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5.10.2 Universal Gas Run Commands
The three parameters and three check boxes on the left side of each stream tab refer to all of
the gas runs types for that particular stream:
•
Gain Factor -
the parameter that relates the rate of stain on the tape to an actual
concentration. This value is determined during analyzer calibration with a known standard.
•
Zero Offset
- the value that is subtracted from all concentration readings to give corrected
readings. Zero offset is obtained by running the ‘Zero’ stream, which is usually run on a gas
that contains no phosgene, such as pure nitrogen.
•
Analysis Units
field - allows the user to change the units that are displayed on the screen.
This can be PPM, PPB, Mol%, or any other unit the user chooses. Please note that
changing the value in this field does NOT change the calibration of the analyzer - if the user
wishes to change the calibration of the unit to be in a different unit, they must use a
calibration gas with a known concentration in the unit they wish to display.
•
Cal. Correction Enable
check box
-
used to indicate that the calibration run is used to
change the gain factor. If this box is not checked, then the calibration run is essentially
another reference run.
•
Zero Correction Enable
check box - used to indicate if the zero gas run to change the zero
offset. If this box is not checked off then the zero run is essentially another reference run.
•
Timed Analysis Enable
check box - used to indicate that the Peak Detect method of
analysis should be disabled and Timed Analysis method should be enabled. The method of
analysis used is determined by the application requirements and set at the factory.
5.10.3 The Sample Tab
The
Sample
tab is used to enter relevant information about the analysis of these gases. The
tabs include the common gas run parameters described in Section 5.10.2 and the following
parameters and settings.
5.10.3.1 Timing Commands
The
Timing
commands (Figure 5-21) relate to various timing issues and miscellaneous issues
that relate to operation of the system.
Figure 5-21: Timing Commands
•
Time Check Box
- When the
Time
check box is checked, the operator can perform a run as
defined by the Frequency section of the gas run type tab below. If the Time check box is not
checked , the gas run will not start without being configured in the Sequence or Timers
Tabs or a via a manual initiation by clicking on the gas run type button such as the
Sample
button.
•
Stream 1 Sample
- Initiates a run using the indicated parameters.
Summary of Contents for ProTech903W
Page 8: ...Revision 1 8 9 10 2019...
Page 109: ...Revision 1 109 9 10 2019 Figure 5 34 Create Modbus List Dialogue Box...
Page 112: ...Revision 1 112 9 10 2019 Figure 5 36 Typical Modcon with Floating Point List...
Page 141: ...Revision 1 141 9 10 2019 Figure 6 18 Status Tab...
Page 171: ...Revision 1 171 9 10 2019...
Page 172: ...Revision 1 172 9 10 2019 Section 13 MSDS Information...