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are added (normally phosphate compounds). The wear protection capacity is determined by the Vickers test, in which the debris on a vane pump is measured under defined conditions.

all parameters related to defining the β value must be stated, i.e. the complete test report. In ISO 4572 only the test procedure for particle size x = 10 μm is standardised. For all other particle sizes

conditions in an environment containing water that continues as far as mineralisation (OECD screening test). The biodegradability, the pollution hazard for the ground and water, and the freedom from hazardous

generators. Signal generators are an important tool in measurement technology to generate reproducible test signals . As function generators, they may also simulate the effect of process-specific signals on

g. measuring instrument or measuring devices ) on which the error and also the effects in defined test conditions are within defined limits; they can have a class identifier that mostly corresponds to

Standard measure for the hardness of elastomers , in which the penetration depth is measured in a test specimen. A distinction is made between Shore A for softer specimens (up to approx. 90 Shore A) and

The α values is defined by the multipass test according to ISO 4572. It is a measure of the total quantity of ACFTD supplied to the filter element until the permissible final pressure difference is reached [...] flow rate QN: γ = contamination with ACFTD in the flow rate, Q = flow rate through the filter, τ = test time until the permissible final pressure difference is reached. The α value corresponds to the term

In some test procedures on control processes, the control circuit is "opened". As a result an input and an output are produced at the interface. The opened circuit can then be treated as a single control

filter cumulative efficiency is normally stated in % . It is related to the value βx from the multipass test .

Also called the apparent dirt holding capacity. Dirt holding capacity is the quantity of test dirt that must be added before a defined differential pressure Δp is reached. In addition to the α-value, the