Ametek Western Research IPS-4, User Manual

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4-22 | IPS-4 Dual Bench (UV / IR) Analyzer
Inject Zero fluid
This function injects Zero fluid into the sample system to flush the
Measuring Cell of light-absorbing compounds. During this operation,
the zero solenoid is open and “Zero Hold” is displayed in the Status
area of the HOME screen. Note that this mode does not actually Zero
the analyzer.
Inject Span fluid
This function injects Span fluid into the sample system, which can
be used to observe the analyzer’s response to species of known
concentration(s). During this operation, the span solenoid is open and
“Span Hold” is displayed in the Status area of the HOME screen. Note
that this mode does not actually Span the analyzer.
Start measure
This function returns the analyzer to normal Measure mode from any
of the Inject Zero fluid , Inject Span fluid , Zero Gas Flush , or Span
Gas Flush functions. To return the analyzer to Measure mode, select
this function and press
ENTER
. The message “Please wait . ..” appears
while the analyzer performs a Sample Flush before switching back to
Measure mode.
Manually Starting a Zero Calibration
Refer to “Manually Zeroing the Analyzer Sample System” in Chapter 3 for
information about how to perform a manual zero on the analyzer.