5 Fluid System
5-1
5 Fluid System
5.1 Main Functions
1. To achieve an accurate and reliable sampling performance through the syringe and the
probe;
2. To completely wash the inside and outside of the probe.
3. To completely wash the mixing bar;
4. To drain the liquid waste generated from reagent refrigerating system;
5. To provide the washing solutions and collect liquid waste.
5.2 Functional Structure
The fluid system mainly consists of sampling system and washing system. The sampling
system consists of syringe module and probe module; the washing system consists of
pump/valve module and wash-well module. The functional structure of the fluid system is
shown in Figure 5-1. The functions of individual module are listed as below:
1. Syringe module: drive the transportation of the reagent or sample and assure the
precision of the sampling of reagent/sample.
2. Probe module; A single probe is used to aspirate and dispense the reagent and sample
in the fluid system.
3. Pump/valve module: supply water to wash the inside and outside of the probe and the
mixing bar in a specified mode. The assembly consists of the interior pump, exterior pump,
solenoid valve and restrictor ring.
4. Wash-pool module: consists of two same wells, to wash the probe and the mixing bar
correspondingly.
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