C 303
External calibration of the leak detector
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Sniffing mode
Hard vacuum mode
Target value (*)
adjustment
manually
automatically
Adjustment
C C 304
COR
(*) The target value is the desired value to be displayed on the digital
display at the end of the calibration..
The target value can be memorized following 2 methods:
•
the operator enters directly the target value,
•
the target value is automatically calculated by the leak detector
.
About sniffing test mode In sniffing test mode, the calibration can be performed with:
•
the ambient atmosphere,
•
an external calibrated leak,
•
a container or installation, at atmospheric pressure,
filled with a known gas mixture including Helium.
The sniffer probe will be exposed to one of the 3 items
listed above (3rd one represents the most reliable and accurate way
of calibrating a leak detector in sniffing mode).
The lst and 2nd ones are the most common and practical methods.
Before using one of the 2 items, connect the sniffer probe to the sniffer
port of the leak detector.
Содержание ASM 142
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