Agilent Varian 979 - REBUILT

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Agilent Varian 979 Mass Spectrometer Helium Leak Detector - REBUILT

The Model 979 is a wide-range helium mass spectrometer leak detector. It is comprised of a turbomolecular high vacuum pump, spectrometer tube, valve block, Vacuum Technologies’ Platform leak detector electronics, and an operator interface in a stylish, yet rugged housing. The 979 is available as a stand-alone, bench-mount unit or as a single or dual, dry or oil sealed mechanically pumped leak testing station on a cart. Featuring a multi-flow mode vacuum system, high sensitivity is combined with the ability to start leak testing at quickly achieved pumpdown pressures. The Agilent Varian MacroTorr turbo pump allows the 979 to perform quantitative, high sensitivity testing at high test pressures.

  • Helium sensitivity range 10-5 to 10-10 atm-cc/sec range
  • Automatic with touch screen interface
  • Operable in evacuation and sniffing modes

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System sensitivity Standard sensitivity High sensitivity
High vacuum pump type, Air-cooled, maintenance-free Vacuum Technologies turbomolecular pump
Rough / fore pump Wet (Oil-sealed) Dry (TriScroll) Wet (Oil-sealed) Dry (TriScroll)
Rough pump type - SD-451 - TS-620 - SD-451 - TS-620
Free air displacement l/min, 60/50 Hz - 410/342 - 500/420 - 410/342 - 500/420
Fore pump type DS-302 TS-620 TS-320 DS-302 TS-620 TS-320
Free air displacement, l/min, 50/60 Hz 285/237 285/237 500/420 250/210 285/237 285/237 520/420 250/210
Minimum detectable leak, atm-cc/sec 5 x 10-10 5 x 10-11
Leak units atm-cc/sec, mbar-l/sec, Torr-l/sec, Pa-m3/sec
Response time Less than 0.5 second, in accordance with AVS Standard 2.1.
Amplifier drift Less than 5% of full scale of the most sensitive range, in accordance with AVS Standard 2.1.
Noise level Less than 5% of full scale, peak-to-peak, in accordance with AVS Standard 2.1.
Calibration Fully automated tuning and calibration using the internal or external calibrated leak. The fast calibrate feature allows the standard version to calibrate in less than 20 seconds and the high sensitivity version to calibrate in less than 1 minute.
Zero control Selectable mode background elimination with unique AUTOZERO < 0 feature.
Leak indication A 50-segment bar graph (linear or log) indicator displays leak rates automatically; alphanumeric indication on LCD display. A leak can also trigger an audible alarm frequency that varies in proportion to the size of the leak, dedicated volume control and programmable audio threshold. Analog voltage is proportional to the leak rate.
Pressure indication Test port and spectrometer pressure bar graph displays and test port pressure alphanumeric indication on LCD display.
Spectrometer tube Sensitivity optimized design, header mounted ion source with dual thoria-coated iridium filament, preamplifier, ConvecTorr® and vacuum gauge.
Automatic valve sequencing Microprocessor-controlled valve operation provides automatic system cycling.
Safety interlocks A valve system design that completely protects the high-vacuum system under test against pressure surge and power interruption.
Cycle time Blanked port can be cycled to the fine leak test in 4 seconds. An auto sequencer feature provides clear accept/reject signals and allows programming of a complete test cycle (START/ROUGH/TEST/VENT).
Test port NW25; A 118" (28 mm) ID Compression Port is available as an accessory.
Remote I/O capabilities Interface (DB-37S) with optically isolated (5-24 VDC) outputs and inputs, Non-isolated Serial RS-232 interface, and Non-isolated Analog output (0-10 V). Non-isolated Remote Control (DB-9S) interface.
Accessories (optional) Universal Remote (part # L9558301) with 25 foot cord, External Calibrated Leak, and Power Probe.
Recommended operating ambient conditions
Installation Indoor use only. Altitude up to 2,000 m (6,400 feet). Installation (Overvoltage) Category II, Pollution Degree II according to UL3101-1 Standard
Temperature +12°C (54°F) to +40°C (104°F) for Wet Version (w/ oil-sealed mechanical pumps)
+5°C (41°F) to +40°C (104°F) for Dry Version (w/ TriScroll mechanical pumps)
Humidity Maximum relative humidity (HR) 80% for temperatures up to +31°C (88°F) decreasing linearly to 50% HR at +40°C (104°F). No hoarfrost, dew, percolating water, rain, solar irradiation, etc.
Air pressure 75 kPa (563 Torr) to 106 kPa (795 Torr)
Storage ambient conditions Relative humidity: 0% to 95%, non-condensing. Temperature: -20°C (-4°F) to +60°C (140°F)
Power requirements 100 VAC, 20 A, 50 Hz / 115 VAC, 20 A, 60Hz or 230 VAC, 20 A, 50/60 Hz. Start-Up current for “Wet” version up to 85 A peak for up to 10 seconds at temperature less then 20°C (68°F).
Note: 1. Input voltage cannot be modified by customer
Note: 2. No extension cord can be used.
Specifications 979 Helium Mass Spectrometer Versions
EMC 89/392/EEC Directive; EN61326:1997.
Weight 50 lb. (23 kg) net - stand-alone, bench-mount unit. / 180 lb. (82 kg.) net - wet 1-pump 979 version with DS-302 oil-sealed pump on a two wheel cart. / 243 lb. (111 kg) net - wet 2-pump 979 version with
DS-302 and SD-451 oil-sealed pumps on a four-wheel cart.
Type Label Description Download
Varian 979 Series - REBUILT Operations Manual Download

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Agilent Varian 979 Mass Spectrometer Helium Leak Detector - REBUILT