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Chapter 4
4.0 16 Point Programming
4.1 General Information
The 16 Point menu selection is used when the flow input
device gives a non-linear input signal. The unit uses up
to 16 different points, as entered by the operator, to form
a curve for linearizing the input signal. The setup of the
16 Point menu may tend to be confusing. It is suggested
that you review this chapter before attempting to go
through the setup menu.
Notes:
1) A minimum of three points must be set up.
2) If two consecutive input values or K Factors are set to
zero, the Flow Computer assumes there are no more
points above the points that preceded them. Extrapola-
tion is taken from the last two non-zero points.
3) If the input frequency is above the highest or below the
lowest frequency programmed, the unit will use the last
two points to extrapolate what the K factor should be and
the resulting actual flow. Care must be taken that the K
factor does not extrapolate to zero. If this happens, the
Flow computer will give erroneous readings.
4) Frequencies or apparent flows must be entered in as-
cending order.
5) The 16 Point option will not over ride the Cutoff Input
Filter frequency entered elsewhere in the Flow Variables
menu.
6) Press the C button when the desired number of points
are entered. This will exit the 16 Point setup routine.
4-1
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