Table of Contents
Advertisement
Technical Information
PPM (parts per million) Sniff Method
Certain test protocols specify parts per million (PPM) units for measuring leak rates. This
test method is only to be used with a suitable sniffer probe, it is not intended for vacuum
leak testing. Settings available and features in this mode include:
Setting the value of helium concentration to be used for calibration.
Step-by-step guidance to calibrate to a known concentration.
Using a mass flow meter (optional) for accurate measurement regardless of
pressure.
Entering set point values for audible and visual alarms.
Establishing an alarm should the sniffer probe become plugged.
Calibrate the leak detector prior to the PPM Sniff Application.
NOTE
To run this:
1
Select Test Configurations > Applications Setup.
2
Select PPM Sniff Method, press Set-Up and the following figure appears:
Figure 46 PPM Sniff Method
3
Ensure that the leak detector must be in Test and setup for a sniffing
application as shown in the following figure. The test port pressure appears in
the top left hand corner of the setup screen (see previous figure).
100
Agilent Helium Leak Detector User Manual
Advertisement
Table of Contents
