Technical data and dimensions
68
11 Technical data and dimensions
11.1 General
Databases of the leak detectors' technical characteristics Pfeiffer Vacuum:
● Technical characteristics according to:
– AVS 2.3: Procedure for calibrating gas analyzers of the mass spectrometer type.
– EN 1518: Non-destructive testing. Leak testing. Characterization of mass spec-
trometer leak detectors.
– ISO 3530: Methods of calibrating leak-detectors of the mass-spectrometer-type
used in the field of vacuum technology
● Zero funtion or suppression background activated, in standard conditions (20 °C,
5 ppm
4
He ambient, degassed detector).
● Acoustic pressure level: distance in relation to the detector 1 m.
11.2 Technical data
11.3 Units of measurement
Conversion table: pressure units
Parameter ASM 340 Wet Model ASM 340 Dry Model
Flange (in) DN 25 ISO-KF DN 25 ISO-KF
Pumping speed for He 2.5 l/s 2.5 l/s
Backing pump capacity 15 m
3
/h 3.4 m
3
/h
Start-up time (20°C) without calibration ~ 3 min ~ 3 min
Noise level 52 dB (A) 52 dB (A)
Protection category IP 20 IP 20
Power consumption max. 850 W 600 W
Operating temperature (Hard Vacuum test) 0-45 °C 0-35 °C
Operating temperature (Sniffing test) 0-35 °C 0-35 °C
Maximum inlet test pressure 25 hPa 25 hPa
Weight 56 kg 45 kg
Detectable gases
4
He,
3
He, H
2
4
He,
3
He, H
2
Test method Vacuum and sniffing leak
detection
Vacuum and sniffing leak
detection
Minimum detectable leak rate for helium (sniffing leak detection) 5 · 10
-10
Pa m
3
/s 5 · 10
-10
Pa m
3
/s
Minimum detectable leak rate for helium (vacuum leak detection) 5 · 10
-13
Pa m
3
/s 5 · 10
-13
Pa m
3
/s
Supply 110-130 V, 50/60 Hz 90-240 V, 50/60 Hz
200-240 V, 50/60 Hz
mbar bar Pa hPa kPa Torr
mm Hg
mbar 1 1 · 10
-3
100 1 0.1 0.75
bar 1 · 10
3
11 · 10
5
1000 100 750
Pa 0.01 1 · 10
-5
1 0.01 1 · 10
-3
7.5 · 10
-3
hPa 1 1 · 10
-3
100 1 0.1 0.75
kPa 10 0.01 1000 10 1 7.5
To rr
mm Hg
1.33 1.33 · 10
-3
133.32 1.33 0.133 1
1 Pa = 1 N/m
2
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