Waters Xevo TQD, Обзор и руководство по обслуживанию

Страница: 64 / 250

3 Changing the Mode of Operation
64 March 14, 2014, 715004387 Rev. B
3. Tighten the probe locking ring to secure the probe in place.
Requirement:
Fully tighten the probe locking ring. Doing so ensures a
successful result on the automatic pressure test, which runs when the
probe is correctly seated, and the source enclosure door is closed.
4. Using tubing equal to 0.004-inch ID, connect port S of the selector valve
to the IonSABRE II probe.
Recommendation:
To reduce peak broadening, use 0.004-inch ID tubing
for sample flow rates ≤ 1.2 mL/min; use 0.005-inch ID tubing for sample
flow rates
>
1.2 mL/min.
Requirements:
• If you are replacing the tubing between the selector valve and the
probe, minimize the length to reduce peak broadening.
• When cutting the tubing to length, cut it squarely (that is,
perpendicular to its horizontal axis).
5. Install the corona pin (see page 93 ).
Warning:
To avoid electric shock, do not use stainless steel tubing
or stainless steel “finger tight” screws to connect the selector valve
to the IonSABRE II probe; use the PEEK tubing and natural
(beige) colored PEEK “finger tight” screws supplied with the
instrument.
TP03129
Location hole of the probe
adjuster assembly
Probe location dowel
Probe label
Probe locking ring