ST-200 aQua
Operator’s Manual
76
A. Flow Path System
All reagents and samples flow in one direction through the entire flow path
system as shown. The flow path is a open loop with one valve, two pump
motors and reference housing which ensures that the electrodes will
always be kept wet, an important requirement of ISE’s. All flow path
connections are simple push-on, air tight connections, which requires no
special tools.
Figure 19
Valve functioning:
Valve:
It is used for aspirating and controlling the calibration solutions
A and B from the Reagent pack by moving the lock pin as per
requirement.
1. While aspirating Calibrant A, the valve’s lock does not move
because in ideal state the Calibrant B flow tube is in closed state.
2. While aspirating Calibrant B, the valve opens the Calibrant B flow
tube by moving its lock and obviously closes the Calibrant A flow tube.
Note:
At an ideal state the CAL-A flow path is in open condition and
obviously the CAL-B flow path is in close condition.
If
removal
of
ST-200
aQua
components
are
required
during
troubleshooting, the component removal order should be as follows:
To waste
container
Summary of Contents for ST-200 aQua
Page 8: ...ST 200 aQua Operator s Manual 7 ST 200 aQua Figure 1...
Page 13: ...ST 200 aQua Operator s Manual 12 Figure 7...
Page 29: ...ST 200 aQua Operator s Manual 28 E Sub Menus i Diagnostics...
Page 30: ...ST 200 aQua Operator s Manual 29 ii User Menu...
Page 31: ...ST 200 aQua Operator s Manual 30 iii Setup Menu...
Page 32: ...ST 200 aQua Operator s Manual 31 iv Parameters Note Star Indicates Blank...
