Frequency Response Facility
In a frequency response experiment, the gas phase above a porous solid is subjected to volume modulation. The phase-shifted pressure signal is detected. From the intensity and the phase shift, conclusions can be drawn about the diffusion and sorption behavior of the gas in the porous solid.
Technical data
| Frequency range of the volume modulation |
10-3 to 10 Hz | |
| Working pressures (freely selectable) |
10-3 to 10 mbar | |
| Sample preparation | < 10-6 mbar; max. 200 °C |