PAGE 6
S
E
N
S
O
R
S
AND
INS
T
R
UM
E
NT
AT
IO
N F
O
R
MACHIN
E
CO
NDIT
IO
N
MON
ITO
RI
NG
- Resistor value must be less than: (Vsupply
– 12) x 50.
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
640BX0
640BX1
640BX2
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
641BX0
641BX1
641BX2
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
645
646
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
