Liquistation CSF48
8 Endress+Hauser
Dosing system with capacitance sample sensor
a0011597
Capacitance dosing system
1 Hose connection for the vacuum pump
2 Graduated dosing beaker
3 Graduated dosing tube, white and blue scale
4 Capacitance level sensor
Level detection principle
When the level of medium in the dosing beaker changes, the capacitance of a capacitor partly formed
by the liquid also changes.
The capacitance sensor ensures rapid sample detection in foaming media and media with a high fat
content as well as in media with a conductivity < 30 μS/cm. In the case of the latter, only capacitance
level detection is possible.
Sample dosing with/without pressure
Sample dosing without pressure is the factory setting for all standard applications in which the
sample medium is taken from an open channel or a gravity line. The excess sample can flow back
under atmospheric pressure.
Sample dosing with pressure is selected for applications in which the sample is taken from a pipe,
or for applications involving a low suction height and a low sample volume. In such instances, the
sample medium cannot flow back on its own. The maximum pressure in the pipe must be <
0.8 bar. Pressure is applied and the excess sample is forced out of the dosing beaker and back to
the sampling point.
The sampling volume is set by adjusting the dosing tube. The white "A" scale applies if dosing
without pressure, and the blue "B" scale applies if dosing with pressure.
To Next Page
Loading...
