Clarus 600/680 User’s Guide
4-55
Setting up an FPD
WARNING
Flame Photometric Detectors (FPD) use hydrogen as fuel. If
the hydrogen is turned on without a column attached to the
detector fittings inside the oven, hydrogen could diffuse into the
oven creating the possibility of an explosion. To avoid possible
injury, DO NOT TURN ON THE HYDROGEN unless a column
is attached to the detector fittings inside the oven and all fittings
have been leak tested.
Before disconnecting a column, make certain that the
HYDROGEN HAS BEEN TURNED OFF.
If two FPDs are installed and only one FPD has a column
connected to it, make certain that you plug the unused detector
inlet fitting with a
1/8-inch stainless steel plug (P/N N930-0061).
NOTE: To prevent potential damage to the FPD in the manual pneumatics version, the
hydrogen needle valve has been factory-set to a very low setting. Set both the
hydrogen and air inlet pressures to 30 psig, then measure and set the flows as stated
in this chapter.
NOTE: The PPC pneumatics detector gas modules have been set to OFF at the factory.
FPD Overview
In the Flame Photometric Detector (FPD), the column effluent is mixed with
hydrogen and then burned in air. Light emitted from the flame passes through a
lens, filter, and to a photomultiplier tube, which generates an electrical signal.
The Flame Photometric Detector is used for detecting sulfur, phosphorus, or tin
compounds, which produce chemiluminescent reactions with emissions at
wavelengths characteristic of the S
2
, Sn, and HPO species.
A filter that isolates sulfur emissions (P/N N6000637) is supplied with the detector.
Another filter that isolates phosphorus emissions (P/N N6000981) and a filter that
isolates tin emissions (P/N L4145472) are available from PerkinElmer at
www.perkinelmer.com.
To Next Page
Loading...
Need help?
General
