CETAC Aridus II, Руководство оператора

Страница: 23 / 62

Aridus II™ Operator’s Manual
Verifying Installation
23
4 Verifying Installation
Once installation of the Aridus II
™
is complete, it is important to verify that you
have installed the system correctly. Attempting to use the Aridus II
™
before
ensuring that it is installed correctly may result in damage to the system.
Verifying installation of the Aridus II
™
consists of three parts:
 Initial operating procedure

ICP-MS operation under normal conditions
 System optimization
This chapter explains initial operation of the Aridus II
™
, ICP-MS operation, and
the optimization of the Aridus II
™
.
Initial Operating Procedure
1
Plug the supplied power cord into the Aridus II
™
and then into the AC supply
outlet.
2
Turn on the power switch and allow the heaters to preheat. After
approximately 5-10 minutes, all stages should be operating at a steady state as
indicated by temperature readings of 160°C
±
2
°
on the heater for the
membrane desolvation system and 110°C
±
2° on the heater for the spray
chamber.
Standard Conditions
Ar Sweep Gas
Setting (L/min)
Nitrogen
(mL/min)
Spray Chamber
(°C)
Desolvator
(°C)
Nebulizer Gas
Flow (L/min)
2 - 8 0 – 20 110
°
160
°
0.7 - 1.1
3
Open the valves on the ARGON and NITROGEN gas lines. IMPORTANT: You
must first loosen the metal locking rings on the control knobs to freely adjust
the gas flows. Loosen the locking rings by turning counterclockwise. Then
turn the gas flow control knobs on the Aridus II
™
clockwise and allow the
system to purge. The argon control meter should be set to a reading of
approximately 3.0 L/min and the nitrogen flow set to approximately