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Appendice
D Auto-surveillance et diagnostic (NAMUR NE 107)
Tab. D.2 : Aperçu général des événements prédéfinis
ID
catégorie
message
6.40
M
Measured sound speed of the measuring point
much higher than expected
6.41
M
Fluid sound speed of the measuring point
outside the expected range
6.42
M
Path difference of gain high
6.43
F
Path difference of gain too high
6.44
M
Path difference of signal-to-noise ratio high
6.45
F
Path difference of signal-to-noise ratio too high
6.46
M
Path difference of signal-to-correlated-noise
ratio high
6.47
F
Path difference of signal-to-correlated-noise
ratio too high
6.54
M
Relative path difference of sound speed high
6.55
F
Relative path difference of sound speed
too high
228
action
1. Check selected fluid
2. Check temperature
3. Check pressure
4. Check measurement arrangement
1. Check selected fluid
2. Modify fluid dataset
3. Pipe noise too high. Check for gain, SNR, SCNR.
Check transducer coupling (coupling foil)
Check transducer coupling (coupling foil)
1. Check gain
2. Check electrical connection, shielding and grounding
of transducers
1. Check gain
2. Check electrical connection, shielding and grounding
of transducers
1. Check gain
2. Check for different acoustic noise between sound paths
1. Check gain
2. Check for different acoustic noise between sound paths
Check transducer distances of sound paths
Check transducer distances of sound paths
2023-10-01, UMFLUXUS_F831V1-4FR
FLUXUS F831
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