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Level Ranges
On instruments and display modes capable of displaying velocity or displacement
then note that as the highest velocity or displacement reading on each range is
a function of frequency, no precise figures can be assigned to individual ranges.
Whole Body Vibration Mode (WBV)
Transducer = 100mV
Acceleration : Metric
Range 1
0.002 – 10.0 ms
Range 2
0.010 – 50.0 ms
Range 3
0.020 – 100.0 ms
Range 4
0.100 – 500.0 ms
* for a dB reference level of 1e
Acceleration : Imperial
Range 1
0.006 – 33.0 fts
Range 2
0.03 – 164.0 fts
Range 3
0.06 – 328.0 fts
Range 4
0.30 – 1640.0 fts
Transducer = 1000mV
Acceleration : Metric
Range 1
0.010 – 35.0 ms
* for a dB reference level of 1e
Acceleration : Imperial
Range 1
0.03 – 115.0 fts
-2
Range 1
-2
Range 2
-2
Range 3
-2
Range 4
-5
subtract 20 from both the lower and upper dB levels
-2
Range 1
-2
Range 2
-2
Range 3
-2
Range 4
-2
Range 1
-5
subtract 20 from both the lower and upper dB levels
-2
Range 1
Page 100
Acceleration : dB
66.0 – 140.0 dB
80.0 – 154.0 dB
86.0 – 160.0 dB
100.0 – 174.0 dB
Acceleration : g
0.0002 – 1.0g
0.001 – 5.0g
0.002 – 10.0g
0.010 – 50.0g
Acceleration : dB
80.0 – 151.0 dB
Acceleration : g
0.001 – 3.5g
-6
(ref 1e
) *
-6
(ref 1e
) *
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