9ENG8008 GFM436 User Manual
13 User Calibration
Calibration of this instrument involves the use of pressurised cylinders of test gases.
A cylinder of the appropriate gas at the specified concentration needs to be connected to the ‘Gas In’ port at the top
of the instrument with the valve open when calibrating a point. It is recommended that a demand flow regulator is
used. If a demand flow regulator is not used connect the cylinder through a ‘T’ piece to bypass most of the gas to
exhaust and set the gas flow regulator to 500 ml/min.
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