Teledyne 7300A, Operating Instructions Manual

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Infrared Gas Analyzer Operation 4
4-19 Teledyne Analytical Instruments
b. Check for leaks downstream from the sensor, where contamina-
tion may be leaking into the system.
c. Check flowmeter to ensure that the flow is no more than
200SCCM
d. Check temperature controller board.
e. Check gas temperature.
If none of the above as indicated, the sensor may need to be replaced.
Check warranty, and contact Analytical Instruments Customer Service.
4.4.2 Span Cal
The Span button on the front panel is used to span calibrate the analyzer.
Span calibration can be performed in either the automatic or manual mode.
CAUTION: If you are spanning the Cal Range by itself (multiple
application analyzers only), use manual mode
zeroing.
If you want to calibrate ALL of the ranges at once
(multiple application analyzers only), use auto mode
spanning in the Cal Range.
Make sure the span gas is flowing to the instrument.
4.4.2.1 Auto Mode Spanning
Observe all precautions in sections 4.4 and 4.4.2, above. Scroll SPAN and
enter the span function. The screen that appears allows you to select whether the
span calibration is to be performed automatically or manually. Use the UP/
DOWN key to toggle between
AUTO
and
MAN
span settling. Stop when
AUTO
appears, blinking, on the display.
Select span
mode: AUTO
Enter to move to the next screen.
Span Val: 2Ø.ØØ %
<ENT> To begin span
Use UP/DOWN key to change the span setting value.