Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 27)

UV Fluorescence SO2 Analyzer Getting Started
Teledyne Analytical Instruments 15
3.3 Initial Operation
With the following exceptions, the operation of the 6400EH is
nearly identical to that of the 6400E. Please refer to the 6400E User’s
Manual, Chapter 3, for details on initial operation, including common
warning messages, functional checkout of the instrument, initial
calibration and common interferents for the 6400EH.
3.3.1 Warning Messages
Please refer to the 6400E User’s Manual, Chapter 3, for a complete
listing of warnings for the 6400EH. The following table lists warnings
that differ in the 6400EH from those described in the 6400E manual.
Table 3-2: Possible Warning Messages at Start-Up
MESSAGE MEANING
Vacuum Pressure Warning The vacuum pressure reading is out of it’s allowed range. The pump
may have failed, or the instrument may have a leak or obstruction in
the flow path.
3.3.2 Test Functions
Check to make sure that the analyzer is functioning within
allowable operating parameters As described in Section 3.2.4 of the
6400E Manual (P/N 04515). The available test functions for the 6400EH
is shown in Figure 3-5.
3.3.3 Interferents for SO
2
Measurements
Hydrocarbons are a significant interferent for UV fluorescent SO
2
measurements, however, the typical 6400EH application does not have
hydrocarbons in the sample stream. Therefore, in order to reduce cost to
the customer, the 6400EH in its standard configuration does not include
a hydrocarbon kicker/scrubber.
If your application includes hydrocarbons in the sample gas stream,
it is very important that they be removed from the sample gas prior to
them entering the analyzer’s sample chamber. A hydrocarbon Kicker
Option (OPT 65) package (see Section 5 below) is available for this
purpose.