Revision 4
86
12/15/2018
7.4
Determining if the Chromatograph is Functioning in an Acceptable Manner
There are a number of values that can be checked to see if the system is functioning
properly:
a) Compare the results of the analysis of the calibration gas to the certified value of the
calibration gas. Typically the value for each component should agree to within the
tolerances shown in Table 7-2.
Table 7-2: Typical Allowed Deviation
Component Concentration
Allowed Deviation (ASTM 1945)
0 – 0.01 %
+/- 0.01 %
0.01 – 1 %
+/- 0.04 %
1 – 5 %
+/- 0.07 %
5 – 10 %
+/- 0.08 %
10 – 100%
+/- 0.10%
b) Review the un-normalized total reported by the system for the Reference Gas. Typically
the un-normalized total for the calibration gas should be within 98% to 102%. If the un-
normalized total is not within tolerance, it is possible that the peaks are not being
integrated properly due to a shift in the retention time of one (or more) components.
c) Review the calculated heating value of the calibration gas as analyzed by the
chromatograph with respect to the theoretical heating value of the calibration gas. The
calculated heating value should typically be /- 0.25 BTU.
Summary of Contents for AccuChrome MA2963
Page 21: ...Revision 4 8 12 15 2018 Figure 2 7 The Intrinsically Safe Barrier ...
Page 24: ...Revision 4 11 12 15 2018 Figure 2 10 4 Minute Analysis Flow Diagram ...
Page 58: ...Revision 4 45 12 15 2018 Figure 4 24 Chart Commands ...
Page 65: ...Revision 4 52 12 15 2018 A sample report is shown in Figure 4 32 Figure 4 32 Sample Report ...
Page 80: ...Revision 4 67 12 15 2018 Figure 5 10 Streams Setup ...
Page 104: ...Revision 4 91 12 15 2018 Figure 8 2 Enron Mode Short Integers ...
Page 140: ...Revision 4 127 12 15 2018 ...
Page 141: ...Revision 4 128 12 15 2018 15 2 Valve Maintenance Instructions ...
Page 142: ...Revision 4 129 12 15 2018 ...