3.5 Calibration
When shipped, the analyzer and sensor have already been calibrated at
the factory. However you may wish to verify the calibration; the
general procedure for doing this is to bring a suitable calibration gas
into the analyzer, press the “Up/calibration” button ,and then adjust
the reading with the UP and DOWN buttons until the analyzer agrees
with the calibration gas value. There is a detailed procedure describing
the exact steps given later in this manual.
It is rather common to find that when you introduce calibration gas
into the analyzer,the reading is quite different from what you
expect.This is normally caused by errors in gas handling,rather than
by calibration errors. If the gas doesn't read close to what you
expected,please look at the troubleshooting section of the manual
rather than simply adjusting the calibration to what may be a
completely incorrect value.
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