BS ISO 6358-2:2019 - Pneumatic fluid power. Determination of flow-rate characteristics of components using compressible fluids. Alternative test methods

BS ISO 6358-2:2019

Pneumatic fluid power. Determination of flow-rate characteristics of components using compressible fluids. Alternative test methods

Status : Current   Published : September 2019

Format
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HARDCOPY



This document specifies a discharge test and a charge test as alternative methods for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow passages that can be either fixed or variable in size to determine their flow-rate characteristics. However, this document does not apply to components whose flow coefficient is unstable during use, i.e. components that exhibit remarkable hysteretic behaviour (because they can contain flexible parts that deform under the flow) or that have an internal feedback phenomenon (such as regulators), or components that have a cracking pressure such as non-return (check) valves and quick-exhaust valves. In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators.

NOTE

This document does not provide a method to determine if a component has hysteretic behaviour; ISO 6358-1 does provide such a method.

Table 1 provides a summary of which parts of the ISO 6358 series can be applied to various components.

Table 1
Application of the ISO 6358 series test methods to components

[This table has been removed.]

The charge test cannot be performed on components that do not have downstream port connections.

This document specifies requirements for the test installation, the test procedure, and the presentation of results.

Evaluation of measurement uncertainties is described in Annex A. Requirements for a method to test the volume of an isothermal tank are given in Annex B. Guidance on the isothermal tank is given in Annex C. Requirements for a method to test isothermal performance are given in Annex D. Guidance on the formula for calculating characteristics is given in Annex E. Guidance on calculating flow-rate characteristics is given in Annex F.




Standard NumberBS ISO 6358-2:2019
TitlePneumatic fluid power. Determination of flow-rate characteristics of components using compressible fluids. Alternative test methods
StatusCurrent
Publication Date16 September 2019
Normative References(Required to achieve compliance to this standard)ISO 5598, ISO 6358-1, ISO 1219-1
Informative References(Provided for Information)ISO/IEC GUIDE 98-3:2008 Ed 1, ISO 5725-2, ISO 21748
ReplacesBS ISO 6358-2:2013
International RelationshipsISO 6358-2:2019
Draft Superseded By19/30374966 DC
DescriptorsErrors, Fluid equipment components, Fluid equipment, Grades (quality), Pneumatic transmission systems, Test equipment, Formulae (mathematics), Flow measurement, Testing conditions, Accuracy, Flow rates, Compressible flow, Pneumatic equipment
ICS23.100.01
Title in FrenchTransmissions pneumatiques. Détermination des caractéristiques de débit des composants traversés par un fluide compressible Méthodes d'essai alternatives
CommitteeMCE/18/-/5
ISBN978 0 539 00327 7
PublisherBSI
FormatA4
DeliveryYes
Pages50
File Size3.786 MB
Price£240.00


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