Ultraflux Uf 841, User Manual

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53
NT UF 841 CP GB (d) / June 2015
5.5 NORMAL configuration
Comment: The following description will be restricted to the additional functions of normal configuration as
compared with simple configuration. The common base already explained in the simple mode section is not
repeated in this section.
5.5.1 "Pipe/fluid configuration" menu
1) Memory
The memory time is the time, given in seconds, for which the measurement is stored in memory when a
measurement is lost (echo loss).
This memory time is used in particular to avoid untimely actions from the instrumentation and control part of
the installation.
Two situations may arise:
Case no. 1: Duration of the measurement loss less than
the memory time. In this case, the flow meter holds the
last measurement until a new valid measurement is
obtained.
Case no. 2: Duration of the measurement loss greater
than the memory time. The flow meter extends the last
measurement until the elapsed time exceeds the memory
time. Then the flow metering system faults itself if there
are still no new valid flow rate measurements.
Duration of the
measurement loss
Time
Configured
storage time
Flow storage
Flow
Flow storage
Duration of the
measurement
loss
Flow
Time
Configured
storage time