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We make sure that you stay operational with your GRAETZ radiation meters. Whether for fire departments or in industrial use: We offer maintenance and service for all your measuring equipment.

Information on service intervals for GRAETZ Radiation measurement devices

For all functional tests and service works it is absolutely necessary to have detailed knowledge of the instrument’s operation manual and to abide by the following recommended testing and service intervals. Shoudl defects occur during control measurements which cannot be removed by the user himself, the instrument hast to be sent to us for repair.

Every 6 months, the functionality of the device should be checked by a specialist (e.g. maintenance officer of the CBRN unit) to maintain operational readiness. If any faults or damage are found during the inspection, we strongly recommend that you send the device to us for inspection.

Every 3 years the instrument should be sent to us for examination and recalibration to ensure correct function. 

The service intervals “2 years, 5 years and 6 years” are not relevant when the German regulations regarding official calibration and fire brigade approvals have not to be observed. More information on the German version of our Website.

Disposal of your old device

Old eletric / electronic devices often still contain valuable materials. But also harmful materials which have been necessary for their function. Disused devices do not belong to residual waste. We will take back your old device free of charge and care for itselfs disposal. This offer applies to all instruments delivered since August 2005.

Highest precision in the inspection & maintenance of Radiation measurement devices

For custody transfer measurement tasks, we offer certified devices that have undergone type examination by the PTB. Conformity with the requirements of the German Measurement and Calibration Act (Mess- und Eichgesetz, MessEG), the German Measurement and Calibration Ordinance (Mess- und Eichverordnung, MessEV) and with the type of construction described in the type approval is certified for the respective device by GRAETZ after a product test with a certificate of conformity from a nationally recognized conformity assessment body (calibration office) and a declaration of conformity. As a service, we also offer the inspection or maintenance of devices subject to calibration and the subsequent handling of recurring calibration.

In a special service area approved by the authorities, we are able to carry out repair and maintenance work on contaminated equipment. However, in accordance with radiation protection legislation (StrlSchG / StrlSchV) and for the protection of our employees, these must be explicitly marked as such by the sender and notified to us in advance.

The verification at our site in Altena, Westphalia, is carried out with an officially approved calibration facility for Radiation measurement devices, which is equipped with 137Cs and traceable to the national standards of the Physikalisch-Technische Bundesanstalt.

Make a service request to us now

Do you have a question about our services or would you like to have a device calibrated or repaired? Then send us an inquiry with the following form. However, you can also use our other contact options.

Radionuclide Identifier (RID)

For detection of gamma, beta, neutron & cosmic radiation & more

Dose meters

Portable electronic devices with dose and / or dose rate warning functions

Dose rate meters

Portable electronic devices with dose rate detection, warning functions & more

Dose rate warning devices

Portable electronic devices with dose rate detection, warning functions & more

Contamination detection devices

Mobile devices for measuring radiation on surfaces


For range extension of measuring instruments


For measuring high dose rates from safe distance

Room monitoring monitors

Systems for dose rate measurement of gamma and X-ray radiation


Individual, for a wide range of industries

Fire brigades & Civil defence

Radiation protection measuring instruments for fire brigades and other civil protection organisations

Non-destructive testing (NDT)

Measuring instruments for X-rays and gamma radiation for testing materials

Nuclear Medicine

Radiation measuring instruments for MRT and CT X-ray systems in medicine


Measuring instruments for personal & local dose as well as contamination in various industries

Research & Education

Radiation meters for educational institutions, research institutes and laboratories


Maintenance, Repair, Calibration, Verification


We train you in the use of our measuring and warning devices


Download product images & data sheets

GRAETZ - at a glance

Learn more about us, our products and services

Our mission

Learn more about our corporate mission

Our quality standard

Our claim: 100% reliability

Our offering

Measuring and warning devices for radiation protection

Our history

From petroleum lamps to radiation measurement technology

Jobs at GRAETZ

We are looking for colleagues. Apply now.