HF131PEN_v0501_05
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3 - 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 F131-P analyses the actual overrun
characteristic after every batch. This information is used to correct the overrun automatically.
OVERRUN
31
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.
OVERRUN TIME
32
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.
4 - DISPLAY
DISPLAY
41
The large 17mm digits can be set to display the actual batched quantity
(increase) OR to display the remaining quantity to be batched (decrease).
FLOWRATE
42
This setting determines if the calculated flowrate will be displayed. Three
setting can be set:
off: flowrate will not be displayed
batch: after pressing start, the flowrate will be displayed till the end of
the batch. In this case, we advise you to set setting 41 to "decrease"
toggle: flowrate is displayed alternating with the preset value.
5 - POWER MANAGEMENT
When used with the internal battery option, the user can expect reliable measurement over a long
period of time. The F131-P has several smart power management functions to extend the battery life
time significantly. Two of these functions can be set:
LCD NEW
51
The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display update, it is
strongly advised
to select a slow refresh rate.
Please understand that NO information will be lost; every pulse will be
counted and the output signals will be generated in the normal way.
The following can be selected:
Fast - 1 sec - 3 sec - 15 sec - 30 sec - off.
Example 3:
Battery life-time
battery life-time with a coil pick-up, 1KHz. pulses and FAST
update: about 2 years.
battery life-time with a coil pick-up, 1KHz. pulses and 1 sec
update: about 5 years.
Note:
after a button has been pressed by the operator - the display
refresh rate will always switch to FAST for 30 seconds. When "OFF" is
selected, the display will be switched off after 30 seconds and will be
switched on as soon as a button has been pressed.
BATTERY-MODE
52
The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not count pulses, the display is switched off but all settings and totals
are stored. In this mode, power consumption is extremely low.
To wake up the unit again, press the SELECT-key twice.
