INFICON Sensistor ILS500 Leak Detection System - Manual (Page 58)

58 Calibration
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10 Calibration
10.1 About Calibration
It is important to have a correct calibration when measuring the size of a leak in
Measure Mode and Combined Mode.
There are two ways to calibrate the probe:
• Calibration gas (recommended)
Has a known concentration of hydrogen (10 ppm recommended).
• Calibration leak
Has a fixed leak rate (flow or g/y).
Both methods take less than 2 minutes to perform.
Calibration can be performed automatically for the Active Probes. For Hand Probes the
ILS500 will display a reminder when the system is due for calibration.
10.1.1 Required Equipment
• Calibration Gas (recommended) or Calibration Leak
• Relevant Certificate
For more information, see on page 99.
10.2 Calibration Overview
Click Settings >> Calibration to get to the three Calibration Setup menus.
Notice If calibration fails you can still use the instrument. Last valid calibration
parameters will be used. However, you should check that the instrument
reacts to the gas.
Calibration Settings
Calibration Value
Calibration Unit
Leak Gas
cc/s
Air
2.2E-05