
C
D