BrandTech Scientific PLT unit Pipette Leak Testing Unit - Manual (Page 48)

Testing single-channel pipettes (cont.)
Press the 'Start/Execute'
button. The 'Start' submenu
is called up.
Press the 'Start/Execute'
button.
The test is begun, and
the test pressure is set (in
progress...)
Shortly before the end of the
preparation period, the LED
light shines 1 time red and
1 time green, then the prog-
ress bar appears and the
system automatically starts
the measurement. At this
time, the pipette button is
pressed down evenly 2-3
times. The piston must return
the initial position before the
measurement is finished! The
progress bar graphic indi-
cates the remaining time and
the currently achieved vacu-
um. The LED indicator blinks
orange.
7.
Confirming the
pipette volume
8.
Starting the test
Press the pipette
button 2-3 times
ready
SC – 100 µl
start
Test
preparing...
restart back
Test
-121.21 hPa
restart
back
4s
(pressure value is only an
example)
PASS
start
SC – 100 µl
Q
L
: 0.04 hPa * ml/s
(leak rate is only an example)
After the test is finished, the
display indicates the leak
rate that was determined and
whether the system passed
the test.
The test can be repeated by
pressing the "Start/Execute"
button. Turning the select
knob leads directly to the
Main Menu.
FAIL
start
SC – 100 µl
Q
L
: 4.6 hPa * ml/s
(leak rate is only an example)
9.
Ending the test
The missing volume can be approximately determined
using the correlation table on page 61.
green
red
orange
What to do? How to do it Keys to press Display readout
Note:
48