MR MSENSE DGA 2/3 - Page 61

8 Operation
Maschinenfabrik Reinhausen GmbH 2023 614001150/12 EN MSENSE
®
DGA 2/3
Left-hand side Right-hand side
H
2
O
Water content (humidity) in %RH
1)
Oil
Oil temperature in °C
1)
The water content (humidity) display can be converted from %RH to ppm
via the MESSKO®MSET parameterization software if required (service
code 4 and 5). When the measured data is transmitted (e.g. to a SCADA
control center or a laptop), the water content is always transmitted in both
display formats.
If an asterisk (*) is displayed, the system is outside the specified measuring
range in accordance with the chapter "Technical data" [►Section 13, Page
90]. The following applies to the displayed measured value:
▪ During the first measurement after the running-in phase, the value of the
lower detection limit is displayed.
▪ If measured values within the specified measuring range have already
been recorded, then the last valid measured value is displayed.
The asterisk (*) disappears automatically as soon as the system is back in
the valid measuring range.
The default settings for the warning and alarm limits are in accordance with
the directives of IEEEC57.104 (for H2 and CO) and DINEN60422 (for wa-
ter content in oil).
You can adjust the limit values to your requirements via the
MESSKO®MSET parameterization software.
The gas formation rates can be set as both positive and negative values.
The configurable parameters per sensor value are:
▪ Concentration too high warning
▪ Concentration too high alarm
▪ Formation rate too high warning
▪ Formation rate too high alarm
Any alarms, warnings or other messages present are only shown in the dis-
play for as long as the set threshold value is exceeded.
H
2
CO H
2
O
[ppm] [ppm] [%RH] [ppm]
2)
Warning 500ppm 350ppm 30% RH 20ppm
Alarm 700ppm 570ppm 45% RH 30ppm
Gas formation rate warning 30ppm/d 30ppm/d 10% RH 10ppm/d
Gas formation rate alarm 50ppm/d 50ppm/d 15% RH 15ppm/d
2)
For mineral-based insulating oils