CESVA SC310, Руководство пользователя

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SC310
User’s Manual
131
• Numeric average acceleration (RMS) with evaluation time T, in real time for the one third
octave band centred in the frequencies 1, 1.25, 1.6, 2, 2.5, 3.15, 4, 5, 6.3, 8, 10, 12.5, 16,
20, 25, 31.5, 40, 50, 63 and 80 Hz (without frequency weighting) expressed in m/s
2
and as
an acceleration level in dB referred to 10
-6
m/s
2
.
This screen shows the 20 measured one third octave bands, to display it then press
and .
Pressing you accede to the numeric overall analyser with weighting W
m
screen.
Numeric overall analyser with weighting W
m
screen
This screen shows, in real time the next information:
• Average acceleration (RMS) with frequency weighting W
m
and evaluation time T;
expressed in m/s
2
and as an acceleration level in dB referred to 10
-6
m/s
2
.
• Peak acceleration (PEAK) with frequency weighting W
m
and evaluation time T; expressed
in m/s
2
and as an acceleration level in dB referred to 10
-6
m/s
2
.
• Crest factor (CF): quotient between the peak acceleration and the RMS acceleration.
Expressed in linear and logarithmic (in dB) format.
• MTVV: Maximum Transient Vibration Value. Maximum value of the acceleration with the
frequency weighting W
m
and with slow exponential averaging (
τ
= 1 s) in the evaluation
time T. Expressed in m/s
2
and as an acceleration level in dB referred to 10
-6
m/s
2
.
• VDV: Vibration Dose Value. Fourth power root of the integral of the fourth power of the W
m
weighted instantaneous acceleration. With the evaluation time T. Expressed in m/s
1,75
.
Pressing you accede to the Graphic Spectrum analyser 1/3 + K screen.