Residual contamination
and counted using automatic counting devices. The result is a profile of contamination in accordance with NAS 1698 or ISO 4406. The term residual contamination should no longer be used and is to be replaced
Control
Devices and functions involved in with the task of performing the spatial coordination and synchronisation of the individual sub-functions in a process. The sequence of all sub-functions is to be stored [...] elements of the open loop control system are operated under control. This is often the case, for example, with numeric controls. Distinguishing features of controls include the representation of information (
Diagnostic systems
(Figure D 10) . Specifically, this means: Checking the settings and operation for errors in the dialogue with the user, Detection of errors in the function of devices and systems, Localisation of errors, i.e [...] g. due to malfunctions from wear (early detection of damage), Indication or errors in the dialogue with the user. There is a series of possible solutions for setting up diagnostic systems - depending on
Manual mode
still predominant is mobile hydraulics . In addition, the term manual mode is also used in connection with DIN 66 257 when, for example, the operator controls an NC machine manually using adjustment elements
Labyrinth seal
of the gap assuming a meandering or zigzag pattern ( Figure L 1 ). Labyrinth seals — mainly filled with grease — are used in hydraulics to protect roller bearings in heavily contaminated atmospheres.
Analogue
physical variable is analogous to another physical variable or mathematical variable if it changes with a specific relationship to the first variable. The relationship between these two variables can be
Programmable control
memory programmable control with random access memory (RAM) as program memory ( semiconductor memory ) the entire contents of which can be changed, even only slightly, without mechanical intervention in
Piston motor
The radial piston motor tends to predominate with its special pneumatic motor variety. The piston motor supports high loads across all rotation speed ranges and is particularly suitable for low rotation
Digital/analogue converter
digital input signals into analogue output signals, i.e. into a proportional DC voltage. In conjunction with digitised signal processing provided by microelectronics, D/A converters are required to be able to
Disposable filter element
manner. Disposable elements include most volume (bulk) filters . Alternative: Washing out the element with ultrasound in the case of screen filters