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Model 9110TH NOx Analyzer Calibration Procedures
Teledyne Analytical Instruments 209
9.4. MANUAL CALIBRATION AND CAL CHECKS WITH THE
VALVE OPTIONS INSTALLED
There are a variety of valve options available on the 9110T for handling calibration gases (see Section
1.4 for descriptions of each).
Generally performing calibration checks and zero/span point calibrations on analyzers with these options
installed is similar to the methods discussed in the previous sections. The primary differences are:
On instruments with Z/S valve options, zero air and span gas is supplied to the analyzer through
other gas inlets besides the sample gas inlet.
The zero and span calibration operations are initiated directly and independently with dedicated
buttons (CALZ & CALS).
9.4.1. SETUP FOR CALIBRATION USING VALVE OPTIONS
Each of the various calibration valve options requires a different pneumatic setup that is dependent on
the exact nature and number of valves present. Refer to the following diagrams for information on each
or these valve sets.