Panametrics Aurora H2O, User Manual

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Chapter 4. Programming Advanced Features
24 Aurora H2O User’s Manual
4.8 User Calibration (cont.)
Apply the Span gas, and wait for the Aurora H2O reading to stabilize.
When the reading is stable, select Read Span . The Aurora H2O uses the current measurement, and immediately
calculates the new calibration. If the calculated values are determined to be valid, the Aurora H2O will display
“Calibration OK” and prompt you to Save the results, or Cancel . If the values are not valid, the Aurora will display “Calibration
*FAILED* ”, and prompt you to continue. On a cal failure or Cancel , no change is made to the User Calibration values.
The CH4 Offset and CH4 Scalar items can be used to view or modify the calculated
calibration points, if desired.
Note: The default values for the
CH4 Offset
is 0.0 and the
CH4 Scalar
is 1.0. These defaults
are NOT the same as the
Factory Calibration
! Making the
User Cal
active without
performing the actual calibration will adversely affect the accuracy of the Aurora H2O . If there is any doubt
about the quality/accuracy of the gases used, the Aurora H2O should be returned to the
Factory
calibration
using the
Status
item.
4.9 Service Settings
CAUTION!
The Service Settings Menu should be used by factory-trained personnel only.