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Process Tomography Systems

Tomography involves taking measurements around the periphery of an object (eg process vessel or patient) to determine what is going on inside. The best known technique is CAT scanning in medicine, however process tomography instrumentation is cheaper, faster and more robust. ITS provides electrical tomography instrumentation, software, sensors and technical support. This enables customers to continuously scan a volume and determine the distribution of electrical properties as they change over time.

Measurement principles

The P2000 operates by taking data from an array of electrodes in contact with the process media. These are either mounted on a baffle / dip-pipe or around the circumference of the pipe or vessel. For a standard 16-electrode sensor, 104 voltage measurements are taken every 20 milliseconds using an AC current and 4-electrode measurement technique. The images show the electrical field lines spreading out into the vessel from a single measurement. They are affected by the presence of conducting (red) and non-conducting (blue) regions.


Process Tomography FAQ                       

Assessment of mixing quality for an industrial pulp
mixer using electrical resistance tomography


A typical Tomography System:


Komplettes ITS System- Mixing Rig, M3000 und 2D Auswerte Software
Hompage von ITS


A Tomography Systems contains of the basic Instrument, Sensors and Software.

There are two types of Instruments:

PDF-Logop2+ Datasheet

Z8000 Datasheet

V5R Datasheet

m3c Datasheet



ERT ECT
Parameter Conductivity Permittivity
Processes environment Conducting (solutions)
Dry (air / oil)
Typical processes
Mixing, flow of slurries Powder flow; fluidized beds
Sensors Internal
External
Reference Single (mean) Dual (max; min)
Also sensitive to
Temperature Moisture
Sensors

following sensors are available for your ITS System,  depending on your application:

  • Pipelinesensors: for installation in pipes
Rohrsensor

  • Vesselsensors: sensor array for installation in tanks or vessels.
Behältersensor
  • Tomography Rig: For measurements of mixing processes in gas inlets, as a linear or circular sensors array or as a sensor array for circulation tubes.
Tomography Rig

Software

The Software has some representation features:

  • Tomography Software: you get 2Dimensional Images of your process.
Example for the Data with 2d software:
2D Darstellung der gewonnen Messdaten

  • Statistic  Software: you get 1-Dimensional graphs of eg. the time vs. conductivity distribution or other parameters.

  • Export Data