Hydrometry. Water level measuring devices seo-ignore in the frequency range 1/3

in the frequency range 1/3 octave 100 Hz to 3150 Hz in accordance with ISO 717‑1

Automated gearbox designed for automated operation

which apply only to this range of voltages

A differentiation between binders for stiff and flowing mixtures is introduced

4 Piping passing through structures

Hydrometry. Water level measuring devices seo-ignore in the frequency range 1/31 Scope This International Standard specifies the functional requirements of instrumentation for measuring the level of water surface (stage), primarily for the purpose of determining flow rates. This International Standard is supplemented by an annex providing guidance on the types of water level measurement devices currently available and the measurement uncertainty associated with them (see Annex A).