21
filled with liquid on either side of the pump. Keep your finger pressed until the tubing is not filled.
Be careful not to fill up the container during the operations!
Press then on “START/STOP” (or on the rotating button) to start the pump and press again to stop it.
Finally measure the dispensed volume following the instructions and enter the figure thanks to the
rotating button. Even if the container is not totally filled, as soon as the dispensed volume in the
container approaches to the dose, the calibration will be valid.
The calibratIon is then done. FlexiPump
®
displays on-screen the obtained menu. According to the
functionning mode, it shows according to the functionning mode:
• Continuous mode: precision on the flow measurement
• Doses mode: precision on the volume of a dose
Example :
Test
If you want to test the calibration you just made, turn the button to select “TEST” and validate. Place
an empty container, possibly calibrated beforehand and then press on the button. The pump activates
itself and dispenses the theoretical volume of a dose. Check, possibly by weighing, the volume of the
poured liquid.
Calculation of accuracy
The accuracy depends on 2 things :
• tubing inner diameter
• dispensed volume during calibration
Tubing inner diameter :
The tubing inner diameter is important in the dose mode. It must be adapted to the volume of the wanted
dose : for a small volume, the tubing must be thin. If you use a large tubing to dispense a small volume,
inaccuracies may increase.
Dispensed volume during calibration :
Theoratically, the flow measurement after calibration is more precise after you have dispensed a large
volume because you would have measured the real flow during a longer time.
However all the phases of the movement of the pump: start, stop and continuous rotation, are also
important in the precision of the volume used. Therefore, it is better that the volume dispensed during
calibration be equal to the volume dispensed during use.
That is to say:
• Dose mode: the volume of a dose
• Continuous mode: the volume the most often dispensed
Accuracy displayed by the FlexiPump
®
is calculated on the basis of two parameters discussed above
(tubing diameter and volume added) and based on data drawn from experiments in the laboratories of
the manufacturer of the FlexiPump
®
.
3.7.4 Use a program
To run a program, the main menu, select “LAUNCH PROGRAMS”. A screen displays the list of
CALIBRATION
DONE
PRECISION : 97.55%
TEST
END
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