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Functional description
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Optionally, up to 2 lid trays can be installed on the pump module. The lid
that was removed from the sample beaker is parked on the lid tray until it
is needed again to seal the sample beaker.
If malfunctions occur at the peristaltic pump, this will be displayed via LED
at the peristaltic pump.
3.5.3.1
Functional description – Peristaltic pump
The peristaltic pump operates in accordance with the volume displace-
ment principle.
The pump tubing in the interior connects the inlet and the outlet of the
peristaltic pump.
This pump tubing is pinched off by four internal rollers. Media are aspira-
ted in and out by this squeezing of the pump tubing and the volume dis-
placement that results from it.
3.5.4
Rack base – Functional description
The rack base is the skeletal structure for the sample robot.
The sample racks in which the sample beakers are located are stored on
the rack holders of the rack base. The rack holders contain sensors that
automatically detect which sample rack type is currently located on the
individual rack base.
The OMNIS sample robot system uses the sample rack type to detect
which type of sample beakers are located in the sample rack. This infor-
mation is passed along to the control which sets the gripper to the respec-
tive size of the sample beakers.
If a sample rack that is still to be approached by the sample robot is
removed, this is detected by the rack holders and passed along to the
OMNIS sample robot system. This sample rack will no longer be
approached by the sample robot and the absence of the sample rack will
be displayed in the control.
