KROHNE UFM 610P EN - Manual (Page 52)

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6.5 Propagation velocity
To make a flow measurement using the UFM 610 P on any liquid, it is necessary to know the propagation velocity in
metres/second. There is a short list of fluids that appear on the display when programming (See page 16), showing water and
various other liquids. However if the liquid you wish to measure is not on this list, by selecting measure, the instrument
measures the propagation rate itself but only for pipe internal diameter greater 40 mm, by selecting Other it is possible to enter
the propagation rate in m/sec, if known.
6.6 Maximum flow
The maximum flow is dependent on the velocity and pipe size.
6.7 Application temperature
On any application whose operating temperature is either above or below ambient temperature ensure that the transducers reach
and are maintained at the application temperature before undertaking a measurement. Transducer sets “A”, “B” and “C” have a
temperature sensor inside the block that needs to reach the application temperature before making a measurement. If the block is
not up to application temperature it could effect the separation distance and therefore the accuracy. When applying the
transducers to low temperature applications do not allow the pipe surface to ice up between the transducer and the pipe wall.
The ice will force the block away from the pipe wall and consequently you will lose the signal.
6.8 Flow range
6.8.1 Transducer set "A"
Diagonal 110mm
Reflex 110mm
Reflex 89mm
Diagonal 50mm
Reflex 50mm
Reflex 13mm
DIAGONAL MPS 0.03 0.06 0.13 6.10 13.47
| | | | | |
REFLEX MPS 0.03 0.08 3.03 3.78 6.70 8.63
Default Pipe Size Range
Figure 23