Conversion Factor Calculation - GE Bently Nevada 3300/25 Operation Manual

3300/25 Dual Accelerometer Input Monitor Operation Manual
If the transducer signal is simulated by a function generator, Vsig is the peak or
RMS signal level.
2. Calculate the front panel meter reading:
Where:
'Vsig' is the input voltage to monitor.
'K' is the conversion factor is from the tables below.
'F' is the frequency of the input signal.
'Front Panel Meter Reading' is the value displayed on the front panel.
Scale Factor = 100 mV/g, BB and CC options 5,6,15,16 and 17.
Input measured in
peak
RMS
21.3.1

Conversion Factor Calculation

This is how the conversion factor, K, is calculated:
{ } {
peak to RMS × units
{Peak to RMS}:
= 1.414 if input is in RMS
= 1.0 if input is in pk
{Units Conversion}:
for 100 mV/g to in/sec (peak) output:
g 32 . 174
ft
×
. 0 100 V g
for 100 mV/g to mm/sec (peak) output:
g 9806 7 .
mm
×
. 0 100 V g
140
K
Vsig × = Front
( F Hz )
Conversion factor for
output measured in
}
conversion ×
12 in
sec
×
ft
sec
Panel Meter Re
in/s (peak)
K = 614.48
K = 869.00
1
= K
2 × π
ading
Conversion factor for
output measured in
mm/s (peak)
K = 15,607.77
K = 22,072.72