Vega DSGH - Periodic Standardization

50 DSGH Installation and Operation Guide
Calibration
3 Calculating the calibration
Procedure 3.6: To calculate the calibration
Repeating the calibration
Typically, the system requires only periodic standardization to compensate
for drifts over time.
However, these events require you to repeat the calibration:
• Measurement of a new process application (contact VEGA for
recommendation)
• Process requires a new measurement span
• Entering a new measurement span setting into the software
• Installing a new radiation source holder
• Moving the gauge to another location
• Changes to pipe size, schedule, or any other change in process piping
• Excessive buildup or erosion of pipe that standardization cannot
compensate for (check standardize gain)
• Standardize gain > 1.2 after a standardization, indicating it made a 20%
adjustment from the previous calibration
Periodic standardization
Standardization adjusts the system by resetting one point of the calibration
curve to an independently measured or known sample.
The frequency of standardization depends on several factors, including the
reading’s accuracy.
1. Select Calibration | 2 Point Calibration.
2. Click Calculate Results.
3. Click OK.
4. Click OK.