The objective of dynamic calibration is to determine the dynamic characteristics of transducers, in particular

- Step response time, rise time, over-shoot in time domain,
- Transfert Functions (amplitude and phase), resonance frequencies in frequency domain,
- The quasi-static sensitivity of transducers that do not transmit the DC component.

Dynamic calibration of pressure transducers is achieve by applying a pressure input measured by a transducer of reference and by recording the output with the transducer that have to be calibrated. The input signal generally used in the laboratory is a pressure step.

The equipments that generate the pressure steps are mainly :

- Shock tubes (TC, "Tube à choc") used for highs frequencies

Iso-pressure in a shock tube (t=0.6ms)

- Fast Opening Device (DOR, "Dispositif à Ouverture Rapide") used for lows frequencies ranges.

Fast Opening Device DOR20

The laboratory holds, operates and maintain the national references of the Laboratoire National de Métrologie et d'Essais (LNE) for the measure of “dynamic pressure” quantities.
This national reference consists in a collective calibration set of equipment which includes Shock Tubes TC20 and TCR, Fast Opening Device DOR20, instruments of data acquisition and processing, and a transducer of reference.