INFICON Sensistor Sentrac Hydrogen Leak Detector - Manual (Page 37)

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8.2 Settings
8.2.1 How To Locate Leaks
In Locating Mode, the signal is displayed in the form of a bar. The length of the bar
varies with the gas concentration.
This mode gives an audio and visual signal which increases as a leak is approached (a
higher gas concentration) and decreases as the probe is moved away from the leak.
1 Click the Locating Mode icon on the Operation Screen.
2 Set up a calibration leak which corresponds to the smallest leak you want to detect.
For more information see Chapter 10 “Calibration” on p. 47.
3 Put the probe close to the calibration leak and note the approximate reaction you
get (no reaction, small, medium, high, full scale) within the first few seconds.
4 Click the Sensitivity icon on the Operation Screen and set the Sensitivity.
Notice The operation in Locating Mode is not quantitative, therefore, there is no
actual calibration to be done, but rather a setting of the sensitivity.
If Locating Mode is used and the alarm function is required to be activated
at a particular calibrated level, the unit must be calibrated according to the
instructions below.