Zaxis air leak tester family arranged in a studio

Air Leak Testers

Compare Zaxis Air Leak Testers

Zaxis makes USA-built modular air leak testers with 0.00001 PSI resolution and 32-bit ADC electronics, with models differentiated by channels, enclosure and supported methods.

Choose a tester around the part, pressure range, fixture and production environment. Zaxis platforms cover compact machine integration, benchtop stations, modular multi-port testing and sealed industrial enclosures.

Pressure decay, vacuum decay, flow and specialized methods can be configured around the model and application. The matrix gives a quick view of method support, while each product page supplies applicable configuration details.

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Choose a tester

Match the tester footprint and capabilities to the station.

Discontinued 03/31/25 (limited parts through 2028): →Isaac HD Modular Production Air Leak Tester →7i Large Display Leak Tester →iKit Automated Air Leak Tester — successors are the Z5, Z1 and Z8. See the legacy upgrade and migration center.

How to choose

By channel count

Z1 and Z5L are single-channel options. Z5 and Z8 support up to four ports, while Z1 can cascade for synchronous multi-channel work.

By enclosure

Select a benchtop configuration, a machine-integrated Z1, or the Z8N sealed NEMA enclosure for industrial installations.

By pressure range

Z1 covers positive pressure ranges up to 700 PSIG, while Z5 and Z8 reach 1,000 PSIG; vacuum ranges reach down to −14.7 PSIV, depending on configuration.

By method

Compare method support by model below, then review a tester page for configuration details.

Compare Leak Testing Performance

Every Z-Series tester shares the same resolution and test electronics; models differ in methods, enclosure and channel count.

Method support by model. ✓ yes · × no
Test Types	Zaxis Z8	Zaxis Z5	Zaxis Z1	Zaxis Z5L	Zaxis Z8N	VM3 Volumetric
Pressure Decay	✓	✓	✓	✓	✓	✓
Vacuum Decay	✓	✓	✓	✓	✓	✓
Occlusion	✓	✓	✓	✓	✓	×
Thermal mass flow	✓	✓	✓	×	✓	×
Burst	✓	✓	✓	×	✓	×
Pressure Cracking	✓	✓	×	×	✓	×
Chamber	✓	✓	✓ (limited part volume)	×	✓	×
Back Pressure Flow	✓	✓	×	×	✓	×
High pressure (>200 psi)	✓	✓	✓	×	✓	×
Volumetric Decay	×	×	×	×	×	✓

Air tester specification summary

Compare published configuration details. Confirm the selected pressure range, fixture and options with Zaxis.

Published air-tester specifications. “—” means a comparable value is not stated on the model page.
Specification	Z8	Z5	Z5L	Z1	Z8N	VM3
Channels / ports	Up to 4 ports	Up to 4 ports	1 port	1 channel	Up to 4 ports (Z8 multi-tester in NEMA enclosure)	1 channel
Pressure / vacuum range	2–1,000 PSIG; 0–14.7 PSI vacuum	2–1,000 PSIG; 0–14.7 PSI vacuum	0–30 or 0–100 PSIG; 0 to −14 PSI vacuum	2–700 PSIG; 0–14.7 PSI vacuum	0–3 up to 1,000 PSIG; vacuum to −14.5 PSIV	0–15, 0–100, 0–500 PSIG; 0–15 PSI vacuum
Resolution	0.00001 PSI	0.00001 PSI	0.00001 PSI	0.00001 PSI	0.00001 PSI	0.00001 PSI
Display	8-inch touchscreen	5-inch touchscreen	5-inch touchscreen	Optional detachable TSi	Configurable display in NEMA enclosure	7-inch color touchscreen
Stored programs	100	100	100	100	Up to 100	100
I/O & connectivity	USB, Ethernet/IP, TCP/IP, 24VDC I/O	USB, Ethernet/IP, TCP/IP, 24VDC I/O	USB, TCP/IP	USB, Ethernet/IP, TCP/IP, 24VDC I/O	RS232, I/O, Ethernet (TCP/IP), Ethernet/IP	USB, RS232, Ethernet (TCP/IP); optional EtherNet/IP
Enclosure / environment	Standard Z8 enclosure; sealed NEMA version available as the Z8N	Benchtop footprint	Benchtop footprint	Machine-mount footprint	Sealed NEMA enclosure	No external air supply
Fixture compatibility	Optional pneumatic valves for tooling and fixtures	Optional pneumatic valves for tooling and fixtures	—	Optional pneumatic valves for tooling and fixtures	Configurable fittings and valves	Piston-generated test volume; part fixture only
Typical applications	Automated factory production	Small or medium production parts	Dedicated pressure/vacuum-decay station	Machine integration	Industrial installations	Pressure-decay tests without house air
Best for	Modular multi-port automation	Up to four channels in a compact station	Focused single-channel testing	Compact automated cells	Protected NEMA installation	Volumetric pressure decay
Links	Product · Datasheet · RFQ	Product · Datasheet · RFQ	Product · Datasheet · RFQ	Product · Datasheet · RFQ	Product · Datasheet · RFQ	Product · Datasheet · RFQ

Trace-gas leak testing is a peer product line

Z-Charge and Z-Ion are a trace-gas leak-test system, not an air leak tester. Use this system when a helium trace-gas workflow is the appropriate method; review the trace-gas system page with Zaxis for the application.

Trace-gas system — separate from the air tester matrix
System	Test approach	Typical use	Resources
Z-Charge + Z-Ion	Helium trace-gas leak testing	Coordinated part preparation and helium leak detection	Product page · Datasheets · Request a quote

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Leak Rate Calculator

Volume : cm3

Pressure drop: PSI over the test time

Time: seconds

Atmospheric pressure: PSI

Leak Rate: SCCM

Calculate Now How is Leak Rate Calculated

Keep exploring

Explore available test methods

Explore air and trace-gas method pages. For helium test cells, see Leak Testing.

→Pressure Decay →Vacuum Decay →Mass Flow →Occlusion →Differential Pressure →Burst →Pressure Cracking →Chamber →Accumulation →Bombing →Hard Vacuum →Sniffing →Trace Gas

Industries we serve

Medical device leak testingCatheters, IV sets, fluid bags, pumps and diagnostic equipment.Automotive leak testingFuel, cooling, brake and battery components on production lines.Electronics leak testingSealed enclosures, wearables and sensors tested to IP ratings.All industriesIndustrial, consumer goods, packaging and more.

Air leak tester FAQ

Which air leak tester fits automation?

The Z1 is designed for machine integration, while Z5 and Z8 add modular testing for production stations.

Which tester is for benchtop work?

Z5L and PD are compact options for focused pressure-decay or vacuum-decay work.

Which tester has a NEMA enclosure?

The Z8N packages Z8 functionality in a sealed NEMA enclosure for industrial installations.

Which tester handles one part at a time?

Z1, Z5L, iKit and PD are single-channel options; Z1 testers can cascade for synchronous multi-channel work.

What resolution do Zaxis air testers use?

Z-Series air leak testers report results to 0.00001 PSI, backed by a 32-bit ADC, low internal volume and fast scan rates.

How many channels can Zaxis testers support?

Z5 and Z8 support up to four test ports, while Z1 can cascade for synchronous multi-channel applications.

Which methods can an air tester run?

Method support varies by model; use the matrix and individual tester pages to match the application.

Where are Zaxis air leak testers made?

Zaxis air leak testers are designed and built in the USA.

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