Waters 2998, Operator'S Manual

Page: 65 / 122

Diagnostic tests 4-3
Rule:
The maximum deviation must be within
+
/
−1
nm of the standard
calibration to pass.
Tip:
If the test fails, flush the flow cell and run the verify detector
calibration procedure again.
5. Click Close.
Reading lamp energy
Recommendation:
Impurities in the flow cell may affect reading lamp energy.
Ensure that the flow cell is clean before you read lamp energy.
To read the lamp energy:
1. In the console, select 2998 PDA Detector from the system tree.
2. In the PDA detector information window, click Maintain > Read energy
> Read. The Read Energy dialog box appears.
3. Click Close.
Performing the erbium calibration
Recommendation:
Impurities in the flow cell may affect wavelength
calibration. Ensure that the flow cell is clean before you perform calibration.
Before you begin this procedure, your detector must be set up and configured
as described in Chapter 2 .
During the start-up verification sequence, the PDA detector performs an
erbium calibration. You can also start this procedure manually.
To start a manual erbium verification:
1. In the console, select 2998 PDA Detector from the system tree.
2. In the PDA detector information window, click Troubleshoot > Erbium
calibration. The Erbium Calibration dialog box appears.
3. Click Optimize Exposures.
4. Click Start.
Result:
The detector moves the filter into the erbium position, locates
the 256.5, 378.9, and 521.4 nm erbium absorbance peaks, and locates
the 656.1 and 486.1 nm deuterium emission lines.