Adjustment - BRAND Dispensette S Instrucciones De Manejo

Adjustment

After a long period of usage an adjustment of the instrument
might be necessary.
I Calibrate for example at nominal volume (see page 47).
I Calculate mean volume (result of weighing) (see page 47).
I Adjust the instrument (to the calculated mean volume).
I After the adjustment, further calibration is necessary to
confirm appropiate adjustment.
Example:
The gravimetric check gives an actual value of 9.90 ml for a
10 ml instrument set for a nominal volume of 10.00 ml.
Type Digital
1.
Open housing by sliding the latch to the left and removing
the front (Fig. 1).
2.
Pull out the safety lock. The adjustment cover will then
come off (Fig. 2). Discard the adjustment cover.
3.
Pull the red knob to disengage the gears. Set the display to
actual delivered volume (e.g., 9.90 ml) (Fig. 3).
4.
First press in the red knob and then the safety lock again
(Fig. 4).
5.
Replace housing and slide the latch to the right (Fig. 5).
Alteration of factory setting is indicated by a red recalibra-
tion flag (Fig. 6).
Type Analog-adjustable
1.
Insert the pin of the mounting tool into the cover plate,
and break it off with a rotating motion (Fig. 2). Discard the
adjustment cover.
2.
Insert the pin of the mounting tool into the adjustment
screw (Fig. 3) and rotate to the left in order to increase
the dispensing volume, or rotate to the right to decrease
the dispensing volume (e.g. for an actual value of 9.97 ml,
rotate approx. 1/2 turn to the left).
3.
The change in the adjustment is indicated by a red disk
(Fig. 4).
Adjustment range
Nominal
volume
1 ml
2 ml
5 ml
10 ml
25 ml
50 ml
100 ml
48
Digital Analog/Fix
max. +/- max. +/-
- 6 µl
24 µl 12 µl
60 µl 30 µl
120 µl 60 µl
300 µl 150 µl
600 µl 300 µl
- 600 µl
Type Digital
1
3
5
Type Analog-adjustable
1
3
One rotation
corresponds to
~ 8 µl
~ 16 µl
~ 40 µl
~ 80 µl
~ 130 µl
~ 265 µl
~ 400 µl
2
4
6
2
4