Dual Detectors PM200/225 Series
PM220
he PM220/225 Series detectors are used to measure two fixed wavelengths in the range of 185–830nm. When used with Verity’s system controllers, the PM220/225 Series provides robust endpoint detection in appropriate applications.
PM225
The PM220/225 Series detectors are used to measure two fixed wavelengths in the range of 185–830nm. When used with Verity’s system controllers, the PM220/225 Series provides robust endpoint detection in appropriate applications. This series is most commonly used in applications where the chemistry is simple enough that overlapping spectra allow the use of a 10nm bandpass filter — but where two signals are necessary to ensure endpoint, or where two wavelengths are useful for alternative process recipes.
