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Test chambers
Vibration systems
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Test systems
Hardness testers
Microscopes and optical measuring systems
3D Optical profilometers
Rheological equipment
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Test chambers

Weiss Technik GmbH offers the most extensive portfolio of testing chambers for simulating environmental conditions on individual products, including temperature, environmental, shock or corrosion chambers. The company draws from many years of experience in sales of standard products and specialized custom solutions for the automotive, electronic, construction, pharmaceutical and medical industries.

Temperature| Climatic
 Shock | Corrosion | Vibration 
 

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Vibration systems

Since it was founded in 1957, IMV has been proud to be at the forefront of research and development in vibration testing systems, supplying technically-advanced vibration systems, with safety and reliability as first priorities. The range of IMV vibration test systems includes single-axis and simultaneous muti-axis systems for up to six degrees of freedom. IMV designs, manufactures, markets and maintains vibration-test systems which simulate actual vibration environments, and measuring systems which record and analyse vibration created or experienced by a product.

Electrodynamic vibration systems 
Vibration Controller K2+ | Slip tables

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Test machines

MTS Systems Corporation is an american manufacturer who produces some of the most technically advanced test machines in the world. MTS products allows precise mechanical testing of a broad spectrum of materials in tension, compression and bending, but also dynamic and fatigue tests.

Static | Dynamic
Multiaxial | Components

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Test systems

Simulation systems from MTS are designed for extremely realistic testing. These systems enable you to accurately and repeatably simulate the operating environments for a wide range of structures — from automobiles and commercial aircraft to bridge piers and the human spine — all within the controlled test lab.

Components | MAST | Road simulation | Motion simulation

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Hardness testers

Hardness testers made by INNOVATEST Europe BV and Heinrich Bareiss Prüfgerätebau GmbH represent the best products on the market in measuring material hardness. The hardness of any material type can be measured, including very soft foams, rubbers and plastics, very hard metals, hardened steel and carbon. Our range includes manual, single-purpose hardness testers up to fully automatic, universal hardness testers.

Vickers&Knoop | Rockwell Brinell | Universal | IRHD | Shore

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Microscopes and optical measuring systems

With more than 100 years of tradition, Nikon is a world leader in developing and producing optical devices. Nikon has been focusing on processing accurate optical glass since 1917. The company is currently the only microscope manufacturer that produces its own glass for microscope lenses and lenses for optical measuring devices. Nikon products represent a guarantee of tradition, experience and high-quality Japanese manufacturing. 

Microscopes | Optical measuring systems

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3D Optical profilometers

Material confocal microscopes from Spanish manufacturer Sensofar are among the best products currently available on the market for precise 3D surface scanning. Sensofar machines are packed with numerous innovative technologies. Several patented solutions mean Sensofar leads the way in the field of contactless 3D material analysis at subnanometric resolutions.

Industry & research | Integration

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Rheological equipment

The rheological testing equipment of top German manufacturer GÖTTFERT leads the way in research and quality inspection of polymer and rubber characteristics. The company specializes in equipment for measuring melt flow index, high-pressure capillary rheometers for measuring viscosity, thermal conductivity and PVT diagrams, machines for elastomer tests and foil analysis and online technologies for measurements conducted directly during production processes.

Melt Flow Indexer
Capillary Rheometers | Elastomer-Testing

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Passive safety test systems

The German company HuDe, with more than 30 years of experience on the market in measuring technology, guarantees high-quality products and services, mainly focusing on automotive safety such as airbag and crash testing.

Airbag test and equipment
Dynamic test / Impactors

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  1. Home
  2. Accredited calibration laboratory no. 2298
Our services

Accredited calibration laboratory no. 2298

We have been Accredited Calibration Laboratory no. 2298 in accordance with ISO 17025 since 2001. Besides extensive and modern equipment, our personnel are highly trained. We are therefore always ready to accommodate your needs and work for you in the most exacting manner.

Accredited temperature and humidity calibration

Calibration of test chambers

Temperature

Temperature calibration at a single spatial point or homogeneity calibration in a temperature range of -70 to +400 °C

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Humidity

Humidity calibration at a single spatial point or homogeneity calibration with a relative humidity range of +10 to 95%

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Our services

Test device calibration

Hardness testers

In accordance with Vickers, Rockwell, Brinell, Shore, IRHD and other methods

tvrdoměry
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Mechanical test machines

Power sensors, extensometers, etc.

trhací stroje
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Optical devices

2D & 3D measuring systems and microscopes

oprtické přístroje
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Plastometers

Chamber temperatures, loading forces, lengths, etc.

plastometry
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QUESTIONS AND ANSWERS

FAQ

WHAT IS THE DIFFERENCE BETWEEN ACCREDITED AND UNACCREDITED CALIBRATION?

