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Calibration - AS FST
5) While the display shows a flashing CAL, make an airtight connection
between the delivery tube of the regulator and the open end of the
mouthpieces.
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6) Depress the regulator control button. When there is a continuous airflow - 6 liters per minute
for four seconds - the instrument should capture a sample automatically.
Make certain that the gas continues to flow for 1-2 seconds after the
sample is captured. (Sample collection is identified by a clicking sound.)
(Note: If for some reason you
cannot provide an adequate flow rate for the instrument to collect an
automatic sample, it is possible to perform an Accuracy Check by taking a
manual sample. To perform an Accuracy Check in this manner, depress
the regulator control button and have the gas flowing to the instrument for
seven seconds. On the 5th second depress the ON button to take
a manual sample. Make certain that the gas continues to flow for 1-2
seconds after the sample is taken.) |
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7) Detach the mouthpiece from the regulator. 8) Observe the result and compare it to the known value of the Standard gas.
If the value displayed is the same as the value of the standard you are
using your unit is calibrated. Depress the OFF button three
times, the value displayed will be accepted as the Calibration Value
and will flash three times before the instrument will power down. |
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Note :
If the displayed result does not match the expected
value or current target of the standard gas, you will need to adjust the
displayed result to the proper value. The result displayed will have
the digit furthest to the left flashing. If the flashing digit is
incorrect, press and release the ON button as many times as it is
necessary to cycle the displayed digit to the correct number. When the
digit is correct, press the OFF button to move the flashing highlight
to a digit to the right. After you have adjusted the furthest digit to
the right, and the OFF button is depressed, the new calibration value
will be flashed on the display three times. If you need to adjust this
number again, pressing the OFF button again while the entire
calibration number is flashing will provide you with this option
(the furthest digit to the left will be flashing). View Animation |
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9) Record the results in your
calibration log book. |
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