Vapour vacuum pumps — Measurement of performance characteristics — Part 2: Measurement of critical backing pressure
NORMA vydána dne 30.11.1989
Označení normy: ISO 1608-2:1989-ed.2.0
Datum vydání normy: 30.11.1989
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: 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 be 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.