Electrical sensing of dispersion behaviour

Investigation of the stability of paraffin–exfoliated graphite nanoplatelet composites for latent heat thermal storage systems

“…This concept has been applied to measure the sediment in fluids such as water and glycerol, noting that a relationship exists between the sediment concentration and capacitance output. [30][31][32][33] Li et al determined that suspended sediment concentrations, over a wide range, were correlated with the outputs of capacitance sensors. 30 The capacitance as a factor of time for each molten sample was calculated from the impedance measured with a Solartron Analytical Model 1260A Impedance/Gain-Phase Analyzer at a constant frequency over a range of time periods -4 to 72 hours, dependent on the test.…”

Novel On-Line Sedimentation Analyzer

“…A comprehensive review is presented in a publication by Williams et al (2). These techniques include light extinction methods (8), ultrasonic sensing (9, 10), radiation imaging (11), pressure sensing (12), and the use of a variety of electrical transducers (see, for example, 13,14). All involve monitoring the variation of some physical or chemical property over a defined sensing volume.…”

The use of electrode probes in determinations of filter cake formation and batch filter scale-up

“…Methods relevant to filtration include the use of intrusive electrodes (Rietema (1953); Baird and Perry (1968); Dobson (1970); Wakeman (1981); Holdich (1990); Tarleton andHancock (1996 and) or pressure probes (Shirato et al (1980); Willis et al (1983); Murase et al (1989);Wu (1994);Fathi-Najafi and Theliander (1995)), flush mounted electrodes (Shirato et al (1971); Shirato and Aragaki (1972)) or pressure probes (Harvey et al (1988)) and X-rays or high energy radiation (Bierck et al (1988); Bierck and Dick (1990); La Heij et al (1996); Tiller et al (1995)). It is noted that similar procedures have also been used to assess related processes such as sedimentation, filter cake deliquoring and microfiltration (Wakeman and Holdich (1984); Wakeman and Vince (1986); Holdich and Sinclair (1992); Shi et al (1993)). Although the measurement techniques employed in filtration differ in detail, the generic arrangements are similar and the advantages and disadvantages can be summarised as shown in Table 1.…”