Pfeiffer Vacuum ASM 340 - Calibrated Leak Settings

The bargraph display does not take into account the applied correction factor.
8.1.4 Calibrated leak settings
This menu is used to enter and view the settings of the calibrated leaks (see chapter “Calibration”).
►
Update these settings when changing or recalibrating a calibrated leak.
Access: Menu [Measurement] [Calibrated leak settings]
Choice - Setting limit
1)
Tracer gas To be selected
The tracer gas is the gas searched for during a test.
This is the gas contained in the calibrated leak used for calibration.
Helium 4
Mass 3
Hydrogen
Type To be selected
Type of calibrated leak used for calibration
● Internal: calibration based on the detector’s internal calibrated
leak
‘Hard vacuum’ test method only
●
External: calibration based on external calibrated leak (
4
He,
Mass 3 or H
2
leak).
● Concentration: calibration from a gas mixture for which the trac-
er gas concentration is known.
Sniffer test method only
Internal
External
Concentration
Unit To be selected
Unit of calibrated leak used for calibration
2)
mbar · l/s
Pa · m
3
/s
Torr · l/s
mTorr · l/s
atm · cc/s
sccm
sccs
ppm
3)
Leak value To be set
Value of calibrated leak used for calibration
2)
1 · 10
-18
– 1 · 10
+18
Loss per year (%) To be set
Set the loss per year for the calibrated leak used for calibration
2)
0 – 99
Reference temperature
(°C)
To be set
Reference temperature for the calibrated leak used for calibration
2)
0 – 99
Temperature coefficient
(%/°C)
To be set
Temperature coefficient for the calibrated leak temperature used for
calibration
2)
0.0 – 9.9
Date To be set
Month and year of calibration for the calibrated leak used for calibra-
tion
2)
Format: MM/YYYY
-
Type To be selected
Source of displayed temperature
● Internal: measured temperature by the internal calibrated leak
temperature sensor
● External: set temperature by the operator
Internal
Externeal
Internal Temperature
(°C)
(if internal ‘Type’)
Read only
Temperature of the detector’s internal calibrated leak
-
External Temperature
(°C)
(if external ‘Type’)
To be set
Configuration of external temperature
0 – 99
1) Initial setting: see chapter “Tree diagram to the Settings menu”
2) Use the information indicated on the calibrated leak used for calibration or on its calibration certificate.
3) If sniffer test method selected
Settings menu
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