Abstract: The invention relates to a hydraulic valve device having a fluid connection arrangement (10) and having a displaceable control device (16) for at least partially actuating connections of the fluid connection arrangement (10), wherein the control device (16) can be actuated by two opposing pilot valves and is held in the neutral position thereof by centering springs. By providing at least one throttle position (da1, db1) between each pilot valve and the control device that can be connected for fluid flow between a load probe connection (LFA) and a load indicating connection (LMA) or a load probe connection (LFB), a hydraulic valve device enables fine control for moving loads.

Abstract: A method and apparatus are described, for measuring the angular velocity of a measuring body. In accordance with the present invention, the distance of the measuring body from a sensor varies periodically as the body is rotated, whereby the sensor emits a distance signal dependent on the distance, which distance signal is converted to a frequency-dependent signal in a converter circuit to determine angular velocity in a higher rpm region. To determine the angular velocity (or rpm) in a lower rpm region, the derivative of continuously varying distance between the sensor and a surface or partial surface of the measuring body is employed. In this way it is possible to measure rpm over a wide range down practically to zero.