Calibrating materials testing machines and instruments

Benefit from our many years of experience in calibrating testing systems at Germany's biggest testing laboratory.

Our calibration service and laboratory have been accredited by the German Calibration Service (DKD( since 1994 and DAkkS-accredited since 2013. This shows that we clearly satisfy the requirements for testing and calibration laboratories as defined by DIN EN ISO/IEC 17025—your guarantee for accurate, independent, and efficient calibration services.

Calibration

Everything Under One Roof

We are experts in many calibration methods, covering numerous standards. Our comprehensive materials testing machines and instruments calibration portfolio enables us to calibrate a wide variety of measurands. This includes accredited measurands such as force, length, mechanical work and hardness, plus many additional measurands so that we have the right solutions readily available for your machines and requirements.

Static or dynamic materials testing machines, pendulum impact tests, hardness testers or other testing machines—we can provide professional, traceable calibration for all. In addition to our own Zwick materials testing machines and instruments, we can also calibrate testing machines made by other manufacturers.

Our Services

Zwick is accredited by DAkkS to perform calibrations and issue calibration certificates as the highest form of documentation. Working with standardized processes we calibrate more than 10,000 materials testing machines and instruments a year, providing us with sound expertise and experience. This makes Zwick the largest calibration laboratory for materials testing machines and instruments in Germany.

Accredited measurands

Additional measurands

Read more for detailed information about the Zwick calibration portfolio and the scope of our services.

Accredited measurands

Force Calibration of force measuring devices for materials testing machines to DIN 51220

In the tensile direction: from 0.02 N to 3,000 kN

In the compression direction: from 0.02 N to 5,000 kN

DIN EN ISO 7500-1 DIN EN ISO 7500-1 Bbl. 1-3 DIN EN ISO 7500-2 ASTM E4
Length Calibration of length measurement devices of materials testing machines as per DIN 51220

In the tensile and compression directions: from 0 mm to 1,500 mm

DIN EN ISO 9513 ASTM E83 ASTM E2309
Mechanical work Calibrating pendulum impact testers and impact testers From 0.2 J to 750 J DIN 51222 DIN 51230 DIN 52189 DIN 53512 DIN EN ISO 148-2 DIN EN ISO 13802 ASTM E23
Hardness Calibration of hardness testers to Brinell, Vickers, Rockwell, Knoop, and ball indentation methods DIN EN ISO 6506-2 DIN EN ISO 6507-2 DIN EN ISO 6508-2 DIN EN ISO 4545-2 DIN EN ISO 2039-1 ASTM F36
Hardness Calibration of loading devices of hardness testing machines from 10 g to 3,000 kg DIN EN ISO 6506-2 DIN EN ISO 6507-2 DIN EN ISO 6508-2 DIN EN ISO 4545-2 DIN EN ISO 2039-1 ASTM F36
Hardness Calibration of the optical indentation measurement device of hardness testing machines from 0 mm to 6 mm DIN EN ISO 6506-2 DIN EN ISO 6507-2 DIN EN ISO 4545-2
Hardness Calibration of the depth measurement device of hardness testing machines From 0 mm to 0.8 mm DIN EN ISO 6508-2 DIN EN ISO 2039-1 ASTM F36

Additional measurands

Dynamic force Verification of dynamic force on Vibrophores MIL STD - 1312 B
Torque Calibration of torque From 0.02 Nm to 2,000 Nm According to DIN EN ISO 7500-1
Angle Calibration of encoder on torsion machine from 0° to 360° According to DIN EN ISO 9513
Alignment Electronic measurement of the test axis alignment on materials testing machines with strain-gaged alignment specimens ASTM E 1012 Nadcap AC 7101 Nadcap AC 7122
Instrumented striking edges Calibration of the force of instrumented striking edges of pendulum impact testers EN ISO 14556
Puncture and impact strength Calibration of impact testers Mass of drop weight, drop height and Piezo load cell DIN EN ISO 6603-1 DIN EN ISO 7765-1
Special methods for hardness testing Calibration of hardness testers for instrumented indentation tests (Martens), Vickers and Brinell depth measurement methods DIN EN ISO 14577-2 VDI/ VDE 2616
Melt index (MFR)/volume flow index (MVR) Calibration of extrusion plastometers for melt index and volume flow index Load, piston stroke and temperature EN ISO 1133
Vicat/HDT Calibration of Vicat/HDT heat deflection temperature with oil bath or direct contact heating Load, depth travel and temperature DIN EN ISO 306 DIN EN ISO 75-1
Temperature device Calibration of temperature in center of test-chamber of temperature chambers from -40°C to 350°C According to DAkkS-DKD-R 5-7 Meth. C
High temperature Calibration of thermo-elements of high-temperature furnaces Up to 1,200°C According to DAkkS-DKD-R 5-3
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Zwick benefits

What sets us apart

Reliable test results—we calibrate more accurately than the standard requires

The range for calibration depends on the type of load cell on the materials testing machine, the machine electronics, and the display resolution. For Zwick materials testing machines with high precision(HP) series load cells, the range is starts at 0.2% of nominal force; for other types the range starts at 0.4%. In this way we cover the full measurement range and ensure maximum result accuracy. The standards require a calibration range of 20 – 100% of the nominal load and five calibration stages. A Zwick calibration certificate consists of 11 calibration stages.

Our flexibility is your success.

With over 100 highly skilled service technicians and calibration technicians, who benefit from a continuous training program, we have access to a large pool of knowledge and expertise. Zwick service technicians are located in Germany, Austria, Switzerland, and Denmark, as well as in Benelux countries, enabling us to guarantee fast, flexible, and prompt on-site calibration service. Our flexibility and proximity to our customers are unique and are especially important to us.

Preventative inspections save you money in the long term

As part of our calibration service, we offer inspections carried out using checklists to reduce the risk of malfunctions or machine downtime and guarantee productivity. This means you save money on repair costs and spare parts in the long term. During these inspections, which only we as manufacturers can perform, our service technicians inspect your testing machines and are able to carry out minor repairs and adjustments on the spot. This inspection is especially important, since the normative directives DIN EN ISO 7500-1 specify the need for inspection prior to calibration.

Zwick Service is reliable and competent

Each individual service technician is has outstanding skills and is regularly trained, as proven during each and every on-site visit. Service technicians carry personally assigned calibration equipment with customized adapters and the necessary reference sensors. To maintain DAkkS accreditations, reference sensors are recalibrated at prescribed intervals.
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Worldwide Accreditation

Whether here at home or abroad, Zwick calibration laboratories are operated to the highest standards. In addition to our calibration laboratory in Ulm, we also operate calibration laboratories in Europe, Asia, and in North and South America. We are DAkkS accredited and we are also accredited by COFRAC, UKAS, A2LA, INMETRO, TÜRKAK and NABL. Mutual recognition of national accreditation bodies under the ILAC agreement, we ensure worldwide validity of your calibration certificate and test results.

Measurement System Analysis (MSA)

As part of inspection and calibration of your materials testing machines and instruments, we also perform an additional measurement system analysis (MSA). This serves as proof of suitability of the testing process in compliance with industry-specific standards that are highly relevant in the automotive (ISO/TS 16949), medical, and pharmaceutical industries. For destructive materials testing, Method 1 according to the Q-DAS guideline is used. This method checks for the accuracy and repeatability of a testing system's test results. A measured value is approached 50 times with a working standard (master) thus achieving an average value and standard deviation, so that together with a set value and a tolerance limit, a capability index of Cg and Cgk can be calculated. At a minimum this must reach a value of 1.33 to confirm the measuring instrument capability.
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