52 | IPS-4 Zone1/Analyzer
Normal Operation
After the analyzer is set up and started, the analyzer User Interface Panel
defaults to the HOME screen. During normal operation, the top three
lines of the User Interface Panel display the output names with their
corresponding values displayed to the right. The User Interface Panel is
updated once per second.
From the HOME screen, parameters or variables can only be viewed, they
cannot be changed. Parameters or variables can be changed only while
the software is in Edit mode. For more information about setting analyzer
security, refer to “Login/Set Passwords Screen” in Chapter 4.
Recording Initial Readings
Before operating the analyzer, it is important to observe the analyzer to
understand what normal operating conditions are, and how to use this
information later to help you determine problems with the analyzer.
AMETEK recommends that you observe and record this information
every month to obtain a history. From these recordings, you will be able
to determine if there are problems with the analyzer, such as increasing
sample response. These problems typically indicate maintenance is re-
quired.
Keep the log book in a safe location until you need to review it for pat-
terns of a longer sample response time.
Recording Initial Sample Response Time
The analyzer sample response time can be used for two functions. One
function is to help you set the sample fluid flow rate, as discussed earlier
in this chapter, under “Setting Sample Response Time.” The other func-
tion is to help you determine if the typical response time is increasing,
which can indicate a plug in the sample system which, in turn, can indi-
cate maintenance is required.
Typically, a good response time is less than 30 seconds to T90 when the
sample system is clean and operating at peak efficiency. Response time
may vary due to Sample Line length.
To check and record the initial sample response time:
1. Manually zero the analyzer.
2. After the zero is complete, view the HOME screen and observe the
analyte output concentration changes. Observe and record the time it
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