S
E
N
S
O
R
S
A
N
D
IN
S
T
R
U
M
E
N
T
A
T
IO
N
F
O
R
M
A
C
H
IN
E
C
O
N
D
IT
IO
N
M
O
N
IT
O
R
IN
G
Taking Measurements
When measuring the current output from the unit, use the following formula to calculate the vibration level:
Vibration Output = (Measured Output – 4mA) x (Full Scale Vibration Output /16mA)
Measured
mA
642AX0 642AX1 642AX2
4.00
0.0 ips, pk
0.0 ips, pk
0.0 ips, pk
8.00
0.125 ips, pk
0.25 ips, pk
0.5 ips, pk
12.0
0.25 ips, pk
0.5 ips, pk
1.0 ips, pk
15.75
0.37 ips, pk
0.73 ips, pk
1.47 ips, pk
20
0.5 ips, pk
1.0 ips, pk
2.0 ips, pk
Measured
mA
643AX0 643AX1 643AX2
4.00
0.0 ips, rms
0.0 ips, rms
0.0 ips, rms
8.00
0.125 ips, rms
0.25 ips, rms
0.5 ips, rms
12.0
0.25 ips, rms
0.5 ips, rms
1.0 ips, rms
15.75
0.37 ips, rms
0.73 ips, rms
1.47 ips, rms
20
0.5 ips, rms
1.0 ips, rms
2.0 ips, rms
Measured mA
647
648
4.00
0.0 g rms
0.0 g rms
8.00
1.25 g rms
2.50 g rms
12.0
2.50 g rms
5.00 g rms
15.75
3.67 g rms
7.34 g rms
20
5.00 g rms
10.0 g rms
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