ISO 20145:2026

Pneumatic fluid power — Test methods for measuring acoustic emission pressure levels of exhaust silencers

Publication date:   Feb 4, 2026

General information

60.60   Standard published   Feb 4, 2026

ISO

ISO/TC 131/SC 5 Control products and components

International Standard

23.100.99   Other fluid power system components

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Scope

This document specifies two methods of measuring the level of acoustic pressure at the outlet of an exhaust silencer:

the first method, called "steady-state mode”, is intended to evaluate the noise level under steady state flow, i.e. constant upstream pressure (steady-state test according to ISO 6358-1);
the second method, called “discharge”, is intended to measure the noise level during the decrease of the pneumatic pressure (discharge test according to ISO 6358-2).

This document is applicable to pneumatic exhaust silencers and devices designed to reduce the sound produced by discharges of compressed air, entering in the scope of application of ISO 6358-1 and ISO 6358-2.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 20145:2019

NOW

PUBLISHED
ISO 20145:2026
60.60 Standard published
Feb 4, 2026