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PROGRAMMING cont.
The count factor (CF) is the K factor of the ratemeter. Normally only one count factor
will be used. If so, leave F1 at the default setting of 1, enter the K factor into F2, and
skip F3. If two K factors are to be used, only one can be active at a time. The active
count factor will be selected via the front panel keys if F1 is set to 0, or will be
selected via the rear terminal inhibit input if F1 is set to 3.
The Eclipse internally calculates a count scaler based upon the K factor and another
factor, that it deduces from the count decimal point location. This will not be on the
test, but for those curious installers who want to know what the formula is, it is:
C o u n t S ca le r =
K F a cto r
10
(F4 value )
The result of the calculation must fall in the range of 0.0002-99999. Since this is an
extremely wide range for a count scaler, most values for F2 and F4 will work. Every
time a K factor is entered, the Eclipse calculates the new count scaler just to make
sure that it’s in range. If it is, it accepts the number and displays the result of the
calculation for one second. If the calculated scaler falls out of the range, the new K
factor value is not accepted, and an error message “bad C1”, or “bad C2” appears
on the display. Every time a new F4 value is entered, the Eclipse calculates the new
count scalers for both K factors (even if only one is used), and checks to see that they
are in range. If they are, everything is hunky dory. If one or both are out of range, it will
not accept the new count decimal location that is being changed in F4, and it will
display the appropriate error message(s).
The count display decimal point shows on the totalizer and batch count displays.
The Eclipse also uses the K factor to calculate a rate scaler. The calculation in-
cludes another factor, deduced from the rate display decimal point location as deter-
mined by block F5, and also the number of seconds value entered into F6. The rate
scaler formula is:
R a te S c a ler =
K F a c to r
(1 0 )
(F 5 va lue)
(# o f s e c on d s )
The result of his calculation must fall in the range of 0.001-9999. The rate scaler is
calculated every time a K factor (F2 or F3), or the number of seconds (F6), or the rate
decimal point location (F5), is changed. Any calculated rate scaler that falls outside
the range will cause the Eclipse to not accept the new value, and to display the error
message “bad r1”, or “bad r2”, or both.
The rate smoothing factor parameter F7 provides a filtering effect on the rate display
when flow rate changes. The ratemeter updates every 0.5 seconds. Since the rate-
meter is deadly accurate, if flow rate changes, the rate display will change. In some
systems, the rate display will bounce around due to fluctuations in flow rate. A rate
smoothing factor of 1 causes no filtering to occur. This is useful when the user must
