Cochran Lifeguard 04-150i, Руководство пользователя

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Calibration M ode (continued)
•
A-1
•
P-3 STOP HERE.
6. Expose the sensor to 100% O
2
( this must be 100% ). This can be
accomplished by placing the sensor in a plastic bag and flowing O
2
into the
bag (make sure not to seal the bag so as to produce pressure build up which
would cause a false reading) or using a continuous flow device.
7. Watch the WU readout as its digits climb. Depending on how much
adjustment the CTU needs to make, a minute or so may be necessary for
the reading to stabilize. It is not unusual for the readout to go past 100 or
stop slightly short of that reading when it stabilizes (This confirms that the
calibration was necessary).
NOTE: This reading must stabilize prior to proceeding to the next step.
Fig-20b
Calibration Mode (Sensor stabilized with 100% Oxygen)
8. When 15 seconds have passed with no change in the readout, press the
INCREMENT button to lock in the calibration.
9. With the sensor still exposed to 100% O
2
, observe the WU reading for this
value. If the reading was higher or lower than 100, you will see it gradually
re-adjust to 100, +/- 1.