Calibration of thermodynamic measurands

Thermodynamics is a branch of physics and deals with the laws of heat, volume, pressure and temperature and their relationship to energy and work. The measurement of thermodynamic parameters plays a quality-assuring role in almost every industrial sector.  

Testo Industrial Services is the expert for the calibration of thermodynamic measuring instruments. Our thermodynamic laboratory is characterised not only by the lowest measurement uncertainties but also by a comprehensive portfolio for the calibration of the measurands temperature and humidity. 

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The measurement of temperature plays a decisive role in almost every industry. Therefore, the calibration of the temperature measuring devices used, such as data loggers, thermal imaging cameras, immersion sensors, thermocouples, etc., is essential. 

In the Testo Industrial Services Group, you can select the appropriate calibration points for your measuring instrument individually according to your quality requirements. With the lowest measurement uncertainties, we calibrate in a range from -196 ˚C to 1200 ˚C. All electronic temperature measuring instruments, resistance thermometers and thermocouples are calibrated in the liquid basin or in the tube furnace with a sodium heat pipe as well as in our modern temperature cabinets.

For this purpose, we are UKAS accredited for a large part of the measurement procedures according to DIN EN ISO/IEC 17025:2017. 

In addition to the classic temperature measuring devices, measuring devices are used in companies to check the surface temperature. Testo Industrial Services as an accredited calibration laboratory has the competence to calibrate surface temperature probes and sensors by contact or non-contact. The accredited calibration facility of Testo Industrial Services sets new standards in the calibration of surface sensors. 

In the field of contact surface measurement, we calibrate cross band probes, mushroom cap probes or other special probe designs. Unique here is the accredited calibration according to  ISO/IEC 17025:2017. 

Non-contact surface temperature measurements are made during the calibration of, for example, thermal imaging cameras and pyrometers. For this purpose, we have several black liquid emitters and are accredited in the range of -18°C to 350°C. 

The exact calibration of moisture measuring instruments requires the highest metrological know-how. The accredited humidity laboratory of Testo Industrial Services has one of the best measurement uncertainties in Europe, with an accuracy of 0.2 %RH in a measurement range of 5 to 95 %RH (-20 ...  95 ˚C).  

Calibrations are offered in various humidity generators such as the Huminator (two-quantity generator), 2pressure/2temperature humidity generator as well as in the climatic chamber. With the addition of a new primary humidity generator, the thermodynamics laboratory of Testo Industrial Services is completed by a further measuring system. In addition to capacitive and resistive humidity measuring instruments/data loggers/transmitters, high-precision reference standards such as dew point mirrors and dew point transmitters can also be calibrated. 

In the thermodynamic primary laboratory of Testo Industrial Services, we calibrate your high quality reference standards at the highest metrological level. These include, for example, temperature fixed point cells, resistance thermometers (SPRT), precious metal thermocouples or dew point mirrors.  

With the extension of a primary humidity generator, the thermodynamics laboratory of Testo Industrial Services is completed by a further measuring system. This allows us to offer highly accurate calibrations of moisture meters. The primary standard enables the fully automated presentation of stable and reproducible humidity values in a wide measuring range from 5 to 95% rH (-25 to 95°C frost/dew point) with the smallest measurement uncertainties in Europe. 

The metrological connection is realized via the standards of the PTB. The minimal measurement uncertainties are the result of many years of experience in temperature and humidity measurement technology and a unique interweaving of our accredited measurement variables pressure, temperature, humidity, flow and electrical. 

In the field of occupational safety, the measurement of luminous intensity plays a decisive role, because good working conditions are paramount. This also includes checking the lighting conditions at the workplace. Therefore, luminous intensity meters are used in almost all industries. 

Testo Industrial Services has the competence to perform calibrations of luminous intensity meters in a measuring range from 0 to 10,000 Ix. 

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