BS ISO 6358-1:2013+A1:2020: Pneumatic Fluid Power Standard

Welcome to the comprehensive guide on the BS ISO 6358-1:2013+A1:2020 standard, a pivotal document for professionals in the field of pneumatic fluid power. This standard is essential for understanding the determination of flow-rate characteristics of components using compressible fluids, providing general rules and test methods for steady-state flow. Released on July 15, 2020, this document is a must-have for ensuring compliance and excellence in pneumatic systems.

Overview of the Standard

The BS ISO 6358-1:2013+A1:2020 standard is a critical resource for engineers and technicians working with pneumatic systems. It outlines the methodologies for determining the flow-rate characteristics of components that utilize compressible fluids. This standard is designed to ensure that components operate efficiently and effectively under steady-state flow conditions, which is crucial for maintaining the performance and reliability of pneumatic systems.

Key Features

• Standard Number: BS ISO 6358-1:2013+A1:2020
• Pages: 76
• ISBN: 978 0 539 01109 8
• Status: Standard

Importance of the Standard

Pneumatic systems are widely used in various industries, including manufacturing, automotive, and aerospace. The efficiency and safety of these systems depend heavily on the accurate determination of flow-rate characteristics. The BS ISO 6358-1:2013+A1:2020 standard provides a structured approach to testing and evaluating these characteristics, ensuring that components meet the necessary performance criteria.

By adhering to this standard, organizations can achieve several benefits:

• Enhanced Performance: Ensures components operate at optimal efficiency, reducing energy consumption and operational costs.
• Improved Safety: Provides guidelines that help prevent system failures and accidents, safeguarding personnel and equipment.
• Regulatory Compliance: Helps organizations meet industry regulations and standards, avoiding potential legal and financial penalties.

Detailed Content

The document spans 76 pages and is meticulously structured to cover all aspects of flow-rate determination. It includes detailed explanations of the test methods and general rules that must be followed to achieve accurate and reliable results. The standard is divided into several sections, each focusing on a specific aspect of flow-rate determination:

1. Introduction

This section provides an overview of the standard's purpose and scope, setting the stage for the detailed methodologies that follow.

2. Normative References

Lists the documents and standards that are referenced within the standard, providing a comprehensive framework for understanding the context and application of the methodologies described.

3. Terms and Definitions

Defines the key terms used throughout the document, ensuring clarity and consistency in the interpretation of the standard's requirements.

4. General Rules

Outlines the fundamental principles and guidelines that must be adhered to when conducting flow-rate tests, ensuring that results are consistent and reliable.

5. Test Methods

Describes the specific procedures and techniques for measuring flow-rate characteristics, including the equipment and conditions required for accurate testing.

6. Data Analysis

Provides guidance on how to analyze and interpret the data obtained from flow-rate tests, enabling users to make informed decisions based on the results.

Who Should Use This Standard?

The BS ISO 6358-1:2013+A1:2020 standard is indispensable for a wide range of professionals, including:

• Engineers: Design and optimize pneumatic systems to ensure they meet performance and safety standards.
• Technicians: Conduct tests and maintenance on pneumatic components to verify compliance with the standard.
• Quality Assurance Professionals: Ensure that products and systems adhere to industry standards and regulations.
• Regulatory Bodies: Develop and enforce standards and regulations for pneumatic systems.

Conclusion

The BS ISO 6358-1:2013+A1:2020 standard is a comprehensive and authoritative resource for anyone involved in the design, testing, and maintenance of pneumatic systems. By providing clear guidelines and methodologies for determining flow-rate characteristics, this standard helps ensure that pneumatic components operate safely and efficiently. Whether you are an engineer, technician, or quality assurance professional, this standard is an essential tool for achieving excellence in pneumatic fluid power systems.

BS ISO 6358-1:2013+A1:2020

This standard BS ISO 6358-1:2013+A1:2020 Pneumatic fluid power. Determination of flow-rate characteristics of components using compressible fluids is classified in these ICS categories:

• 23.100.01 Fluid power systems in general

This part of ISO 6358 specifies a steady-state method for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow paths that can be either fixed or variable in size, to determine their flow-rate characteristics. However, this part of ISO 6358 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). In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators, etc.

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

Table 1

Application of ISO 6358 test methods to components

Components		Constant upstream pressure test		Variable upstream pressure test
		ISO 6358‑1 constant upstream pressure test	ISO 6358‑2 charge test	ISO 6358‑1 variable upstream pressure test	ISO 6358‑2 discharge test
Group 1	Directional control valves	yes	yes	yes	yes
	Flow control valves	yes	yes	yes	yes
	Connectors	yes	yes	yes	yes
	Valve manifolds	yes	yes	yes	yes
	Group of components	yes	yes	yes	yes
Group 2	Filters and lubricators	yes	no	no	no
	Non-return (check) valves	yes	no	no	no
	Tubes and hoses	yes	no	no	no
Group 3	Silencers and exhaust oil mist separators	no	no	yes	yes
	Blow nozzles	no	no	yes	yes
	Quick-exhaust valves	no	no	yes	yes
	Cylinder end heads	no	no	yes	yes

This part of ISO 6358 specifies requirements for the test installation, the test procedure, and the presentation of results for the steady-state method.

This part of ISO 6358 includes several test procedures, including the one described in Annex A, which is from ISO 6358:1989. Flowmeter calibration is described in Annex B. Evaluation of measurement uncertainties is described in Annex C. Observations of the error in the test results are described in Annex D. Equations and graphical representations of flow-rate characteristics are given in Annex E. Guidance on the use of practical units for the presentation of results is given in Annex F. Test results using commercially available pneumatic components are given in Annex G. Guidance on calculating the flow-rate characteristics is given in Annex H. A method for evaluating the flow ability of pneumatic components using effective conductance, C_a, is given in Annex I.