5-4 | Model 933S UV Analyzer
To span the analyzer and optional sensor(s):
Figure 5-4 illustrates an example of an analyzer backpan layout (Eu-
ropean style analyzer), which illustrates the locations of calibration
gas connections points, regulators, and gauges. For other applications,
see Appendix A or the Final “As-Built” drawings, if ordered, in the
analyzer Documentation Package.
1. Before beginning calibration, perform a pressure leak check. Note that
even a small leak can significantly affect the sensor reading.
a. Set the Zero gas pressure to 10 PSI.
b. Block in the sample system. The sample system pressure should be
10 PSI.
c. Start the Configurator Software and establish communication with
the analyzer.
Cycle the Flow Control through all solenoids (if applicable) and then
change it to “auto” for the calibration procedure.
d. Isolate the Zero gas from the analyzer.
e. For approximately 5 minutes, observe the pressure gauges. Loss in
pressure must not exceed 0.5 PSI during this time.
NOTE
Setup (tab)Gas
Calibration
Figure 5-4.
Span gas and zero
gas inlet locations
(European).
MAY NOT BE EXACTLY AS SHOWN
GAS ATMOSPHERE IS PRESENT
DO NOT OPEN IF A HAZARDOUS
SERIAL COMMUNICATIONS PORT
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