The pressure-dependent burning rate of pyrotechnic propellants can be determined under adiabatic conditions by ignition in a closed pressure vessel.
 

The pressure curve and the gas generation rate of gas generators can be determined in the 60 L can. The speed of the gas generation depends on the temperature.

By drilling from the outside, it is possible to record the internal pressure curve of a gas generator during burning with the aid of a piezo pressure sensor.