EC9830 CO ANALYZER OPERATION MANUAL
3-2 98307600 Rev. C-1
3.1.1 Analyzer Calibration Instructions
Note
This procedure is a quick guide to span calibration
of the EC9830 analyzer, intended for operators who
are familiar with gas analyzers and preparation of
calibration gas. For complete gas preparation and
multipoint calibration instructions, refer to
section 3.2 below.
1. Connect a source of span calibration gas to the analyzer through the Inlet
port. (See the remainder of this section for instructions on preparing
calibration gas.)
2. Allow the analyzer to sample the gas until a stable reading is obtained,
typically 15 minutes.
3. From the primary screen, start the calibration sequence by pressing either the
Up or Down arrow key ( or ) until the display prompts START MANUAL
CALIBRATION. Pressing the <Select> key will allow you to choose from: NO,
SPAN or ZERO. Confirm that the display reads SPAN and press <Enter> (↵). A
backlit cursor will be displayed on the CO concentration display.
4. Use the <Select> key to move the position of the backlit cursor, and the Up
and Down arrow keys to increment and decrement the value of the backlit
digit until the calibration concentration value is obtained. When the desired
concentration is displayed, press <Enter>.
5. Then move the backlit cursor to the INSTRUMENT GAIN field. The instrument
gain is automatically calculated by the analyzer. Press <Enter> to confirm this
value. Press <Exit> to return to the primary screen.
This completes the span calibration of the EC9830 analyzer.
Note
The auto-zero function of the EC9830 eliminates
the need for a traditional zero calibration. In special
applications where a zero calibration is required the
following procedure can be used:
1. Connect a source of zero air to the analyzer through the Inlet port.
2. Allow the analyzer to sample zero air until a stable reading is obtained,
typically 15 minutes.
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