Samson 3730 Series - Page 61

EB 8389-1S EN 61
Leakage sensor
− Slow: The mean value calculated from
the last 30 sound levels measured during
short-term monitoring (see uSection 9.2)
is used for monitoring (Fig. 12: Tight-
closing event 2 to Tight-closing event 31
with all sound levels).
− Very slow: The mean value calculated
from all the sound levels measured dur-
ing long-term monitoring (see u Section
9.3) is used for monitoring (Fig. 12:
Tight-closing event 1 to Tight-closing
event 31 with all sound levels).
The 'No alarm triggering' setting deactivates
the alarm function.
Dening parameters
1. Dene alarm parameters.
2. Select classication for status messages.
See u Section 9.1.2.3.
1.
Start-up > Reference graphs > Leakage
sensor > Process reference
− Response time: [No alarm triggering], Very
quick, Quick, Slow, Very slow
− Preset alarm limits
1)
: [Manufacturer
reference], Process reference, User-dened
2.
Device settings > Alarm settings > Status
classication > Valve
− Alarm limit 2 exceeded:
[
], , ,
− Alarm limit 3 exceeded:
[ ], , ,
1)
On selecting the alarm limit 'User-dened', we
recommend checking the correct setting of the
alarm limits using an operating time of one to
three months based on the measured data in
'Sound level monitoring' diagram (see
u Section 9.4).
9.1.2.3 Monitoring
If the determined mean sound level exceeds
the 'Alarm limit 2', the positioner generates
a 'Seat leakage' message with status classi-
cation selected for 'Alarm limit 2 exceeded'.
If the determined mean sound level exceeds
the 'Alarm limit 3', the positioner generates
a 'Seat leakage' message with status classi-
cation selected for 'Alarm limit 3 exceeded'.
Diagnostics > Monitoring > Valve
− Seat leakage:
, , ,
9.1.2.4 Reset
The process reference test (diagnostic param-
eters, measured data and analysis) and the
'Seat leakage' message can be reset by se-
lecting and executing the command "Reset
'leakage sensor process reference".
If the test is restarted and a test analysis has
already been performed, the analysis of the
old process reference test is overwritten.
Diagnostics > Service/maintenance > Reset
− Reset 'Leakage sensor process reference'