Reference System - Agilent Technologies 1100 Series Reference Manual

Figure 79
This type of so-called side-on photo-multiplier is compact ensuring fast response,
conserving the advantages of the short optical path shown in
PMTs are designed for specific wavelength ranges. The standard PMT offers optimum
sensitivity from 200 to 600 nm. In the higher wavelength range a red-sensitive PMT
can improve performance. For additional PMT types refer
FLF board"

Reference System

A reference diode, located behind the flow cell, measures the excitation (EX) light
transmitted by the flow cell and corrects flash lamp fluctuations and long-term
intensity drift. Because of a non-linear output of the diode ( depending on the EX-
wavelength), the measured data are normalized.
A diffuser is located in front of the reference diode (see
diffuser is made of quartz, reduces light and allows integral measurement of the
light.
1100 Series FD Reference Manual 247
Photo-multiplier Tube
on page 180.
Introduction to the Fluorescence Detector 7
Figure 74
to"Replacing PMT and/or
Figure 74
on page 244.
on page 244). This