DISCONTINUOUS LEVEL METER AND LEVEL TRANSFORMER FOR SAME Russian patent published in 2007 - IPC G01F23/26 

FIELD: measuring equipment, possible use for measuring free-flowing dielectric products.

SUBSTANCE: discontinuous level meter contains clock impulse generator, counting device, control block, transformers of level to electric signal positioned sequentially along height, number of D-triggers in form of capacitors corresponding to number N of transformers, AND elements and charge-sensitive amplifiers. Also, device additionally contains one more counting device, two comparators, while outputs of all charge-sensitive amplifiers are combined and connected simultaneously to inputs of both comparators. Output of each comparator is connected to first input of appropriate counting device, while second inputs of both counting devices are combined by common bus with control device. Transformer of level to electric signal for discontinuous level meter is made in form of capacitor, consisting of cylindrical body of electro-isolating material with two rods driven through it. Rods are sensitive electrodes of capacitor and are positioned in diametric plane of cylinder symmetrically to cylinder axis. Analogically, screening rod is mounted additionally inside the body, positioned in the same plane along cylinder axis, connected to common bus, while length of part of screening rod projecting above cylindrical body does not exceed two thirds of length of projecting part of capacitor electrode rod.

EFFECT: increased precision of discontinuous level meter, due to prevention of false activations when product sticks to electrodes of level transformers, and also prevented influence of faulty sensors in measurement process.

2 cl, 3 dwg