Level indication system

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Details

73290R, 364562, 340612, G01F 2300

Patent

active

055196390

ABSTRACT:
A system for monitoring the water level of a pressure drum having a pressure column comprises a plurality of electrodes communicating with the column for contacting water and steam within the column. Each electrode has its own location and produces a first output which corresponds to the presence of water or a second output which corresponds to the presence of steam. A discriminator is operatively connected to the electrodes; and the discriminator has an analog-to-digital converter for receiving the output of each electrode and converting the output to a digital signal which represents the water conductivity for each electrode. A central processor is operatively connected to the discriminator for powering the discriminator as well as for receiving the digital signals in order to determine a slope degradation between the conductivity and the location of each electrode in the column. The central processor also determines an inflection point between the water and the steam in the column. An LED display is used to indicate which of the electrodes are located in water and which of the electrodes are located in steam.

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Merli Sales Brochure (no date).
Instruction Manual for the Diamond Merli Control Unit Jan. 1991 and Jun. 1992.
Instruction Manual for the Merli Pressure Vessel Apr. 1991.

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