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4 Operation and maintenance
4.1 Warning and precautions
WARNING!
Observe all precautionary signs posted on the 700XA. Failure to do so can result in injury or
death to personnel or cause damage to the equipment.
CAUTION!
Turn off GC before removing a card from the card cage assembly. Failure to do so can result in
damage to the card.
4.2 Start a two-point calibration
The 2-Point Calibration process calculates an exponential power fit that the GC uses to
accurately analyze a sample stream with a Flame Photometric Detector (FPD). The 2-Point
Calibration process requires two calibration gases that will be used to generate the data for
the exponential power fit calculation. While both calibration gases should have the same
components, one of the calibrations gases, called the low calibration gas (LCG) should have
a lower concentration of the components than the other calibration gas, which is called
the high calibration gas (HCG). The GC can then compute the coefficients for the 2 Pt
exponential power fit by doing a single-level calibration on these individual LC and HC
streams.
1. Start MON2020 and press F6 to open the Component Data screen.
2. Change the Calib Type for the target component to 2 pt Calib.
3. For the target component, select the CDT that is associated with the LCG from the 2
Pt Calib Low CDT drop-down list.
4. For the target component, select the CDT that is associated with the HCG from the 2
Pt Calib High CDT drop-down list.
5. Run a Single Stream analysis on the stream associated with the LCG until the
readings stabilize.
6. Run a Forced Calibration on the stream associated with the LCG.
7. Run a Normal Calibration on the stream associated with the LCG.
8. Run a Single Stream analysis on the stream associated with the HCG until the
readings stabilize.
9. Run a Forced Calibration on the stream associated with the HCG.
10. Run a Normal Calibration on the stream associated with the HCG.
Operation and maintenance
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Operation and maintenance
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