Explanation Of Setup-Menu 1 - Preset; Explanation Of Setup-Menu 2 - Overrun - Fluidwell F Series Manual

3.1.2

EXPLANATION OF SETUP-MENU 1 - PRESET

1 PRESET
11 UNIT
12 DECIMALS
13 K-FACTOR
14 DECIMALS K-FACTOR
15 BATCH MINIMUM
16 BATCH MAXIMUM
3.1.3

EXPLANATION OF SETUP-MENU 2 - OVERRUN

Due to system parameters which are beyond the settings of the batch controller, an overrun can
occur at the end of a batch. The batch controller analyzes the overrun volume and automatically
corrects the volume each time after each batch (self learning).
2 OVERRUN
21 OVERRUN
22
TIME
This setting is used to select the engineering unit for the indication of the batch
total, the accumulated total and the pulse output.
When you change the engineering unit, you must recalculate and
reprogram the K-factor for the (accumulated) total. When you
recalculate and reprogram the K-Factor, the history for
(accumulated) batch total is not correct anymore, because the
(accumulated) batch total is not recalculated. For future reference,
best practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
This setting is used to set the amount of digits behind the decimal point for the
(accumulated) total indication.
This setting is used to set the K-Factor for the total. 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 engineering unit, for
example per m . A more accurate K-Factor (more decimals, as set in decimals
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K-Factor) allows for a more accurate operation of the system.
Example 1: Calculating the K-Factor.
The flowmeter generates 2.4813 pulses per liter and the selected unit is m
cubic meter consists of 1000 liter which gives 2.4813 pulses*1000 liter=2481.3
pulses per m . So, the K-Factor is 2481.3. Enter for the Flowmeter K-Factor:
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24813 and for the flowmeter K-Factor decimals: 1.
Example 2: Calculating the K-Factor.
The flowmeter generates 6.5231 pulses per gallon and the selected engineering
unit is gallons. So, the K-Factor is 6.5231. Enter for the Flowmeter K-Factor:
65231 and for the Flowmeter K-Factor decimals: 4.
When you recalculate and reprogram a new K-Factor, the history for
(accumulated) batch total is not correct anymore, because the
(accumulated) batch total is not recalculated. For future reference,
best practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
This setting is used to set the amount of digits behind the decimal point for the
K-Factor.
This setting is used to set the lower limit for a batch volume. An operator
cannot set a batch volume which is beyond the lower limit.
This setting is used to set the upper limit for a batch volume. An operator
cannot set a batch volume which is beyond the upper limit.
For an accurate overrun correction, it is necessary that the flowmeter
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 is not compatible to this function.
The overrun characteristic of the system will be analyzed during a certain
time after the batch relay has been de-energized. 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.
The next batch can only be started after the overrun time is completed!
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