E+E Elektronik offers accredited calibrations for CO2

The E+E calibration laboratory offers accredited CO₂ calibrations for gas concentrations in the range 5 … 300,000 ppm (μmol/mol), as well as for the equivalent volume fraction in μL/L. Due to the wide calibration range it is possible to calibrate all common CO₂ measuring devices such as sensors, handhelds, data loggers and spectrometers.

The calibration is performed as comparative measurement with a constant CO₂ reference concentration. The CO₂ reference concentration is generated by a special gas mixing pump according to DIN 51898-1_2015-05 and is freely selectable. The piston pump works with four high-precision pistons. The gas volume flow is precisely defined by the diameter of the cylinder, the stroke and the frequency, and can therefore be traced back to length, which is a fundamental physical quantity of the International System of Units (SI).

According to the International Laboratory Accreditation Cooperation (ILAC) agreements, only calibration laboratories accredited according to EN ISO/IEC 17025 can ensure the traceability of measurement results to SI and full international comparability. The accredited calibration certificate states the measurement uncertainty associated to the specific calibration processs.

Accredited CO₂ calibration certificates are generally required for measuring devices used for safety or for the control of key manufacturing processes. Accredited CO₂ calibrations are of interest for instance in the Food and Drugs Administration (FDA) regulated industries such as food and pharmaceutical. Reliable CO₂ monitoring and control is paramount for biological incubators. In building automation, the accuracy of CO₂ measuring devices impacts directly on the efficiency of demand controlled ventilation systems. 

In addition to CO₂, the calibration laboratory of E+E Elektronik is accredited for humidity, dew point, temperature, pressure, air velocity and mass flow by Akkreditierung Austria / Federal Ministry of Science, Research and Economy according to DIN EN ISO/IEC 17025 with identification number 0608.