Sample Probe; Sample Pump - Siemens ADVIA 2400 Operator's Manual

If an assay is not running, you can operate the unit manually from the Manual Operation
window.

Sample probe

Figure 1- 11 Sample probe
After aspiration, the SPP is lowered into an RRV cuvette, where it dispenses the sample.
The probe's tip is 2 mm deep into the solution, ensuring that no droplet remains on the tip
after withdrawal.
Unlike the sample-dilution (DPP) and the reagent probes (RPP1 and RPP2), the
NOTE:
SPP does not have liquid level sensing. This is because the DTT cuvettes are always the
same size.

Sample pump

Figure 1- 12 Sample pumps
The sampling pump (SP) withdraws sample from DTT, and also dispenses sample into
the RRV cuvettes. The SPP executes both actions. During both actions, the sampling
pump valves (SPEV1 and SPEV2) are closed.
After the sample is aspirated, the SPP moves to the wash port, where its outside is
washed. Sample probe valve (SPEV2) is open during this process, allowing water to flow
over the outside of the SPP.
20
1)
Wash port
2)
Sampling probe (SPP)
1)
Sampling pump (SP)
2)
Sampling wash pump (SCP)
ADVIA 2400 Operator's Guide