ISO 1608-2:1989

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Vapour vacuum pumps -- Measurement of performance characteristics -- Part 2: Measurement of critical backing pressure

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ISO 1608-2:1989

Vapour vacuum pumps -- Measurement of performance characteristics -- Part 2: Measurement of critical backing pressure

PUBLISH DATE 1989
ISO 1608-2:1989

The considered method of measurement deals with vapours jet vacuum pumps, diffusions pumps and diffusion-ejector pumps.

The dependence of the performance of these pumps on the backing pressure can only be completely described by means of a curve relating the inlet and backing pressure over the range of operation.

The recommended test dome and the principle of the test equipment are illustrated.

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