MR MSENSE DGA 2/3 - 7.4.1 Settings for carbon monoxide (DGA 3 only), hydrogen and H2 O concentrations in the oil

7 Commissioning
Maschinenfabrik Reinhausen GmbH 2023 534001150/12 EN MSENSE
®
DGA 2/3
▪ UNIX time stamp
▪ Service code
▪ Action maintenance information
▪ Modbus baud rate
▪ Modbus address
▪ Service database
▪ Field calibration
▪ Default calibration
7.4.1 Settings for carbon monoxide (DGA 3 only), hydrogen and H2O
concentrations in the oil
The upper warning and alarm values for the carbon monoxide content (CO)
(MSENSE®DGA3 only), the hydrogen content (H2) and the H2O concen-
tration can be specified.
Along with the limit values specified in the standards, you have the option
here of determining system-specific limits based on data collected or empiri-
cal values.
In the event of a limit value being exceeded (e.g. gas concentration in the oil
or gas formation rate), a warning message can be issued via the relay con-
tact. You can configure the respective settings using the MESSKO®MSET
parameterization software in accordance with the corresponding operating
instructions.
Carbon monoxide CO limit values (MSENSE®DGA3 only)
Limit value Default*) Minimum Maximum
Concentration too high warning 350ppm 0ppm 2,000ppm
Concentration too high alarm 570ppm 0ppm 200ppm
Gas formation rate too high warning 30ppm/d 0ppm/d 80ppm/d
Gas formation rate too high alarm 50ppm/d 0ppm/d 80ppm/d
4mA signal setting 25ppm 25ppm 1,999ppm
20mA signal setting 1,000ppm 26ppm 2,000ppm
Table7: Carbon monoxide (CO) limit values
*) Recommended values based on IEEEC57.104, Condition1
Hydrogen (H2) limit values
Limit value Default*) Minimum Maximum
Concentration too high warning 500ppm 0ppm 2,000ppm
Concentration too high alarm 700ppm 0ppm 2,000ppm
Gas formation rate too high warning 30ppm/d 0ppm/d 80ppm/d