Plasma Ignition And Stability Problems; Plasma Ignition Problems - PerkinElmer AVIO 500 Customer Hardware And Service Manual

Troubleshooting
328
Table 6-16.
Problem Possible Cause(s)
Cannot get The standard may have too
suggested high a concentration.
detection
limits
(continued)
You may not be comparing
the appropriate value for the
wavelength you are using.
General Performance problems such
performance as poor precision or loss of
problems signal can often be traced to
the setup and condition of the
sample introduction system.
You are having difficulty
getting values for silicon in
samples with HF.
Unexplained The torch or injector may be
background coated with a deposit that
shift reflects light, resulting in a
periodic background shift.

Plasma Ignition and Stability Problems

Plasma Ignition Problems

Possible reasons for unsuccessful ignition follow. Correct the problem, if
possible, and then try to ignite the plasma again.
• If the plasma will not light check the ignitor. Open the door to the torch
compartment. Check that the ignitor contact finger is making contact with the
Performance Problems: Troubleshooting Table
Corrective Action
The standard should be 100 times the
estimated detection limit.
Confirm that you are using the appropriate
wavelength and recheck the value. Refer to
the Syngistix Software Guide on the
Syngistix Document Pack CD for details..
See the section Checking the Sample
Introduction System on page 320.
Use a sapphire injector.
Replace the torch and injector.