FIELD: measurement.
SUBSTANCE: invention relates to measurement equipment related to control of elevation positions of structural units. Video sensor for measuring level of liquid in vessels of hydrostatic levelling device comprises video camera and round light-emitting diodes installed around its lens, also contains mask fixed on front side of video sensor, containing central round window, which diameter is less than the video camera lens inlet, and peripheral round openings whose diameters are smaller than the LED diameters, wherein central window is located opposite to video camera lens, and peripheral windows - opposite to light-emitting diodes.
EFFECT: technical result is higher accuracy of measuring liquid level in vessels of hydrostatic levelling device.
1 cl, 2 dwg
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