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Dissolved Gas Analysis (DGA) in ppm
Hydrogen
(H
)
2
100
100
100
100
100
9.5 Maintenance Verification
Frequency: Annually or on alarm due to system fault conditions.
CAUTION
CAUTION
9.5.1
Visual Inspection
CAUTION
1. Check for oil leaks.
2. If necessary, clean and retighten the sensor.
3. Check for water or dust infiltration inside the enclosure; clean and fix the
enclosure if necessary.
4. Check for loose connections on terminal blocks and connectors; retighten if
necessary.
Page 140
Carbon
Acetylene
Monoxide (CO)
0
1,000
100
100
100
Table 9-2: Gas Reading Comparisons Between DGA and Hydran M2-X
Please advise the station operator prior to maintenance.
Working inside the Hydran M2-X may trigger unwanted
alarms due to parameter changes, power shutdown, system
rebooting or electro-static discharge
The surface of the base plate can be hot. Heating for the
dynamic oil sampling system (Section 2.5) is achieved using
heating resistors mounted on the internal side of the base
plate.
Read all warnings and recommendations in Chapter 1 before
handling the sensor.
Hydran* M2-X Instruction Manual
Ethylene
(C
H
)
(C
H
)
2
2
2
4
0
0
0
0
0
0
50
0
50
200
Hydran M2-X
Reading
(ppm)
100
250
115
119
122
MA-029
Rev. 1.0, 30-Jul-18
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