LEVEL GAUGE AND A SIGNALS PROCESSING BLOCK FOR ITS EXECUTION Russian patent published in 2007 - IPC G01F23/26 

FIELD: the invention refers to technique of measuring of heat-carrying agent in water-heating boilers.

SUBSTANCE: the level gauge has a sensitive element 1 compensating the sensitive element 2 and the signals processing block 3 of the level gauge. The sensitive element 1 is fulfilled as a monopole logging in the shape of a conducting rod in a dielectric covering and connected by way of a communication line with the first output of the signals processing block 3. The compensating sensitive element 2 is fulfilled in the shape of the section of a communication line with one free one end, whose other end is connected to the second output of the signals processing block 3. The indicated communication line and the section of the communication line for connecting with the signals processing block 3 are identical according to their sizes with grounded communication cables having equal diameters and equal length. The signals processing block 3 has a high frequency generator 10, an arrangement 11 of galvanic outcome in the shape of a transformer, an amplifier 12 of high frequency, the source 13 of reference voltage, a measuring resistive bridge 14 fulfilled asymmetric, a filter 15 of low frequencies and an comparator 16. The technical result is simplification of the construction of the level gauge, increasing of noise immunity, compactness, comfort of assembling and application.

EFFECT: the main merits of the level gauge-noise immunity, comfort in application and longevity of operation.

7 cl, 3 dwg