backing pump

backing pump

[′bak·iŋ ‚pəmp]
(mechanical engineering)
A vacuum pump, in a vacuum system using two pumps in tandem, which works directly to the atmosphere and reduces the pressure to an intermediate value, usually between 100 and 0.1 pascals. Also known as fore pump.
References in periodicals archive ?
ULVAC released the HELIOT 900 series leak detectors in June 2014 with backing pump up to 250/300 (50 Hz/60 Hz) L/min).
The overall long-term maintenance on the system was greatly reduced versus the mass spectrometer vacuum system because the Falcon Leak Test System does not have a vacuum chamber, a chamber vacuum pump, a mass spectrometer instrument, or a backing pump for the mass spectrometer.
It combines a high-performance wide-range turbomolecular pump with a dual-stage oil-free backing pump, and a power supply in one compact package.
ULVAC launches the ceramic ball bearing turbo molecular pump, UTM300B, in addition to the existing line-up, small size pivot bearing type, medium and large size magnetic levitation turbo molecular pumps, to meet to the requirements such as free mounting orientation, more compact design, smaller size backing pump, etc in the trend of diversified applications of turbo molecular pumps.
Varian is the only company that offers a fully dry, compact turbo pumping system with all the advantages of having a scroll rather than a diaphragm backing pump," said Sergio Piras, Senior Vice President, Vacuum Technologies, Varian, Inc.
ULVAC developed this leak detector to address the vacuum industry requirement for a portable, helium leak detector that uses a dry backing pump in place of the traditional oil sealed, rotary vacuum pump.
Acquisition of a gas chromatograph coupled to a single quadrupole mass spectrometer and accessories (automatic injector Split / Splitless, capillary column, source chemical ionization, electron impact source, backing pump, turbo molecular pump for high vacuum, computer and data acquisition software, NIST spectral library).
Tenders are invited for Purchase of Turbomolecular Pumping Station with Dry Scroll Backing Pump.
Tenders are invited for Supply Of Turbomolecular Pump With Dry Backing Pump, Turbo Controller And Display Control Unit As Per Specification Enclosed To Purchasers Tender Document.
Tenders are invited for Supply, Installation, Commissioning And Guarantee Of Turbo Molecular Pump, Backing Pump, Gate Valve And Accessories For Lehipa Power Couplers And Accessories As Per Purchasers Tender Specification.
A unit of ICP-MS with MS / MS function including all necessary to operate auxiliary equipment (coolers, backing pump, sample introduction system, autosampler, gas cleaning) including the necessary control and evaluation software, the MS / MS function on a triple must be Quadrupole mass spectrometer.
Part Description: Safety Isolation Valve, DN 25 Connection, Designed between Backing Pump and Turbo, in case of power failure, 115V, Aluminum and SS, 50/60HZ, 500,000 cycles