Teledyne 9700 Instruction Manual page 31

Flue Gas Analysis System
If, on the other hand, reliable analysis, free of instrument distortion, is
required from the very onset of operation, TBE/AI recommends a 24 hour
run-in period before operational calibration and service .
In either case, emlploy the following procedure:
(1) Set the analyzer RANGE switch to the 0–25% position. Power
(2) Rotate the sample-caibration selector valve so that calibration or
Note: When the valve is rotated so that the handle index faces the inside
of the case (open port), atmosplleric air is drawn in by the pump
and flows through the oxygen analyzer. Be sure that the valve is
returned to the sample inlet position after calibration is completed.
Never leave the valve in the half-way (closed) position with the
pump running.
(3) Allow air to flow through the unit for 3 to 5 minutes.
(4) Unlock and adjust the SPAN control until the meter pointer is
(5) Rotate the selector valve so that sample gas is flowing through
(6) Select the range of analysis that will provide the best possible
(7) Allow sample gas, not calibration air, to flow through the
Note: It is particularly vital to the condition of the A-3 cell employed in
flue gas (or high CO
exposed to a CO
has now been applied to the instrument circuitry and to the
sample pump.
span gas is being delivered to the analyzer.
in coincidence with the CAL mark (20.9% O
scale. Relock the SPAN control.
the analyzer.
resolution of the oxygen content of the sample gas.
analyzer for the duration of the equilibration period.
content applications) that the cell not be
2
free environment for a prolonged period of time.
2
TELEDYNE BROWN ENGINEERING
Analytical Instruments
Operation 4
) on the meter
2
4-3