The Varian 979 Helium Mass Spectrometer Leak Detector is a portable wide range leak detector. It is comprised of a turbomolecular high vacuum pump, spectrometer tube, valve block, leak detector electronics and an operator interface in a rugged housing. It can be used in sniff testing mode and evacuation mode with both standard and high sensitivity.
The Varian 979 is available as a standalone, bench-mount unit or as a single or dual, dry or oil sealed mechanically pumped leak testing station on a cart, using a rotary vane primary pump or dry scroll primary pump. Large external primary pumps allow for fast pump down times. It has a fully automated test cycle control, calibration, background suppression and protection from air-inrush and power failure.
Varian 979 Helium Leak Detector Features
- Fully automated tuning and calibration
- Touch screen interface
- 50 segment bar graph indicator displays leak rates automatically
- Minimum detectable leak – Standard Sensitivity is 5 · 10-10
- Minimum detectable leak – High Sensitivity is 5 · 10-11
- Response time less than .5 seconds
- Multi-flow mode vacuum system
Varian 979 Helium Leak Detector Applications
- Industrial Process Tools
- Power Generation
- High Energy Physics
- Research & Development
- Component Manufacturing
Varian 979 Helium Leak Detector Specifications
| Agilent Varian | Units | 979 Wet | 979 Dry |
|---|---|---|---|
| Configuration options | – | Bench/Mobile | Bench/Mobile |
| Primary pump type | type | Rotary vane pump | Dry scroll pump |
| Pump | model | DS-302 | TS-320 |
| Min detectable leak – standard | mbar l/s | ≤ 5 · 10-10 | ≤ 5 · 10-10 |
| Min detectable leak – high sensitivity | mbar l/s | ≤ 5 · 10-11 | ≤ 5 · 10-11 |
| Maximum test port pressure | Torr | 5 | 5 |
| Calibration Routine | type | Automatic | Automatic |
| Sensitivity ranges | mbar l/s | 10-5 thru 10-10 | 10-5 thru 10-10 |
| Cycle time | sec | 4 | 4 |
| Operating Temperature | celsius | 12° to 40° | 5° to 40° |
| Weight (stand alone) | kg | 22.7 | 22.7 |