Filter
Top Products
18
IP2046/IM
Nov 2006
4.4.4 Selecting the correct Profile algorithm. Screen display: ProF
Factory default value: Linear
This selection is offered only if the user has chosen a duty of Flow or Contents, or is shown when
manually navigating the main menu - ignore if duty chosen is Level or Distance.
The MSP400 is pre-programmed with a selection of popular profiles which are mathematical formulae to
convert a linear level reading to a flow or volumetric PV.
Once converted, the 4-20mA and the display of the unit will operate according to the flow or
volumetric PV.
The options available are described in the following sections:
4.4.4.1 Flow measurement
3/2 Flume 3/2 flow law
5/2 V-Notch 5/2 flow law
mann Manning formula
PAr 1 1 ft Parshall flume
PAr 2 2 ft Parshall flume
PAr 3 3 ft Parshall flume
PAr 4 4 ft Parshall flume
PAr 5 5 ft Parshall flume
PAr 6 6 ft Parshall flume
PAr 7 7 ft Parshall flume
PAr 8 8 ft Parshall flume
FF01 Flume Flat 1
:
:
:
FP07 Flume Parabolic 7
The last 30 options for flow FF01 - FP07 comprise a selection of pre-defined standard
flow structures which may be of use if none of the other profiles suit. Refer to Appendix
D for details.
Note, when scrolling around the profile option loop, all flow and contents profiles are shown.
There are two other profiles which are available but which are not visible when
programming the MSP400 using the push buttons.
SPEC. P Special plotted : only used if the MSP400 has been configured by a HART master such as
the Mobrey MCU900 series controller or Mobrey H-Conf401 software
SPEC.C Special calculated : used when a standard profile is not available from the MSP400 library.
Allows the user to enter a Power law and a K factor, for example for a small Parshall flume or
to modify the K factor or power to allow for imperfections in standard flow structures.
To change the flow profile:
a) Press the green button ↓ to display the “ProF” menu entry screen.
b) Press the blue button → to display the current selection. If this selection is correct, press the red
button ↵ to return to the main menu.
c) To change the profile to one of the other options, press the blue button → to enter the “ProF” menu.
The current selection will now be flashing, indicating it may be changed.
d) Press the green button ↓ to scroll through the list of available profile options, as given in the table
above.