So that everything runs perfectly

Support, service, advice and training: with our extensive portfolio of services, you will always be up to date in the field of leak and functional testing. Our dedicated team will take care of your request with competence.

Technical support

Do you have technical queries, need support in case of malfunctions or assistance with the installation of the remote maintenance software? We will find the best solution!
Zeltwanger Service: Control tablet
Man while maintaining a ZED device – calibration, a service from ZELTWANGER Leak Testing


Your testing technology deserves the best servicing, for long-term, reliable operation. We offer extensive service options:

Maintenance and inspections

Regular inspections extend your testing technology’s.service life and ensure its reliability


If repairs do become necessary, we will carry them out quickly to minimise downtime.

Spare parts

Long-term availability of spare parts ensures optimum cost-effectiveness and contributes to sustainability.


Customised retrofits ensure the use of your testing technology in the long-term, even in the face of changing requirements.


Regular calibration of your ZELTWANGER leak testing technology ensures precise results.

Accredited calibration laboratory pressure

Our modern calibration laboratory (D-K-21368-01-00) is accredited for measuring pressure pursuant to the specifications of the national accreditation body of the Federal Republic of Germany (DAkkS), and as such meets the high quality standards pursuant to DIN EN ISO/IEC 17025:2018.

ZELTWANGER on the DAkkS website
Pressure and flow rate calibration

Our service offers calibration for measuring pressure (-1 to 100 bar) and flow rate (0.0005 to 500 ln/min).

Fast and flexible

We offer fast response times and provide calibrations both in our permanent laboratory and on site.

By the way: if you use devices with the removable ZEDcore measuring module, the calibration can be carried out without sending in the entire leak tester.


Service downloads

Our service order submission form allows you to process your repairs quickly and reliably. With the remote maintenance software, our support staff can provide support quickly.

Training & workshops

The field of leak testing demands complex expertise. Our user-focused training courses provide relevant knowledge and are aimed at plant operators, maintenance technicians, planners and developers. We will be happy to arrange individually tailored training courses for you on request.

Training room - a service from ZELTWANGER Leak Testing

Basic examination & consulting

Are you planning a project in the field of leak testing? We will be happy to assist you in the development. Our experienced application developers determine the right test parameters and test methods, carry out measurement capability analyses, and thereby demonstrate the achievable test reliability. Our many years of experience enable optimal integration planning for your production processes.

Planning & integration – the steps to your solution

Basic examination
Basic examination
Previous attempts
Previous attempts
Initial set-up
Initial set-up
Employee training
Employee training
Maintenance & calibration
Maintenance & calibration

1. During the basic examination, we evaluate the technical feasibility and select the appropriate test method.

2. After defining the test method, we determine and document the later process parameters as part of a preliminary investigation.

3. Once the integration concept is in place, we select devices, software, adapters and accessories and adapt them to your requirements if necessary.

4. The systems are integrated into your production processes on site and put into operation by us.

5. We train your employees in their area of responsibility.

6. Our service team carries out the maintenance as well as the factory calibration and accredited calibration of your systems on site or at our premises.