MR MSENSE DGA 9 - 6. Device firmware; 6.1 General information

MSENSE
®
DGA 9 7045899/02 EN – 11.2020 Page 68
6. Device firmware
General information
The “gas-in-oil” analysis system MSENSE
®
DGA 9 is based on microprocessor control. A 32-bit “Cold-
fire” processor with a processor cycle frequency of 240 MHz is used. The device software was devel-
oped in programming language “C”. The system has a flash memory of 128 Mbyte capacity for saving
the measured data. This corresponds to a memory capacity for measured data for about 10 years.
After that, the oldest data are overwritten by the current measured values. When using analogue sen-
sors, memory capacity is reduced. When using additional sensors, the storage capacity depends on
the number of sensors and the chosen storage interval. The following calculation formula can be used
to determine the storage capacity:
 
 
     

=
+


12
1
20
1/288/23000
2128
n
n
StdcherSensorspeiTagByteTagByte
Byte
TageefeSpeicherti
With an additional sensor and a storage interval of 5 minutes, the result is as follows:
 
 
 
 
 
 
Tage
TagByte
Byte
TagByteTag
Byte
daysefeSpeicherti 2500
/26456
2128
/34562300
2128
2020



+


The defined alarms also affect the storage capacity. Each alarm status change requires 12 bytes of
space.
Note!!!
To avoid data loss, the measured values should be read out regularly us-
ing the Windows-based MR MSET DGA software.
6.1.1 Main screen
The relative moisture of the oil is displayed on the main screen in alternating fashion between the
absolute and relative oil moisture. The bar for the oil moisture changes between its absolute and rela-
tive moisture (3s change interval).
3 seconds