2487 detector displays warning message "Wavelength span 370nm Order Filter not in use for 370nm" - WKB9816

SYMPTOMS

• Customer is running the 2487 detector in Dual-Wavelength mode
• Customer is running wavelengths at 240 nm and 410 nm
• Warning message: The wavelength span 370nm. The second order filter not in use for 370nm.

ENVIRONMENT

• 2487 Dual-Wavelength Absorbance Detector
• 2489 TUV detector
• ACQ TUV

CAUSE

This is not an error.

The message appears when wavelength of 240 nm being entered along with a wavelength of 410 nm. The second-order filter accepts wavelengths that are either both above or both below 370 nm. You cannot bracket wavelengths with one above 370 nm and one below 370 nm.  

It is a reminder to user that possible risk, but not definite, without using the second filter.

FIX or WORKAROUND

This is extracted from the Operator Guide. 

ADDITIONAL INFORMATION