Searched for "fluides".

Device used to add heat to the hydraulic fluid. It is required where the temperature of the fluid should also be constant at the start of the operating period. The preheating normally takes place electrically

removed from the system in the form of heat. In fluid technology, these losses occur due to friction as a result of the viscosity of the pressure fluid, friction in the case of flow disturbances (vortices

group of fire resistant fluids of class HFD. In Germany chlorinated hydrocarbons are only used in closed hydraulic systems in coal mining due to their PCB content (HFDS fluids group). They cause problems

eccentric mounting in relation to the rotor. External support requires internal fluid admission in the displacement chambers as fluid drawn is in. Application: vane pumps , valve-less radial piston pumps . Opposite:

barometric pressure of a column of fluid (Figure F 23) . They are only suitable for measuring low pressures or differential pressures. Alcohol, water or mercury is used as the fluid. Vertical column pressure gauges

characteristics of a fluid or adds new characteristics (CETOP RP 100). The natural substance mineral oil is lacking a series of characteristics for its tasks as a hydraulic fluid; these characteristics

The particle size of the contamination in a hydraulic fluid is spread over a wide area. In view of this fact, contamination classes have been created that set out the contamination in SAE-ASTM-AIA and [...] contamination classes also form the basis for the determination of the degree of purity of the hydraulic fluid after the filter .

Device for measuring pressure levels in fluid media. They may function directly (e.g. vertical column pressure gauge ) or indirectly, whereby elastic deflections, for example, are used to record the pressure [...] pressure level. The pressure gauges used in fluid technology almost always operate indirectly via measuring devices with a spring, whose deflections are relayed to a pointer. In terms of the structure,

During the operation of a hydraulic system the particles of dirt that occur in the pressure fluid . They are either Added from the outside, e.g. due to leaks, a poor breather filter or are due to inadequate [...] are metal chips as well as abraded material from the seals or Ageing products from the hydraulic fluid (sludge among others). Sometimes there can also be water (that has entered the system or condensation)

Contamination of the hydraulic fluid in a hydraulic system prior to the first flushing. It comprises the contamination that is in the hydraulic fluid itself prior to filling the hydraulic system and the