Leak Standard

A Calibrated Leak Simulator

What is a Leak Standard?

A leak standard is a calibrated, simulated leak that can be used in circuit with the part under test. A leak standard can be used during test setup to help you determine the parameters for your leak test. It can also be used to challenge your system by comparing multiple leak systems to each other.

Specifications

 

Dimensions – 4” long 0.5” diameter

Accuracy –  +/- 0.05 SCCM under 5 SCCM   –   +/- 1% of calibrated point over 5 SCCM

Ranges – 0.1 SCCM to 5 SLPM

Media Compatibility – Clean, dry Air, Nitrogen, Helium, CO2

Engineering Unit – Calibrated in SCCM at a pressure in PSIG. Corrected for elevation of end use location.

Fitting. –  Standard Staubli quick disconnect. Other fittings available upon request.

Speak to a Specialist

Our leak test specialist are happy to answer any questions you may have about test types and which tester would best suit your products needs. 

Calibrating a Leak Standard

 

Flow standards (or Leak Standards) are devices manufactured to flow air at a specific rate with a specified pressure. For example, 1sccm @ 20psig. This example would flow of 1 standard cubic centimeter per minute of air at 20 pounds per square inch (gauge) of supply pressure.

The schematic shown below shows the physical setup required to read the calibration of a flow standard.

The supply regulator range should be close enough to the target supply pressure to allow for small changes by the operator. The Digital flow standard (meter) should have accuracy enough to cover the accuracy of the device under test. The digital pressure gauge will indicate the supply pressure. The output of the Leak Standard should not be blocked; it should have a clear path to atmosphere.

With the supply pressure stable, the actual reading of the leak standard can be read from the Digital Flow Standard (meter)

Leak Standard Bubble Test

To visually verify that a leak standard is working, a bubble test can be performed. The outlet of the leak standard is plumbed to a test adaptor and tube assembly. The resulting output flow will cause bubbles to form when the tubing is held under water. A baseline test can be performed to count the bubbles per second of the given leak rate. This test can be repeated later to visually verify the leak standards functionality.

The outlet filter will need to be removed and the bubble test adaptor can be installed.

The average bubble rate for #T262-13s1 is 1 bubble per second.

Speak to a Specialist

Our leak test specialist are happy to answer any questions you may have about test types and which tester would best suit your products needs.