Siemens ADVIA 1800, Руководство оператора, Страница: 13 / 222

System Overview 13
1 System Overview
Figure 1-1. The ADVIA 1800 Chemistry System
The ADVIA

1800 Chemistry System is an automated, clinical chemistry analyzer that
can run tests on human serum, plasma, or urine in random access, batch, and STAT
(interrupt) modes at a throughput rate of 1200 photometric tests per hour and 600
electrolyte tests per hour.
The ADVIA 1800 Chemistry System is for in vitro diagnostic use.
Operating principle
This sequence summarizes a photometric analysis on the Chemistry System:
1. The system performs cell blank measurements before reagents are added.
2. The first reagent (R1) for a test is aspirated from reagent tray 1 and dispensed by the
reagent probe into the cuvette in the reaction tray.
3. Samples on the sample tray or rack handler are aspirated and diluted by the dilution
probe, then dispensed into cuvettes in the dilution tray.
4. The dilution mixer stirs the diluted sample.
5. The sample probe dispenses the required amount of diluted sample into the RRV
cuvettes (the reagent is already in the cuvettes).
The system can use the remaining diluted sample in the DTT cuvettes for additional tests
on a workorder, a rerun, dilution, or reflex testing.
6. The reaction mixer 1 mixes the first reagent and the sample.
7. The second reagent (R2) for a test is aspirated from reagent tray 2 and dispensed by
the reagent probe into the cuvette in the reaction tray.
8. The reaction mixer 2 mixes sample and reagent 1 and reagent 2.
9. The reaction takes place for the amount of time designated in the assay.
10. The spectrophotometer obtains the concentration data every six seconds.
The spectrophotometer takes measurement readings as the RRV turns.