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DAkkS-accredited calibrations

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Our calibration laboratory is accredited by the German Accreditation Body (DAkkS) in accordance with the DIN EN ISO/IEC 17025 standard under DAkkS registration no. D-K-17589-01-00.

The measured variables are volume and mass flow or volume and mass of air and gases as well as the variables pressure, temperature, relative humidity and electrical DC voltage, DC current and DC resistance. TetraTec Instruments is also a member of the relevant technical committees of the German Calibration Service (DKD) under the supervision of the Physikalisch-Technische Bundesanstalt (PTB).

Measured variable
in the laboratory
Measurement range Calibration standard Traceability
Volume flow (air) 0.12 mL/h up to 10,000 m³/h crit. nozzles, Gas meter, LFE, pVTt PTB
Mass flow (air) 0.144 mg/h up to 12,000 kg/h crit. nozzles, Gas meter, LFE, pVTt PTB
flow creation (air) up to 450 Nm³/h compressed air (8 bar)
up to 500/ 2000/ 10,000 m³/h vacuum (-600/ -300/ -80 mbar)
Flow of Foreign Gas
N2, H2, He, Ar, CH4,
CO, C3H8
10 L/h to 9,000 L/h
CO to 1,500 L/h,
C3H8 0.5 L/h to 600 L/h
Gas meter, LFE PTB, METAS
Absolute pressure 14 mbar up to 70 bar Piston manometer, el. pressure sensors PTB
Positive pressure 0 up to 70 bar Piston manometer, el. pressure sensors PTB
Negative pressure -1,000 mbar up to 0 mbar Piston manometer, el. pressure sensors PTB
Temperature 0 up to 90 °C Resistance thermometer, water bath DAkkS
Relative humidity 10 up to 95 % r.F. Dew point mirror, el. humidity sensor DAkkS
DC voltage 0 up to 60 Volt System multimeter DAkkS
DC current 0 up to 3 Ampere System multimeter DAkkS
DC resistance 0 up to 12 MOhm
50, 100, 110, 120, 130 & 140 Ohm
Resistance meter, System multimeter,
fixed resistor
DAkkS
Measured variable
on site
Measurement range Calibration standard Traceability
Volume flow (air) 60 mL/h up to 4,700 m³/h Gas meter, LFE DAkkS
Mass flow (air) 72 mg/h up to 5,640 kg/h Gas meter, LFE DAkkS
Flow creation (air) dependant of the customer's supply
Absolute pressure 400 mbar up to 7 bar el. pressure sensors DAkkS
Positive pressure 0 up to 6.8 bar el. pressure sensors DAkkS
Negative pressure -680 mbar up to 0 mbar el. pressure sensors DAkkS
Temperature 10 up to 50 °C Resistance thermometer, water bath DAkkS

For further information on accredited foreign gas measurements, you can find current details here.