KROHNE Summit 8800 Vol 2 - Manual (Page 75)

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08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 STREAM CONFIGURATION 06
Turbine type API 5.5 level A.
Turbine frequency offset An offset to be added to the input frequency. Ideal for testing purpose:
even when no input is available, a frequency can be set to simulate an
input. Make sure that in normal mode the offset is 0.
Turbine frequency deviation The threshold value (+/-) for the deviation of the two frequencies above
which an alarm is raised.
Turbine pulse limit Used to monitor pulse fidelity to alarm an added or missing pulse caused
by electrical transients and electronic failures. This monitoring function
allows the user to reduce the flowmeter uncertainty factors.
Turbine pulse interval The time between pulses sequences. This is the maximum allowable time
for pulse limits before an alarm is activated.
Turbine failure limit Lack of continual pulses before the meter is deemed failed and raises an
alarm
Turbine direction change Number of pulses allowed in opposite flow to determine the direction of
the medium flowing in the meter.
Turbine minimum frequency Low cut-off frequency. This is frequency below which the flow will be
considered 0.
6 .2 .1 .3 Meter information
For each meter information to identify the meter can be enetered. This can be usefull as identi-
fier text on the screen or to send to a supervisory system in a system.
Figure 67 Define meter information
6 .2 .2 Ultrasonic
Liquid Gas Steam
Please refer to chapter 4.2 for metering principles of ultrasonic meters.
Four setup sections available to configure an ultrasonic flowmeter: