Electrostatic monitoring system
AssigneeBestobell Mobrey Limited
InventorNicholas J. Denbow
Life of this patent
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Abstract
A system for monitoring a low conductivity liquid carrying an electrostatic charge and flowing along a pipeline comprises two separately insulated conductive wall sections (M.sub.1, M.sub.3) of the pipeline one downstream of the other. Means are connected to each of these sections for providing a signal representing the relaxation current released from the liquid to each of the wall sections and these signals are processed to provide indications or controls dependent upon the conductivity of the liquid, the relaxation time of the liquid, the streaming current, or the charge density carried by the liquid.
Claims20
A system for monitoring an electrostatic charge-carrying low conductivity liquid flowing along a pipeline, said system comprising two separately insulated conductive wall sections of said pipeline, one downstream of the other and means connected to each of said sections for providing a signal representing the relaxation current released, in use, from the liquid to each of said wall sections.
A method of monitoring a low conductivity liquid flowing along a pipeline and carrying an electrostatic charge, said method comprising obtaining signals representative of the relaxation current released from said liquid to respective wall sections of said pipeline, which sections are longitudinally offset along the pipeline;
- and processing said signals to provide a further signal representative of the conductivity of said liquid or of the streaming current.
Dependencies are inferred from the claim text.