A modular concept

By integrating the ZEDcore in plug-and-play mode in all ZED devices (apart from ZEDeco), your leak testing becomes as flexible as possible without requiring complicated installation.

This modularity allows measuring circuits to be exchanged quickly and easily in one device or a measuring module to be used across different devices.


Maximum modularity for leak testing

Experience the unimagined flexibility of ZEDcore for the ZED device family.


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Measuring methods


RD relative pressure (optional: 2-channel)


relative pressure with bell testing


relative pressure with flow rate


differential pressure


accumulation pressure


mass flow

(See technical data for available pressure ranges)

Accessories (optional)

  • External ventilation valve
  • Temperature compensation

Application examples

  • Automotive: Engines, cylinder heads, gears, diaphragms, auxiliary heaters, power adapters, hybrid drives, heat exchangers, control electronics, batteries, lines, valves, fuel cells, pumps, etc.
  • Medical technology: Catheters, dialysis filters/boxes, flushing systems, hose systems, secretion containers, syringes, external lung machines, etc.
  • Packaging/cosmetics: Dispensing pumps, plastic bottles, cartridges, etc.
  • Household appliances: Water distributors, water pumps, gas valves/fittings, stoves, compressors, etc.
  • General industry: Cylinders, safety valves, non-return valves, couplings, grippers, ball valves, seals, throttle pins, etc.

Detailed views

Control unit

Expansion and combination options

ZEDbox 1 external

+ 1 external
max. 2 channels
ZEDbase+ 1 internal

+ 1 external
max. 2 channels
ZEDmod internal

max. 8 channels
ZEDflex internal

max. 8 channels


  • Auxiliary
  • Temperature sensor
  • Interface to the control unit
  • Dimensions (H x W x D): 139 x 235 x 315 mm
  • Weight: approx. 8 – 10 kg
  • Power supply: 24 VDC (+10 / -5%) 5 A
  • Test medium: Compressed air (oil and water-free according to ISO 8573-1 class 3)
Technical data: Relative pressure Differential pressure Accumulation pressure Mass flow Flow rate
Test pressure range Vacuum – 232 psi/16 bar 0 – 6 bar Vacuum – 116 psi/6 bar
Test pressure accuracy 1% of the end value 1% of the end value 1% of the end value
Measuring range As with test pressure range – 1.45 – 1.45 psi – 100 – 100 mbar 10,000 – 450,000 ccm/min | ml/min -50 – 50 or -250 – 250 ccm/min | ml/min up to 250,000 ccm/min | ml/min
Measurement resolution 0.5 ppm of the end value
Smallest measurable pressure change (type-specific) 0.5 Pa (14.50 psi / 1 bar) – 4 Pa (232 psi / 16 bar) 0.1 Pa 0.1 Pa (50 mbar) – 1.5 Pa (6 bar)    
Measuring accuracy (leak rate) Depending on the test setup Depending on the test setup Typically 5% of the measured value, no smaller than 0.5% of the end value
Repeatability Depending on the test setup Depending on the test setup 0.5% of the measured value, no smaller than 0.05% of the end value (depending on the test setup)

Further accuracies, test pressures, control options, customer-specific protocols for higher-level data acquisition and evaluation systems on request

Get an overview of all information about the ZEDcore by downloading the data sheet free of charge.

The advantages at a glance:

  • No programming knowledge is required because the measuring module can be used in plug-and-play mode.

  • Various measuring methods are possible: Relative pressure, relative pressure with bell testing, relative pressure with flow, differential pressure, mass flow, and accumulation pressure.

  • Machine downtimes are reduced because there is no need to install leak testing devices.

  • Fewer spare parts need to be stored because the measuring circuits can be easily replaced.

  • Calibration saves time and money since only the measuring module needs to be sent in.

  • The follow-up costs are lower because there is no longer any need for stand-by devices.

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