Schenck Vibrocontrol 110 C01 - Definitions

VC 1100 Overview
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© Schenck VIBRO GmbH, D-64273 Darmstadt, November 97 C01 / C02 - C11 / C12 1-15
Definitions
Several terms are commonly used for measured vibration para-
meters. The following is a summery of terms used in this manual.
Signal Detection Type:
Zero-to-Peak Value *)
Definition: The maximum deviation of the absolute value
of the vibration signal from zero.
Used here: peak or pc
Other terms: peak-value, amplitude, single amplitude
Signal Detection Type:
Peak-to-Peak Value *)
Definition: The maximum distance between peak nega-
tive and peak positive of the vibration signal.
Used here: peak-to-peak or ppc
Other terms: amplitude, double amplitude
Signal Detection Type:
Root-Mean-Square Value
Definition: The square root of sum of the squared ampli-
tudes over a period of time.
Describes the energy content of a vibration
signal.
Used here: rms
Other terms: effective value, true rms value
*) VIBROCONTROL 1100 measures the true rms value.Peak
values are calculated from the rms value using the formulae:
Beispiel:
zero-to-peak value = rms value x 1.41 [pc]
peak-to-peak value = rms value x 2.82 [ppc]