| 摘要 |
A system for the determination of an electrical characteristic, in particular the streaming potential or zeta-potential, of a particles containing liquid. The system includes: - a measurement apparatus which comprises: - a housing with a measuring conduit therein for said liquid, a first electrode and a second electrode spaced from each other along the measuring conduit, so that each electrode contacts said liquid in said measuring conduit, a signal processing means connected to said first and second electrodes for the determination of the electrical characteristic of said liquid, a particle retaining means, for example a sieve, at a location in said measuring conduit, which particle retaining means allows for the build up a plug of particles. The system further includes a vacuum device that in fluid communication with the measuring conduit allows to establish a pressure difference variation across the plug of particles for the purpose of determination of the electrical characteristic. |
