FIELD: measurement equipment.
SUBSTANCE: invention relates to measuring equipment, it is a position measurement system and is intended for determination of extreme positions (xmin, xmax) of control rods of nuclear power plants. The system comprises a channel inside which the rod moves. On one end of the rod the magnetic element is located, along the channel the sensing elements - reeds - are located which detect a magnetic field with the intensity above the threshold value. Also the system contains the inductive measuring system which comprises inductive coils and the ohmic unit forming series connection with at least one coil and a circuit connection with the reed. The circuit device shunts the ohmic block at short circuit of the reed.
EFFECT: improvement of reliability and accuracy.
11 cl, 4 dwg
