The Pioneer of Modern Leak Testing

Pressure Rise Leak Test

What is a Pressure Rise Leak Test?

A Pressure Rise Leak test works in the opposite way of a pressure decay test. This test method is less sensitive to temperature changes and is a go/no-go test; detecting the total system leak. The test part must be rigid enough to resist flexing or expanding. If more than one leak exists, other detection techniques must be used.

How is a Pressure Rise Test performed?

To begin the test, the test part is filled to a specified pressure and measured with pressure sensor P1. The chamber is allowed to equilibrate to atmospheric pressure and the pressure is monitored with pressure sensor P2.

Next, the test is started and P2 is monitored for any rising pressure over a specified time. A small amount of air is introduced into the chamber to verify chamber integrity.

Upon completion of the test, both the test part and the chamber are vented. Finally, the test part is replaced and another test is started.

Pressure Rise Test Pneumatic Diagram
Pressure Rise Test Pneumatic Diagram

Which Uson testers can perform a Pressure Rise test?

Optima vT – A versatile and customizable leak tester with up to two channels and eight sensor inputs that supports pressure decay, differential pressure, mass flow and other common tests

Qualitek – Fast, sensitive and accurate pressure decay, differential pressure and mass flow leak testers

Vector – Uson’s most powerful and configurable leak and flow tester, fully customizable pneumatics, up to ten independent test channels supporting a wide variety of input sensors

Uson Innovative Systems (UIS) – Custom made manual, semi automatic and fully automatic leak test systems and fixtures.

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