Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 37)

UV Fluorescence SO2 Analyzer Operating Instructions
Teledyne Analytical Instruments 25
Operating Instructions
6.1 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 6-1: Additional 6400EH Warning Messages
MESSAGE MEANING
Vacuum Pressure Warning
The vacuum pressure reading is out of its allowed
range. The pump may have failed, or the instrument
may have a leak or obstruction in the flow path.
6.2 Test Functions
Please refer to the 6400E Manual, Chapter 6, for a complete list of
test functions for the 6400EH. The following table lists test functions
that are in addition to or differ from those listed there.
Table 6-2: Additional 6400EH Test Functions
DISPLAY PARAMETER UNITS DESCRIPTION
VAC
Vacuum
Pressure
In-Hg-A
The actual pressure measured on the vacuum side
of the 6400EH’s critical flow orifice. This is the
pressure of the gas in the instrument’s sample
chamber.
PRES
Sample GAS
Pressure
in-Hg-A
The current pressure of the sample gas as it enters
the sample inlet at the back of the analyzer, but
upstream of the critical flow orifice and before the
gas enters the reaction cell.