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ISO 6953-3 1st Edition, August 1, 2012 Pneumatic fluid power - Compressed air pressure regulators and filter-regulators - Part 3: Alternative test methods for measuring the flow-rate characteristics of pressure regulators
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 6953 specifies alternative test methods for
testing pneumatic fluid power components that use compressible
fluids, i.e. gases. This part of ISO 6953 is applicable only to the
decreasing flow rate part of the hysteresis curve of forward flow
and relief flow characteristics. This method can be applied
when:
— the pressure regulation dynamics of a component under test is
rapid enough to be negligible, compared to the response of pressure
changes during charge and discharge tests;
— the pressure response does not show any overshoot or any
oscillating behaviour.
This part of ISO 6953 specifies requirements for the test
installation, the test procedure and the presentation of
results.
Examples of test results are given, as well as various data
processing methods, and visualization of data processing
procedures. Illustrations of overshoot and undershoot on regulated
pressure response and large variations on inlet pressure are also
given.
This part of ISO 6953 applies to the following components:
— compressed air pressure regulators and filter-regulators
according to ISO 6953-1;
— electro-pneumatic pressure control valves according to ISO
10094;
— other components such as relief valves.
NOTE If pressure regulation characteristics are needed, ISO
6953-2 is applicable.