1100-2295 Rev 1
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MGS-408 User Manual
4.4. Data Logging
4.4.1 Data Logging Overview
With an SD card installed, the MGS-408 will log concentration, units of measure, gas
name, low or high alarm state, detector fault code and controller fault code, every
10 seconds.
Log data is buffered for 10-minutes before writing to the SD card, so it is important
to use the ‘SD EJECT’ menu item before removing the SD card, this will write the
contents of the buffer and turn off data logging, so the card is ready to be removed.
Log data is divided into weekly files using the naming convention MGS408_LOG_
WEEK_XXX_OF_YYYY.csv, where XXX is the week number (1-52) and YYYY is the year.
The file format is comma delimited text which can be opened directly in Microsoft
Excel. Row 1 will contain a descriptive header for each column. The supplied 32Gb
SD card can hold up to 10 years of log data.
4.4.2 SD Card Requirements
The MGS-408 comes with a 32 GB SD card installed, which can hold up to 10 years
worth of log data. A compatible SD card will have 32 GB or less capacity and be
formatted in the FAT32 format.
4.4.3 Data Logging Menu
From the data logging menu the user can safely eject the SD card, turn logging ON
or OFF, view the percentage of free space remaining on the SD card, and view any
current or historical fault codes.
Figure 4-20 -
Data Logging Menu
4.4.3.1 SD EJECT
Select this option prior to removing the SD card. This will write any buffered log
data to the card and turn off logging. Logging will automatically resume when the
SD card is re-installed.
Main Menu
DATA LOGGING
SD EJECT
press
OK,
to safely eject an SD card.
