9ENG8008 GFM436 User Manual
From here, the gas to be calibrated should be selected using the up and down arrows and then the OK key.
Only one gas may be calibrated at a time. Be sure to select the correct calibration option of the four available. This
can be done by scrolling with the up and down arrows once the gas has been selected. They are as follows:
Reset factory delta When an instrument is User Calibrated, the “Deltas”
are adjusted. These are the three numbers shown
below the gas reading. These represent the
adjustment ratios of the software to compensate for
any drift that the gas channels may have been subject
to. Resetting the Factory delta will remove any
adjustment ratios. Calibrating the instrument at any
point will create new deltas and overwrite the
previous ones.
Calibrate zero point A calibration of the instrument when the gas its zero
point (0.0% or 0ppm)
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