
3500/42 Operation and Maintenance
Maintenance
163
Example:
To calculate the input voltage for a channel with the following configuration:
Transducer Scale Factor = 19.69 mV/(mm/s)
Full Scale = 100
µ
m pp
HPF = 3 Hz
LPF = 3000 Hz
1.
Convert Metric units to English units.
Scale Factor:
19.69 mV/(mm/s)
×
25.4 = 500 mV/(in/s)
Full-scale:
2.
Calculate the input voltage.
or
Note
The accuracy of the reading will be affected by frequency values less than 20
Hz and setting LPF 5.7 times away from the HPF.
100 m
25.4
= 3.9370 mil
µ
Input
Voltage
(V rms)
=
3.9370
31.8309
0.500
x 0.07071 = 0.4148 V rms
/ 94 8683
.
Input
Voltage
(V pp)
=
3.9370
31.8309
0.500
x 0.2 = 1.173 V pp
/ 94 8683
.
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