Convert Swiss francs (CHF) to your currency. This document specifies three methods for measuring the volume flow rate and one method each for measuring the base pressure, the compression ratio, and the critical backing pressure of a vacuum pump.

ISO 21360-1:2020(E) Introduction This document is a basic standard for measuring the performance data of vacuum pumps. The methods specified here are well known from existing national and International Standards. In developing this document, the aim has been to provide a single document containing the measurements of performance

This part of ISO 21360 specifies three methods for measuring the volume flow rate and one method each for measuring the base pressure, the compression ratio, and the critical backing pressure of a vacuum pump.

This document specifies methods for measuring the volume flow rate, maximum throughput, pumping capacity, base pressure cryogenic vacuum pump, cooldown time and crossover value of cryogenic vacuum pumps. It is applicable to two-stage, closed-loop gaseous helium cryogenic vacuum pumps, which can be directly flanged to a vacuum chamber.

This second edition cancels and replaces the first edition (ISO 21360-1:2012), of which it constitutes a minor revision. The changes compared to the previous edition are as follows: The changes compared to the previous edition are as follows:

ISO 21360-6:2023(en) Vacuum technology ? Standard methods for measuring vacuum-pump performance ? Part 6: Cryogenic vacuum pumps. Buy. Follow. Table of contents. Foreword. Introduction. 1 Scope. 2 Normative references. 3 Terms …

This document complements ISO 21360-1, which provides a general description of the measurement of performance data of vacuum pumps. The methods described here are well known from existing national and International Standards.

This document specifies three methods for measuring the volume flow rate and one method each for measuring the base pressure, the compression ratio, and the critical backing pressure of a vacuum pump.

This document specifies methods for measuring the volume flow rate, base pressure, water vapour tolerance, power consumption, and the lowest start-up temperature of positive displacement vacuum pumps, which discharge gas against atmospheric pressure and with a usual base pressure <10 kPa.

It applies to mechanical booster vacuum pumps employed for medium vacuum or rough vacuum applications including gas-cooled mechanical booster vacuum pump and multiple mechanical booster vacuum pump systems. It covers particular characteristics of mechanical boosters that are different from those of the usual positive displacement vacuum pumps.