Leak Test Standards

A leak standard, also called a flow standard, is a calibrated, simulated leak used to ensure reliable outputs from air leak testing equipment. A calibrated leak standard can be used during test setup to determine the parameters for your leak test, challenge your system by comparing multiple leak systems to each other, and more. As your leak tester manufacturing partner, Zaxis is dedicated to providing high-performance leak test standards for use with our USA-made testers.

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Leak Test Standards to Match Your Specifications

Leak test standards are devices manufactured to flow air at a specific rate with a specified pressure. They work with the entire Zaxis family of air leak testing products, including the Zaxis 7i, Isaac HD, iKit, and Zaxis PD. Leak test standard specifications include:

• 0.1 SCCM to 5 SLPM
• 4” long with a 0.5” diameter
• Accuracy of /- 1% FS or +/- 0.05 SCCM, whichever is larger
• Compatible with clean and dry air, nitrogen, helium, and CO2
• Standard Staubli quick disconnect fittings, with other fittings available upon request

The Benefits of Using a Calibrated Leak Standard

Air leak standards add many benefits to your leak testing processes, no matter your leak testing method. A few examples include:

• Reduced manpower for lower labor costs
• Easy and intuitive operations
• Low maintenance requirements
• Improved quality through quantifiable results, lowering defective rates
• Cost-effective operations, including reduced test times, running costs, and more

How to Calibrate Leak Test Standards

Calibrating leak test standards is critical to ensure your equipment is operating as intended. The schematic below displays the physical setup required to read the calibration of a flow standard.

For example, 1 SCCM at 20 PSIG should flow 1 standard cubic centimeter per minute of air at 20 pounds per square inch (gauge) of supply pressure. 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 cover the accuracy of the device under test. The digital pressure gauge will indicate the supply pressure. The output of the leak standard should have an unblocked path to atmosphere. With the supply pressure stable, the actual reading of the leak standard can be read from the meter.

Ensure Calibrated Leak Standards with Bubble Tests

Bubble tests visually verify that a leak standard is working. Use these simple steps to complete a bubble test and check you are using a calibrated leak standard:
 

1. Remove the outlet filter and install the bubble test adapter.
2. Plumb the outlet of a leak test standard to a test and tube assembly.
3. The resulting output flow will cause bubbles to form when the tubing is held under water.
4. Perform a baseline test to count the bubbles per second of the given leak rate. The average bubble rate for #T262-13s1 is 1 bubble per second.
5. Repeat this test at a later point to visually verify the calibrated leak standard’s functionality.

Zaxis is Your Trusted Manufacturer of Leak Test Standards & Leak Tester Accessories

Along with manufacturing the market’s best air leak testing equipment, Zaxis is your go-to source for valves, electronic regulators, leak test standards, and other leak testing accessories designed to improve your production line. Contact us or request a quote today to get started.