14
BÜCHI
Fat Determination
B-820/B-821
3.2
System description Autosampler B-821
3.2.1 Introduction
The Autosampler is comprised of essentially three modules:
the storage module, the injection tower module, and the pneu-
matics module. It is mounted on the Büchi Fat Determination
Unit B-820 above the injection head. The Autosampler is
operated through the keypad of the B-820.
The Autosampler is powered through the B-820 via a
connection cable. The power entry module as well as the
power on/off switch and the voltage selector module are
located at the rear of the Autosampler. If you want to connect
the Autosampler directly to the mains, you can adjust voltages
of 100, 120, 230, and 240 Volts and frequencies of 50/60 Hz
at the voltage selector module. Refer to paragraph 4.11.8
(Mains voltage connection to Autosampler B-821) to adjust
your own country’s voltage.
햲
Turntable
햳
Pneumatics module
햴
Power on/off switch
햵
Power entry module
햶
Carousel support
햷
Carousel
햸
Injection tower module
3.2.2 Carousel support
The carrousel support comprises a carousel, a position sensor,
a vial sensor, and the turntable. It is secured to a rotating
hinge on the injection tower. An indicator (LED) is located on
the front side of the carousel support; the LED lights when
the unit is ON.
3.2.3 Carousel
The carousel can hold up to
forty-eight sampling vials
of
2 ml. It may be removed for placing the vials. The serial number
label which is lettered from 1 through 48 may be glued on the
carousel. A small raised indicator at the center knob marks
the correct position.
3.2.4 Turntable
The turntable is driven by two motors, one to rotate the turn-
table (clockwise) and another to move the turntable forward
or backward.
The carousel mounts on the turntable and is fixed by a vertical
pin.
Figure 7: Autosampler B-821
3 Function
햲
햳
햴
햵
햶
햷
햸