- Accredited calibration

Accredited calibration is conducted by a laboratory with valid certification issued by the appropriate accreditation authorities, such as ČIA. Calibration is then conducted in accordance with the calibration procedures approved by ČIA. The methods used are regularly validated, and interlaboratory comparisons with ČMI are conducted. Accredited laboratories are subject to certain control mechanisms, which are described and specified in detail in the Quality Guide. They are also annually assessed by accreditation authorities. Accredited laboratories comply with all the requirements and conditions in accordance with ČSN EN ISO/IEC 17025. Customers therefore obtain accurate, clear and reproduceable results.

- Unaccredited calibration

Unaccredited calibration is conducted in accordance with internal regulations only and the calibration laboratory incorporates only those control elements it considers necessary. No other control mechanisms are in place and the results may differ from the calibration conducted by an accredited laboratory.

WHAT IS THE DIFFERENCE BETWEEN CALIBRATION AND AN ADJUSTMENT?

Calibration of a measuring device is a set of procedures that compare the values from a measuring device and the known values of an etalon. 

Adjustment is a process that sets the output values of a measuring system to correspond to the etalon’s values with a defined accuracy. For example, device calibration can determine the error in a measuring device’s measurements. The adjustment process (using, for example, calibration constants) sets the device to indicate the real values at any given point.

 

WHAT IS THE DIFFERENCE BETWEEN DEVIATION AND MEASUREMENT UNCERTAINTY?

Measurement deviation is the difference between the real value of the measured quantity and the value determined by measurement (etalons).

Measurement uncertainty is a parameter attached to a measurement result. It characterizes the dispersion of the values that could be justifiably assigned to a measured quantity. Measurement uncertainty is affected by individual sources that move the measured value away from the real value (unsuitable device selection, poor procedure, linearization, approximation, impact of the surrounding environment, etc.). The final uncertainty therefore consists of several partial uncertainties.

WHAT IS THE DIFFERENCE BETWEEN CALIBRATION at a single spatial point and IN HOMOGENEOUS SPACE?

Calibration at a single spatial point

This type of calibration is the most commonly executed. The sensor is placed at the centre of a device’s space, and the result represents the deviation of the parameters entered on the displaying device from the value measured using the etalon and has a certain measurement uncertainty.    

Calibration in homogenous space

Homogeneous measurements explore the temperature and humidity distribution in a previously defined space. The measurement result is a temperature and humidity map of the device’s space, where the deviations at individual spatial locations are clearly visible. Measurements in homogeneous space are based on the standard ČSN EN 60068-3-5, which specifies not only the distances between individual sensors, but also their number (depending on the chamber size).

CAN CALIBRATION AND ADJUSTMENTS BE MADE BY THE SAME PERSON IN A SINGLE TEST?

Yes, one person may conduct calibration and adjustment in a single test, provided they have been sufficiently trained. However, the device adjustment procedure requires additional time, which means a higher price (calibration of each unit – adjustment – recalibration of the given value).

HOW IMPORTANT IS TEMPERATURE STABILIZATION?

The temperature stabilization time interval is very important and has a fundamental impact on the final measurement result. Devices that generate heat and humidity do not maintain their values linearly but oscillate instead according to a sinusoid. The difference between the min. and max. measured values is greater at the beginning than after a longer time interval. A longer stabilization time and therefore a reduction of the difference strongly influences the corresponding measurement uncertainty and the entire calibration result = a more accurate and better result.

WHAT SHOULD THE CALIBRATION INTERVAL BE?

Each calibration interval is selected by the user according to their conventions. Only when the measuring device is designated as a specific measuring device is the verification time defined by Regulation No. 345/2002 Coll.

Generally, this interval is recommended at one year for devices that are used often and two years for devices used less often.

AT HOW MANY POINTS SHOULD THE CALIBRATION BE CONDUCTED?

It depends on the device’s manner of use. If it is not necessary to know individual deviations in a given space, you can opt for calibration at a single point in the centre of the given space. If it is necessary to know the individual deviations in a device’s space, calibration using a homogeneous space is recommended. Homogeneous calibration is generally recommended for chambers with a volume of more than 2000 litres.

OUR EXPERIENCED STAFF

We will advise you

Karel Petrýdes
Head of Calibration Laboratory
+420 727 803 976
karel.petrydes@testsysteme.cz
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