Compact Entry-Level Leak Tester
The PD has limited supply because its processor is discontinued, and replacement parts are limited. For new stations and PD replacements, the recommended path is the Zaxis Z5L: the same focused, single-channel pressure-decay or vacuum-decay job on the current Z-series platform, with a longer service horizon.
The Z5L is a drop-in path, not a new validation project. The pneumatics are the same, so fixtures and test pressures carry over, and the Z5L firmware has been tested side by side with the PD to deliver identical test results where applicable. Your programs and limits transfer, and operators see the same fill-settle-test-vent cycle they already know.
What you gain: 100 stored programs instead of four, a 5” pinch-zoom touchscreen with light and dark modes, HDMI output, USB and 24 VDC I/O, a 32-bit A/D in place of the 24-bit converter for finer resolution and faster scan rates, and a future-proof supply chain that keeps the tester serviceable for the long term.
Zaxis will help draft your IQ, OQ and PQ documents from your existing documentation to expedite validation of the Z5L. Whether you are adding a station or standardising a fleet of PD testers, request a quote and we will map each PD configuration to its Z5L equivalent.
Request for QuoteThe PD has limited supply because its processor is discontinued; the Z5L is the recommended upgrade for new stations and PD replacements: the same single-channel pressure-decay role on the current Z-series platform.
Validation support: Zaxis will help draft IQ, OQ and PQ documents from your existing documentation to expedite qualification of the replacement tester.
Standardise your fleet on a platform that will be supported for years.
The Zaxis PD brings pressure-decay leak testing to a compact, lower-cost platform. Its small form factor, bottom-mounted connectors and wall-mounting option help place the tester close to the fixture, reducing connection volume while preserving a clear touch-screen interface and programmable settings.
The PD is a practical choice when a production cell needs a dedicated leak-test station close to its fixture. Its compact arrangement is designed to reduce connection volume, and automatic pressure control, a 24-bit converter and 0.8 cm3 internal volume pair with simple data and control connections.
Small footprint for lab or automation space.
High sensitivity for demanding manufacturing specifications.
High-definition interface for setup and readability.
Small internal volume minimises testing variability.
Run multiple parameter sets through one port.
The PD is aimed at straightforward pressure-decay work where every inch of bench or automation space counts. It keeps the controls, program storage and data collection needed for a repeatable test while using a compact enclosure that can be wall mounted or located close to the leak-test fixture.
The PD is configured around a stored program for the test part. A pressure-decay cycle uses repeatable pressure and timing values so the part is evaluated against the selected limit.
Connect the part through the test fixture and apply the programmed positive pressure.
Allow the pressure and part to stabilise before taking the measurement.
Measure the pressure change with the configured program and compare it to the part’s acceptable limit.
Release pressure, make the result available through the interface or I/O, and prepare the next part.
Pressure-decay leak rate is related to pressure change, volume and time. Use the leak rate calculator to plan a test and work with Zaxis to select the PD pressure range and fixture arrangement.
The PD runs pressure decay and vacuum decay tests. Its compact design is especially useful when the tester can be mounted close to the fixture, limiting test connection volume and supporting the sensitivity and test time required by the application.
The PD is intended for entry-level, single-port applications where compact placement and repeatable pressure-decay testing are the priority. It can be applied to many sealed components when the configured pressure range, fixture and leak limit match the product.
Use pressure or vacuum decay to validate sealed medical components, tubing and assemblies at a defined leak limit.
Read more →Verify the sealing performance of sensors, connectors, housings and fluid-handling components.
Read more →Test sealed enclosures, cooling components and electronics housings where ingress protection matters.
Read more →Check IP-rated housings and sealed electronics using a method matched to the part and fixture.
Read more →Apply repeatable leak limits to manufactured assemblies before they leave the production line.
Read more →Connect the tester to tooling and controls so results can support repeatable production decisions.
Read more →Specifications below apply to the standard Zaxis PD compact platform. Select the pressure range, fixture connection and control arrangement for the actual part. The compact PD is designed to be placed close to the fixture, where low connection volume can support sensitivity and shorter test times.
Zaxis air leak testers are selected by the required test methods, footprint, pressure range, interface and configuration capacity. Choose the PD for a compact, entry-level pressure- or vacuum-decay station with one valve and four stored programs; compare other Zaxis models when the application needs more channels, larger displays or additional test methods.
| Test Types |  Zaxis Z8 |  Zaxis Z5 |  Zaxis Z1 |  Zaxis Z5L |  Zaxis Z8N |  VM3 Volumetric |
|---|---|---|---|---|---|---|
| Pressure Decay | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Vacuum Decay | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Occlusion | ✓ | ✓ | ✓ | ✓ | ✓ | × |
| Thermal mass flow | ✓ | ✓ | ✓ | × | ✓ | × |
| Laminar mass flow | ✓ | × | × | × | × | × |
| Burst | ✓ | ✓ | ✓ | × | ✓ | × |
| Pressure Cracking | ✓ | ✓ | × | × | ✓ | × |
| Chamber | ✓ | ✓ | ✓ | × | ✓ | × |
| Back Pressure Flow | ✓ | ✓ | × | × | ✓ | × |
| High pressure (>200 psi) | ✓ | ✓ | ✓ | × | ✓ | × |
| Volumetric Decay | × | × | × | × | × | ✓ |
The compact PD fits production and laboratory environments where a focused pressure-decay test is needed near the fixture. Its small footprint supports applications across medical, automotive, electronics, consumer and industrial manufacturing when the selected configuration matches the part.
The PD has limited supply because its processor is discontinued. For new stations and PD replacements, Zaxis recommends the Z5L: the same pneumatics and single-channel pressure-decay role, firmware validated side by side for identical results where applicable, plus 100 programs, a 5” touchscreen, HDMI and a 32-bit A/D on a platform with a long service horizon. Zaxis will help draft IQ/OQ/PQ documents to expedite your validation.
The PD supports pressure decay and vacuum decay.
The PD measures 6 inches wide, 7 inches high and 6.5 inches deep.
Reducing test connection volume increases test sensitivity and decreases test times. The PD also has a 0.8 cm3 internal volume.
The PD has a 4.3-inch high-definition color touchscreen for readability and easy setup.
The PD stores four programs, allowing multiple parameter sets through a single port.
The PD provides USB, I/O and Ethernet TCP/IP, plus an accessible USB port for data collection.
The PD supports 0–30 and 0–100 PSIG positive-pressure options, or 0–14.5 PSI vacuum. Confirm the correct configuration for the application with Zaxis.
