97029 Rev.C.2 09/2020

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The equivalent peak to peak displacement values in mils are shown in Table 1a for reference.

For those using the metric system, Table 1b shows the equivalent values. All the values below

are represented in Graph 1.

Table 1a: English (1 g)

Table 1b: Metric (1 g = 9.81 m/s2)

Frequency

Velocity

Displacement

Hz

CPM

in/sec

mils, peak-peak

Peak mode

RMS mode

61.4

3684

1.00

5.18

7.34

100.0

6000

0.61

1.96

2.76

159.2

9552

0.39

0.77

1.09

Graph 1: The relationships between 61.4 Hz, 100 Hz, and 159.2 Hz

Frequency

Velocity

Displacement

Hz

CPM

mm/sec

µm, rms

Peak mode

RMS mode

61.4

3684

25.41

5.18

7.34

100.0

6000

15.61

1.96

2.76

159.2

9552

9.81

0.77

1.09

Constant displacement, µm

Constant velocity, mm/s

Constant velocity, ips

Constant acceleration, 1 g

61.4 Hz for imperial measurements

1 g (acceleration) and 1 ips (velocity)

100 Hz to verify standard

calibration sheet values

159.2 Hz for metric measurements

9.81 m/sec2 (acceleration) and 9.81 mm/sec (velocity)