E119-P
FW_E119-P_M_v0301-02_EN Page 31
Entering linearization points
A table of 15 linearization points can be entered into the unit. It is advised to enter the linearization
points in increasing order of frequency; however, this is not mandatory. The linearization points are
usually located at frequencies where the linear behavior of the flowmeter changes. Linearization
points that are not used can be disabled by entering a frequency of 0 Hz.
The following formula can be used to calculate the Meter Factors for the linearization points:
In this formula, the value of KF0 represents the average K-factor of the flowmeter and KFx @ flow x
represents the actual K-factor (derived from the actual flow) at the selected frequency (note that the
K-factors must be in the same engineering units (e.g. pulses / GAL) to perform the calculation).
The K-factor entered at
4.4: FLOWMETER > K-FACTOR[»30] must correspond with the KF0 used in
the calculations of the M-Factors.
5 LINEARIZATION
5.1..
.F
FREQ. / M-FACTOR
1 ... 15
The list with linearization entries of the flowmeter is entered here. The
entries can be entered in random order, although ascending order is
advised for easier verification. Each entry shows the following:
● M-Factor: Displayed on the top line of the display. A value between
0.000001 and 9.999999 can be entered. Most M-factors will be around
1.000000, for example 0.945354 or 1.132573.
● Frequency: Displayed on the bottom line of the display, with the number
of decimals selected set at 5.H: LINEARIZATION > DECIMALS FREQUENCY. The
maximum value is 9999 Hz.
When an entry is entered with 0 Hz, it is disabled. To enable or disable the
entire linearization function, use 5.G: LINEARIZATION > LINEARIZATION.
5.G LINEARIZATION
This setting is used to easily enable or disable the linearization function.
This influences the calculations in the following way:
● Disabled: the K-factor set at
4.4: FLOWMETER > K-FACTOR will be used
for the calculation of total and flowrate.
● Enabled: the K-factor set at
4.4: FLOWMETER > K-FACTOR will be used
as KF0 in the linearized calculations for total and flowrate.
5.H DECIMALS
FREQUENCY
Determines the number of decimals for the frequency entered.
5.5.6 MENU 6: REMOTE CONTROL INPUTS
6 REMOTE CONTROL INPUTS
6.1 REMOTE 1
Two remote control inputs are available. For each input, the function that is
executed when an input is switched (contact closed) can be selected:
● Off – The input is disabled.
● Clear – The value of Total is reset to zero. This setting only functions
when
10.8: TICKET > DELIVERY MODE is disabled.
● End delivery - The current delivery is ended and a delivery ticket is
printed. This setting only functions when
10.8: TICKET > DELIVERY MODE
is enabled.
● Total – A totalizer ticket is printed.
● Reprint – The last printed ticket is reprinted.
6.2 REMOTE 2
Remote control input 2 consumes more power than input 1.
Set input 2 to Off when less then 2 inputs are used.
5.5.7 MENU 7: ANALOG OUTPUT
An analog 4-20 mA signal is generated according to the flowrate with a 12 bits resolution. The
settings for Flowrate influence the analog output directly and should be configured first. The
relationship between rate and analog output is set with the following functions.
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