Objet de la recherche «with».

must be taken in compliance with highly specific guidelines or the measurement results will not be representative for the system and not lend themselves to comparison with others. Apart from absolute [...] cleanliness for all devices coming into contact with the fluid to be sampled, these guidelines also stipulate the correct place for oil sampling, i.e. somewhere a representative distribution of solid particles

In connection with valves , this means that the devices are integrated into the pipelines.

Valve with four controlled ports. For directional valves: Inlet, cylinder side A and B, outlet.

Signal area in which the signal input , signal linking and signal processing are with electrical components. These are predominantly switches, relays and contactors. Electric signal processing has become [...] elements contain moving parts that are subject to wear and also require relatively long switching times with a large space envelope.

Is used to stabilise closed circuit position control systems and together with velocity feedback has an optimal action in these circuits. On poorly damped drives (such as hydraulic drives) acceleration [...] possible significantly higher loop gain than P controllers . However, this advantage drops off quickly with increasing damping. Acceleration feedback requires a control element that is as fast as possible.

Pressure and flow valves with digital adjustment of the pressure and the flow rate by digital cylinders or by electrical stepper motors. While only a limited number of steps are allowed with cylinder actuation

Increments are delivered in the form of electrical pulses and are added together with the same preceding sign in accordance with the direction of movement. What the counter shows is indicative therefore of

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 calculated (DIN [...] (DIN ISO 2909) and for the "conventional" mineral oils it lies between 95 and 100 and for oils with a flat VT curve ( HV oils ) it is around 160 and above.

oil leaking out. This is achieved, for example, using a pump with a pressure controller or a small pump or even a hydraulic accumulator , with the dimensions of both reflecting the amount of oil being leaked

working primarily with reflective silencers with an expansion chamber, in which the primary sound wave is extinguished by a second wave of the same amplitude and frequency, but with a phase position shifted [...] reduces the pressure (pulsation) fluctuations and therefore reduces the noise produced in connection with this, without preventing the transport of the fluid. In hydraulics : The silencer is intended to reduce