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  • BSI
    BS ISO 21360-4:2018 Vacuum technology. Standard methods for measuring vacuum-pump performance - Turbomolecular vacuum pumps
    Edition: 2018
    $313.97
    / user per year

Description of BS ISO 21360-4:2018 2018

This document, in conjunction with ISO 21360‑1, specifies methods for the measurement of performance characteristics of turbomolecular vacuum pumps. It is applicable to all sizes and all types of turbomolecular vacuum pumps, including those

  • with mechanical or magnetic bearings;

  • with or without an additional drag stage(s) or other pumping stages on the shaft;

  • with one or more inlet ports.

Since turbomolecular vacuum pumps are backed by primary pumps, their performance cannot be completely defined by the volume flow rate curve. Also, the driving device and the backing pressure of the turbomolecular vacuum pump is important to the performance.

The following completes the performance characteristics:

  • information about throughputs and backing pressure of the turbomolecular vacuum pump;

  • the compression ratio curve (compression ratio vs backing pressure of turbomolecular vacuum pump).



Standard NumberBS ISO 21360-4:2018
TitleVacuum technology. Standard methods for measuring vacuum-pump performance - Turbomolecular vacuum pumps
StatusRevision Underway
Publication Date2018-08-23
Identical National Standard OfISO 21360-4:2018
DescriptorsVacuum pumps, Vacuum measurement, Pressure measurement (fluids), Volume measurement, Pumps, Flow measurement, Test equipment, Compression ratios, Mathematical calculations, Measurement characteristics, Vacuum engineering, Performance testing
ICS23.160 Vacuum technology
CommitteeMCE/8/-/4
ISBN978 0 580 92047 9
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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