Ricerca di "fluid's".

Resistance of a liquid to changes in viscosity under shear stress (CETOP RP 100).

kinematic viscosity indicates whether a hydraulic fluid is thin or viscous at a certain temperature, and therefore whether the friction between the fluid layers is lower or higher. This also has an impact [...] dynamic viscosity and a fluid's density: In hydraulics kinematic viscosity is the usual parameter for viscosity. This parameter changes with the temperature of the hydraulic fluid. ν was previously given

Gas (air) volume above the maximum fluid level in a vessel that is intended to absorb the expansion in the volume as the temperature of the fluid changes (CETOP RP 100).

Characteristic of a hydraulic fluid to separate from contamination by means of rising (air) or sinking (solids). Air separation capability: Characterises the ability of a hydraulic fluid to separate out undissolved [...] due to leaks, turbulence in the tank or due to cavitation in the hydraulic fluid. It must be separated out again before the fluid is drawn in again by the pump, as free air has a very negative effect in [...] in hydrostatics installations. The air separation capability is primarily dependent on specific fluid characteristics, the operating viscosity, contamination and the bubble size. It is determined according

HFB fluid

HFC fluid

Filter on the hydraulic fluid tank that filters the air flowing in as the pump draws fluid to prevent contamination by this route. Its filtration grade should correspond to that of the oil filter.

then the compression energy stored in the fluid is suddenly released, as a result the compression volume at the start meets at high speed the column of fluid in the drain line and causes there a measurable [...] measurable and audible pressure increase ( energy content of a hydraulic fluid).

temperature of the pressure fluid in the tank. However, this method constitutes a rough estimate and does not allow conclusions to be drawn regarding the temperature of the pressure fluid at certain locations [...] the system. For example, the temperature of the pressure fluid may be very high at certain throttle points. If the temperature of the pressure fluid must be known at certain points within the hydraulic system [...] The temperature of the hydraulic fluid in hydraulic systems can be measured either with simple measurement devices (thermometer) or with a measuring device that issues signals to the control unit. The

valve and such that the hydraulic fluid flow in one direction must flow through the throttle (and is reduced in the process), while in the other direction the hydraulic fluid flows unthrottled via the check