VS Series Helium Mass Spectrometer Leak Detectors
DRAFT 4/23/15
C-1
Appendix C. Specifications
C.1 Specifications
The specifications for the leak detector are provided in Table C-1.
Table C-1 Leak Detector Series Specifications
Specifications VS Series Helium Mass Spectrometer Versions
Pumps Rotary Vane Dry Scroll
Fore Pump Type
Pump Speed,
l/min, 60/50 Hz
DS-42 DS-302 TS-620 IDP-15 IDP-3
45/38 285/237 500/420 250/210 60/50
Minimum Detectable Leak,
atm-cc/sec
5 x 10
12
Internal Pump Version DS-42/IDP-3
Tur bo Molecula r Pu mp Navigator™ Turbo molecular pump specifically designed for leak detection
Leak Units atm-cc/sec, mbar-l/sec, torr-l/sec, Pa-m
3
/sec, std. ft
3
/year
Peak Pumping Speed
❑ Contra w/ DS42 – 0.5 l/sec for N
2
and He at 60Hz in Contra (.42 l/sec @ 50Hz).
❑ Contra w/ DS302 – 3.0 liters/sec for N
2
and He at 60Hz (2.5 l/sec @ 50 Hz).
❑ Contra w/ TS620 – 6.0 liters/sec for N
2
and He at 60Hz (5.0 l/sec @ 50 Hz).
❑ Contra w/IDP-3 - 6.0 l/sec (60 Hz), 5.0 l/sec (50 Hz)
❑ Midstage – 1.8 liters/sec for He at 50 or 60 Hz.
Helium Response Time 0.5 second, within 66% of peak reading within the given time. Per AVS 2.1.
Test Port NW-25; A 1
1
/
8
" (28 mm) ID Compression Port is available as an accessory.
Recommended Operating Ambient Conditions
Installation Indoor use only. Altitude up to 2000 m (6,400’), Material Group III, POLLUTION DEGREE 2
according to EN61010-1 Standard, Class 1
Operating Temperature System: +12° C to +45° C (wet and dry pumps); Fore pump limited on the low ends and turbo
pump limited on the high ends.
Humidity Maximum relative humidity (HR) 90%
Heat Load
1000 W (+/- 5%)
Air Pressure 563 Torr (75 kPa) to 795 Torr (106 kPa)
Maximum system
vibration
3 G’s (Turbo Limit)
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