magnetic pump from the water tank and adjusted by voltage regulator to the stable pressure, about
0.45kgf/cm2.
2, vacuum pump, vacuum tank and pressure detector composes vacuum source with pressure value about
-0.7kgf/cm2. Vacuum tank has the function of stable vacuum pressure.
3,Vacuum liquid discharging is high concentrate liquid – reaction liquid including concentrated patient
sample and reagent,requiring separate collection.
4, when the colorimetric cup cleaning mechanism descends, turn off valves open the valve SV11. It tarts
assimilating sample under the vacuum pressure, and the liquid of colorimetric cup will be discharged
after a short period of time when the rinsing mechanism arrives at the bottom of Colorimetric Cup.
5, cleaning liquid and ionized water adding is completed by the SV1、SV2、SV3、SV7 and SV8 which
are timed. Because the vacuum liquid discharging begins to work simultaneously when adding liquid to
discharge redundant liquid, the liquid will not spill outside colorimetric cup.
6, SV7 and SV8 valves are responsible for adding cleaning liquid.
SV8 valve is three links, NO port connect with vacuum tank, NC connect with water seven pass.Before
adding or after the previous adding, open the valve SV7, but valve SV8 is at COM and NO conduction
status (power off status). Because there is a one-way valve in the 3-way top pipeline, cleaning fluid
flows into the middle pipeline of the SV7 and SV8 valves, and time valve SV7, cleaning liquid will
remain in pipeline. Open valve SV8 when adding, cleaning liquid will be added into colorimetric cup
through one- way valve under the pressure. About 500ul cleaning liquid is consumed each time.
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