Journal Article10.1088/0957-0233/7/12/012
Electrostatic, inductive ring probe bandwidth
TL;DR: In this article, the authors considered the bandwidth of inductive ring probes and derived a general frequency response function for any inductive, non-intrusive probe, sensor, transducer, etc.
read more
Abstract: Electrostatic, inductive, non-intrusive probes are employed for measuring the electric charge as well as the mass flow rate, volume loading, and mean flow velocity of solid particles especially while travelling through pipes of pneumatic transport or in ambient air when a flux of those particles forms a rather compact column-like jet of a nearly constant cross sectional area. The bandwidth of such measuring devices is a very important factor which should be determined carefully, or even planned in advance, before designing the probe itself intended for the use under well defined conditions. In the paper the bandwidth of the inductive ring probes is discussed. To find the probe bandwidth the derivation of a general formula is presented along with the accepted assumptions and an original way of formulation and consideration of that problem. The general formula obtained is an inductive ring probe frequency response function and permits the bandwidth of any inductive, non-intrusive probe, sensor, transducer, etc, to be easily determined for given mean flow velocities of particles and probe widths.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Sensing characteristics of electrostatic inductive sensor for flow parameters measurement of pneumatically conveyed particles
TL;DR: In this article, the spatial sensitivity, spatial filtering effect, temporal frequency response characteristics and bandwidth are important parameters influencing the accuracy and response speed of a ring-shaped electrostatic inductive sensor.
95
Recent Developments in Smart Drying Technology
Ya Su,Min Zhang,Arun S. Mujumdar +2 more
TL;DR: In this article, a generalized definition of smart (or intelligent) drying technology is proposed and discussed, and several applications of these smart drying technologies are analyzed; these include biomimetic systems, computer vision technology, microwave dielectric spectroscopy, near infrared reflectance (NIR) spectroscope, ultrasonic techniques, electrostatic sensor technology, and control systems for the drying environment.
84
Finite-Element Modeling of Electrostatic Sensors for the Flow Measurement of Particles in Pneumatic Pipelines
Jan Krabicka,Yong Yan +1 more
TL;DR: A novel approach to the study of the charge induced onto electrostatic sensors based on fitting a Lorentzian curve to the results of a finite-element model of the electrostatic sensor and pipeline is presented.
78
Electrostatic Nonintrusive Method for Measuring the Electric Charge, Mass Flow Rate, and Velocity of Particulates in the Two-Phase Gas–Solid Pipe Flows—Its Only or as Many as 50 Years of Historical Evolution
TL;DR: In this article, a ring-shaped metal electrode called a probe is used to measure the electric charge carried on solid particles. But the method is not suitable for the measurement of electric currents.
60
Velocity measurement of pneumatically conveyed solid particles using an electrostatic sensor
TL;DR: In this article, the authors proposed a method to measure the mean velocity of solid particles based on the spatial filtering effect of the electrostatic sensor and derived a general formula to determine the relationship between the spatial frequency characteristics of the sensor and solid particle velocity.
58
References
Inductive non-contact method for measuring a velocity
TL;DR: In this article, an inductive non-contact method of velocity measurement of discontinuous dust fluxes is developed and verified in laboratory experiments and it was found that the measuring procedure is both quick and sensitive, the flow of particulates is not disturbed by the measuring ring probes applied, the measuring system is reliable and simple and the measurements performed are also simple.
7
Commercially Available Flowmeters and Future Trends
TL;DR: In this article, the authors classify flowmetering devices into 12 groups, and present guidelines on flowmeter selection and commercial availability, as well as new methods at the research stage.
7
The Techniques of Flow Measurement (Part 2)
TL;DR: The intention is to supplement more formal education and training with practical advice and explanation for instrument users, and much of the advice may be of value to manufacturers and contractors.
6
Diffusion processes of small spots of electrostatically charged molecules in subsonic grid turbulence
TL;DR: In this paper, a technique has been developed for the production of small spots or volumes of ionized gas and the processes of diffusion of these spots have been investigated for the case of emission in a nearly non-turbulent flow (wind-tunnel) as well as in the turbulent flow created behind a square mesh-grid.
3
•Book
Cross Correlation Flowmeters, Their Design and Application
M. S. Beck,A. Plaskowski +1 more
- 01 Jan 1987
TL;DR: This book provides a comprehensive review of the theory and practice of cross correlation flowmetering, and is aimed at three potential audiences: the graduate student in engineering or science who requires an introduction to the relevant signal processing theory; the advanced research and development engineer who requires the Theory and its practical implementation in considerable depth; and the industrial instrument engineer who is interested in the practical aspects of transducers and installation features for specific applications.