Calibrating The Gc For The First Time - Emerson Rosemount 370XA System Reference Manual

370XA Gas Chromatograph
APRIL 2014
5.
6.
NOTICE
If the calibration gas certificate does not list the uncertainty percentages, enter the
default value of 2.
7.
8.
NOTICE
The GC calculates the energy content using the C6+ ratio configured in the GC at
the factory. Because the energy content data on the calibration certificate is typically
calculated using the energy value of the actual components in the mixture, there
may be a difference between the GC's energy values and the calibration certificate's
energy values. If the values don't match, enter the calculated values from the GC to
ensure the energy value check during the calibration runs will not cause nuisance
alarms.
9.
For other configuration settings, refer to the Advanced Configuration
section.
3.14.11

Calibrating the GC for the first time

1.
2.
NOTICE
The Current PWM shows the percentage of time power is applied to the heater.
Values under 40 indicate a stable temperature has been reached. If a stable
Press the enter key. The Uncertainty % screen displays.
Enter the uncertainty values from the calibration gas' certificate
into the appropriate fields on the Uncertainty % screen.
Press . The Cal Gas Certificate CV screen displays.
Enter the Cal Gas Certificate CV and CV Check Deviation
values from the calibration gas' certificate.
Press .
Display the Heater screen.
Confirm that the Temperature for Heater 1 matches the
Setpoint and the Current PWM is less than 40. If not, see the
troubleshooting section.
System Reference Manual
7P00370-H01
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