Flow calibration - Gas measuring bell


Over the last few years, we at EP-E have designed and introduced a range of primary standards designed for use in calibration laboratories. As a technology partner of the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, Germany, our solutions are based on the highest standards. The EP gas bell plungers generate a volume flow which is traceable to the SI units length and time. The pistons are driven by a stepper motor via a spindle. In the initial state one piston is fully retracted and the other fully extended. The volume flow can be set with high precision via the piston cross section and the travel speed. At the end of the calibration process, both pistons are in the opposite position to the initial position.

Gas detector-controllers

Product features

Measurement range 1..250 m³/h
Measurement uncertainty Version A: ≤ 0.06% (k=2) Version B: ≤ 0.15% (k=2)
Operating pressure 1100 Pa

Additional product literature

PDF documents

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