z8000 EIT
z8000 Electrical Impedance Tomography
New system designed for measurement of rapid flows
The z8000 is essentially a resistance tomography instrument that can also measure impedance; phase and reactance. Impedance can measure real and imaginary parts, which gives another set of data to understand complex materials and how they are distributed in the course of a process. The z8000 can capture data 1,000 dual frames per second, which enables it to measure rapid flows or any process which is fast moving.
In contrast to many systems-based measurement techniques, tomography sensors are able to rapidly sense throughout a volume. Thus providing a dynamic picture of what is going on inside a pipe or vessel, e.g. whether a system is homogeneous.
Whilst our existing technology can measure flow, it can only resolve speeds of up to around 1.5 m/s. The z8000 instrument has been designed for those industries where rapid flows are present, such as the petrochem and the nuclear sectors. The instrument is suitable for multi-phase systems such as the measurement of flowing oil water systems and hydraulic conveying of slurries.
The development of the z8000 provides a reliable system developed to industrial standards to measure fast flows through a pipe or vessel.
The images below are computed using the data exported from the system and were produced using software now available from ITS.
A vertical oil-in-water flow - Oil concentration and velocity distributions taken from the z8000.
Oil Concentation
Oil Velocity
Product Characteristics
- Single modality (ERT)
- Max No of electrodes: 32; 16 x 2 planes arranged in 1 and 2 planes
Benefits to users are:
- Measurement of rapid flows
- Increased process understanding
- More effective process development
- Improved and more consistent product quality
Acknowledgements:
Hua Lia, Mi Wang, Ying-xiang Wu, Gary Lucas (2008)
Volume flow rate measurement in vertical oil-in-water pipe flow using electrical impedance tomography and a local probe
To be presented at the 11th International Conference on Multiphase Flow in Industrial Plant in Palermo, Italy, September 7-10, 2008
