Abbott CELL-DYN 3200 System Operator's Manual page 58

Use or Function
System Components
Flow Panel
1 Vent Filter
2 Vent
3 Sample Transfer
Peristaltic Pump
4 Waste Chambers
5 WBC Mixing Chamber
6 RBC Mixing Chamber
7 HGB Flow Cell
8 Shear Valve
9 Y Valve
10 Open Sample Probe
(With Wash Block)
11 Normally Closed
Valves
12 Diluent Reservoir
13 Sheath Reservoir
14 Normally Closed
Valves
15 Diluent/Sheath Filter
16 Tube Spinner
17 Closed Sample
Needle (With Wash
Block)
18 Sample Injection
Syringe
19 HGB Lyse Syringe
20 WBC Lyse Syringe
21 Diluent/Sheath
Syringe
22 Waste Chambers
Figure 1.5 Flow Panel Components
Shear Valve Assembly
1-10
The major components of the Flow Panel are depicted in Figure 1.5. A brief
description of Flow Panel components follows.
2 3 4
1
12 13
14
The three-piece ceramic Shear Valve isolates a precise volume of whole blood by
means of a shearing action as the front and rear sections of the valve rotate. The
aspirated blood is isolated in three separate volume segments — one for the WBC
dilution, one for the HGB dilution and one for the RBC/PLT dilution. Sensors
located before and after the shear valve ensure the integrity of the aspirated
specimen. In both Open and Closed modes an ultrasonic sensor checks the segment
as it is aspirated. Additionally, in the Closed mode, an optical sensor checks the
segment as it exits the shear valve.
5 6 7 8
15 16 17 18 19 20 21
CELL-DYN
Section 1
11
9
10
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® 3200 System Operator's Manual
9140181H—October 2001