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Model 400E Ozone Analyzer
Instruction Manual
10.2.3. Particulate Filter
The Model 400E Ozone Analyzer comes equipped with a 47 mm diameter Teflon
particulate filter with a 5 micron pore size.
The filter is accessible through the front panel, which folds down to allow access,
and should be changed according to the suggested maintenance schedule described
in Table 9-1.
10.2.4. Zero Span Gas Supply Options
Several options can be purchased for the analyzer which allow the user to more easily
supply and manipulate Zero Air and Span Gas.
Option
50
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For more information of these options see Section 5.
P/N 04316 Rev: B
Description
Zero/Span Valve with
Sample/Cal valve.
Internal Zero / Span
Option (IZS) with
Sample/Cal valve
THEORY OF OPERATION
The available options are:
Delivery Conditions
Allows the use of calibration gasses, such as Zero
Air and Span Gas, from sources external to the
instrument. Gasses must be supplied at ambient
atmospheric pressure.
During instrument calibration Zero Air and Span
Gas flow is regulated internally.
Built in O
generator turns on and off to Internally
3
generates zero Air and Span Gas. Sample/Cal valve
switches between IZS supplied gas and gas from
the instrument's Sample Inlet.
May be used for performing Calibration CHECKS
ONLY .
IZS option is not intended for use during instrument
Calibration.
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