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Technical Information
3
Connect the Power Probe to the mass flow meter.
4
Connect the mass flow meter RS232 serial port cable to the leak detector serial
port located in the back of the unit.
5
Place system into Test and ensure the test port pressure adjusted between
5E-1 Torr 1 Torr (750 mTorr preferred).
6
Perform an internal calibration.
7
Perform an external calibration using the sniffing probe (see the following
figure) by:
a. Selecting Calibration > Calibrate With > External Leak.
b. Entering the value of the external calibrated leak. Keep the probe at the inlet
c. Pressing Calibrate. The system performs an instant calibration in 2
Figure 50 External Sniff Calibration Setup
8
Select Test Configurations > Applications Setup.
9
Select PPM Sniff Method > Application Setup.
10 Select the MFM option.
11 Select Serial Port - This establishes RS232 communication between the MFM
and the leak detector.
The Calibration button on the PPM Sniff application is only to calibrate using a
NOTE
known PPM mixture.
The leak detector is now ready to measure the concentration of Helium in PPM.
104
of the standard leak.
seconds.
Agilent Helium Leak Detector User Manual
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