Hakuteksti "*".

Takes into account along with the compressibility of the pressure fluid also the elasticity of the surrounding components as well as the connection line between the valve and . The equivalent bulk mod

The oil samples needed to check the degree of contamination of hydraulic fluids must be taken in compliance with highly specific guidelines or the measurement results will not be representative for th

(Opposite of pilot valve). With pilot-controlled valves, the main valve is the actual working valve actuated by the pilot valve .

Characterises the Viscosity/temperature characteristic of a fluid. The smaller the change in viscosity with respect to temperature, the higher the VI (CETOP RP 100). The VI is mathematically calculate

Factors influencing the structure and function of hydraulic systems that result, amongst other things, from the task formulation. This includes environmental conditions, such as the range of the worki

Discrete controllers which, when a certain control deviation is exceeded, change the suddenly at various stages (DIN 19 225). Example based on a two-point controller: temperature control via a device

Fire-resistant fluids based on a solution of polymers (polyglycols) in water at a ratio of around 60:40. HFC pressure fluids have a viscosity of 30 to 45 mm2/s at 50°C and may be used instead of miner

Several electrical sensors react more or less sensitively to temperature changes, which move the zero point and possibly change the sensitivity. They must therefore be balanced out by suitable measure

Multiple pump whose units supply separate circuits with a pressure-limiting valve because their working cycles overlap. If a constant pump is involved, the installed power will be equal to the total f

In order for the hydraulic fluid to deliver sufficient lubricating effect in plain bearings and under seals , it must have sufficient wetting ability. This is generally the case with HLPD oils .