Product category:
Level and tank contents instrumentation
News Release from: Winton House Instrumentation | Subject: Future Instrumentation level
Edited by the Processingtalk Editorial
Team on 08 June 2004
New range of capacitive level
measurement devices
New 'Future Instrumentation' capacitive level measurement devices are superbly engineered products that uniquely match enhanced design and performance with the most economic cost models available
Winton House Instrumentation is introducing the 'Future Instrumentation' range of capacitive level measurement devices These superbly engineered products uniquely match enhanced design and performance with the most economic cost models available
This article was originally published on Processingtalk on 2 Sep 2004 at 8.00am (UK)
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Leading the range is the FT2000 or Fitron device that combines cutting edge design and materials with a sub GBP250 list price.
The Fitron series point level product is a line powered RF driven shield 'switch' used to detect the presence or absence of material, or the difference between two materials on the probe surface.
The special 'Driven Shield' technology ignores coatings or build up while maintaining the calibration trip point.
The device does not use tuning forks, or vibration, thus removing major points of measurement weakness.
RF Driven Shield technology senses the difference in the capacitance created by the dielectric (K) properties of materials between the calibrated normal and abnormal condition.
Since all materials possess a unique dielectric (K) property, it is simple to calibrate the switch for the difference between air and any other material for high or low level alarms according to the formula; C at a point = K (dielectric) x A (area of the plates)/d (distance between plates).
It is also simple to calibrate for a difference between two materials such as an electrical interface, such as water/oil, based on the same equation.
The electronic unit has a single calibration potentiometer and a three coloured LED; red for alarm, yellow for electronic failure, and green for normal.
A field selectable jumper allows the same unit to be configured for either low level or high level failsafe.
The special Driven Shield circuit stabilises the internal capacitance of the probe and provides an electrical barrier so coating or build up on the sensor cannot provide a path to ground.
The unique design of the probe limits the distance to ground to prevent static build-up, increases the sensitivity of the probe, eliminates concern about build-up in the nozzle and provides exceptional probe strength.
Future technologies to follow from 'Future Instrumentation' include a point level device which ignores a 15mm conductive coating, whilst some other devices cannot tolerate conductive coatings, which produce a false trip.
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