Flexim FLUXUS WD, Руководство по эксплуатации

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17 Advanced functions
17.7 Event trigger
FLUXUS WD
2018-07-16, UMFLUXUS_WDV1-3EN
138
Afterwards the properties of the event trigger are defined, see Tab. 17.5.
Tab. 17.4: Description of the source items
source item list item output
Flow quantities Flow velocity
Volumetric flow rate
Mass flow rate
Totalizers Volume (+)
totalizer for the volumetric flow rate in positive flow direction
Volume (-)
totalizer for the volumetric flow rate in negative flow direction
Volume ( Δ )
difference of the totalizers for the positive and negative flow direction
Mass (+)
totalizer for the mass flow rate in positive flow direction
Mass (-)
totalizer for the mass flow rate in negative flow direction
Mass ( Δ )
difference of the totalizers for the positive and negative flow direction
Diagnostic values Amplitude
signal amplitude
Quality
signal quality
SNR
ratio useful signal/noise signal
SCNR
ratio useful signal to correlated noise signal
VariAmp
amplitude fluctuation
VariTime
transit time fluctuation
Amplification
amplification, important to receive a useful signal
PIG detection
signalizes whether a pig is detected
This display will only be indicated if
PIG detection
is activated.
Sound speed Sound speed
measured sound speed in the fluid
Sound speed ( Δ )
difference of the measured sound speed and the sound speed calculat-
ed from the fluid data
Tab. 17.5: Properties of the event trigger
property event trigger setting description
Function
(switching condition)
MAX (x>limit)
The event trigger will switch if the measured value exceeds the upper
limit.
MIN (x<limit)
The event trigger will switch if the measured value falls below the low-
er limit.
ERR (x=fail)
The event trigger will switch if a measurement is not possible.
Within range
The event trigger will switch if the measured value is within the de-
fined range.
Out of range
The event trigger will switch if the measured value is outside the de-
fined range.
Type
(holding behavior)
Non-hold
If the switching condition is no longer true, the event trigger will return
to the idle state after approx. 1 s.
Hold
The event trigger remains activated even if the switching condition is
no longer met.
Hold for a while
The event trigger remains activated during a defined time even if the
switching condition is no longer met.