Operation And Maintenance; Warning And Notice; Start A 2-Point Calibration - Emerson Rosemount 700XA Reference Manual

Reference Manual
2-3-9000-744
5

Operation and maintenance

5.1

Warning and notice

WARNING
Precautionary signs
Failure to observe precautionary signs may result in injury or death to personnel or cause
damage to equipment.
Observe and comply with all precautionary signs posted on the device.
NOTICE
Failure to follow this notice can result in damage to the card.
Turn off the device before removing a card from the card cage assembly.
5.2

Start a 2-point calibration

The 2-point calibration process calculates an exponential power fit that the gas
chromatograph (GC) uses to accurately analyze a sample stream with a flame photometric
detector (FPD).
Prerequisites
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-point (2-Pt) exponential power fit by doing a single-level calibration
on these individual LCG and HCG streams.
Procedure
1. Start Rosemount MON2020 and press F6 to open the Component Data window.
2. Change the Calib Type for the target component to 2 pt Calib.
3. For the target component, select the component data table (CDT) that is associated
4. For the target component, select the CDT that is associated with the HCG from the
5. Run a single stream analysis on the stream associated with the LCG until the
6. Run a forced calibration on the stream associated with the LCG.
7. Run a normal calibration on the stream associated with the LCG.
Rosemount 700XA
with the LCG from the 2 Pt Calib High CDT drop-down list.
2 Pt Calib High CDT drop-down list.
readings stabilize.
Operation and maintenance
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