MR MSENSE DGA 9 - Degasing

MSENSE
®
DGA 9 7045899/02 EN – 11.2020 Page 74
6.2.5 Degasing
In this process step, the gases dissolved in oil are released by way of circulation into the air in the
extraction chamber (headspace principle). This results in a balance being achieved in the proportionate
quantities of gas between oil and air.
Legend
Condition of components
[1]
Filling level L0 “reached”
[2]
Filling level L1 “reached”
[3]
Filling level L2 “not reached”
[4]
Valve V9 “closed”
[5]
Flow F1 “not available”
[6]
Valve V1 “degassing”
[7]
Valve V3/ V7 “closed”
[8]
Compressor K1 "standstill”
[9]
Valve V4/ V8 “closed”
[10]
Valve V2 “closed”
[11]
Pump P1 “Operation”
[12]
Valve V5 “closed”
Safety functions and fault detection Degassing
Monitored components
Detectable errors
Filling sensors zero acknowledgement, low and high
Filling level L1 or L1 not reached
Filling level L2 reached
Filling sensors zero acknowledgement, low and high
Filling level drops
Measurement cell
Measurement cell offline
Pressure sensor in measurement cell
• Pressure drop
• Valve V4 does not close properly
Flow measurement
Valve V6 does not close properly