Searched for "*".

All signals, apart from the input signal , required for the functionality and monitoring of a device. These include dither signals , feedback signals, , testing signals and the like (DIN 24 311).

used to provide additional assistance for the controlled subsystem (e.g. an acceleration control circuit). A minor loop does not have to have a subordinate role.

All variables required in valves to convert the input signal into an . They are mainly used for the purpose of power gain (amplification) (DIN 24 311).

The energy required to operate electro-mechanical signal converters ( solenoids , torque motors ), electrical measuring instruments or monitoring devices (DIN 24 311).

Another form of actuation, apart from the main form of actuation, whereby the energy is not dependent on that of the main form of actuation. In general, various methods of manual operation are availab

Water-free, synthetically produced fire-resistant fluids. They rely on the following compounds: Phosphoric ester (HFD R), currently the most widely used HFD fluid; performs worst in terms of fire resi

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

Fire-resistant fluids based on "water in oil", i.e. an emulsion of around 40% water in mineral oil. Not used in Germany (although they are in the UK, for example).

Fire-resistant fluids based on water with 2 to 5% concentrate intended to give the water a minimum level of protection against corrosion and wear. Depending on the composition of the concentrate, emul

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