WA-5F Optical Calibration with slope correction

WA-5F Optical Calibration with slope correction

Adjusting the sensitivity of the optical system


* Because this adjustment needs to be made when the system is in normal condition, ensure
to conduct overhaul work (cleaning or replacing the primary side line of the optical system)
in advance.

1) After one hour has passed since the system is turned on, open the Maintenance screen.
Then select [Parameter 2] tab and click [Optical Adjust] in AFS settings. Enter Passcode "0219" if required.



2) Click [SPAN] in Ref settings to automatically adjust the voltage of the Ref detector to 4.0V.



3) Enter 0.1 in the Sig field on the lower right to temporarily set the voltage of the Sig detector to 0.1V.



4) Take about 2.0 ng (of the standard gas) from the MB-1 and carry out measurement to check the slope of the calibration curve (PEAK analysis) in LOW mode. If the slope of the calibration curve is outside the allowable range of 6E+00 – 8E+00, change or enter a D.P value of between 20 and 120 in the SPAN field of the Sig settings so that the slope of the calibration curve falls within the allowable range.
* The D.P setup value is proportional to the slope of the calibration curve.



Check your calibration point again, and repeat steps if necessary.

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