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FW-F030-P-M_v0404_01_EN.docx
3.3.2
EXPLANATION OF SETUP-MENU 1 - PRESET
SETUP
FUNCTIONS
AND
VARIABLES
1
PRESET
1.1
UNIT
This setting determines the measurement unit for preset, total and
accumulated total. The following units can be selected:
L - m3 - kg - lb. - GAL - USGAL - bbl - ---- (no unit).
Alteration of the measurement unit will have consequences for
operator and SETUP-level values. Please note that the K-factor has
to be adapted as well; the calculation is not done automatically.
1.2
DECIMALS
The decimal point determines for preset, total and accumulated total
the number of digits following the decimal point.
The following can be selected:
0000000 - 111111.1 - 22222.22 - 3333.333
1.3
K-FACTOR
With the K-factor, the flowmeter pulse signals are converted to a
quantity. The K-factor is based on the number of pulses generated by
the flowmeter per selected measurement unit (SETUP 1.1), for
example per cubic meter. The more accurate the K-factor, the more
accurate the functioning of the system will be.
Example 1:
Calculating the K-factor.
Let us assume that the flowmeter generates 2.4813 pulses per liter
and the selected unit is "cubic meters / m3". A cubic meter consists of
1000 parts of one liter which implies 2,481.3 pulses per m3. So, the
K-factor is 2,481.3. Enter for SETUP 1.3: "2481300" and for
SETUP 1.4 - decimals K-factor "3".
Example 2:
Calculating the K-factor.
Let us assume that the flowmeter generates 6.5231 pulses per gallon
and the selected measurement unit is gallons. So, the K-Factor is
6.5231. Enter for SETUP 1.3: "6523100" and for SETUP 1.4 decimals
K-factor "6".
1.4
DECIMALS K-FACTOR
This setting determines the number of decimals for the K-factor
entered (SETUP 1.3). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this setting influences the accuracy of the K-factor
indirectly (i.e. the position of the decimal point and thus the value
given).
This setting has NO influence on the displayed number of digits for
total (SETUP 1.2)!
1.5
BATCH MAXIMUM
This function limits the operator to enter a new preset-value which is
greater than the entered batch maximum.
3.3.3
EXPLANATION OF SETUP-MENU 2 - OVERRUN
Overrun can occur at the end of the batch process, as a result of slowness of a valve / pump.
Consequently, the accuracy is less. With this function, the F030-P analyses the actual overrun
characteristic after every batch. This information is used to correct the overrun automatically.
SETUP
FUNCTIONS
AND
VARIABLES
2
OVERRUN
2.1
OVERRUN
For an accurate overrun correction, it is necessary that the flow meter
meets certain technical demands, such as "high resolution" and
shows no "false" overrun due to a slow update time.
Do not enable this function if the flow meter does not meet these
technical demands.
2.2
TIME
The overrun characteristic of the system will be analyzed during a
certain time after the batch. In this way, false signal generated
through leakage are eliminated.
Enter here the expected time needed by the system to stop a batch. It
is advisable to provide extra time in order to avoid an incorrect
overrun correction or false leakage alarms.
Note that the next batch can only be started after elapsing of this
overrun time!
The minimum overrun time is 0.1 second, maximum 999.9 seconds.
