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Chapter 10
Function Equations
The following table describes mathematically how the functions available on the
Vexo Vibration Meter are calculated. All calculations displayed are subject to
rounding and/or truncation.
Function
Equation
Acceleration
(Metric)
Aeq
1
T
0
T
ta
( )
a
w
( )
2
ta
( )
⋅
⌠
⌡
d
⋅
:=
ms
2
−
(
)
T = total integration time (seconds)
a
w
(ta) = instantaneous acceleration value
(ta) = time (seconds)
Acceleration
(g)
Aeq
1
9.807
1
T
0
T
ta
( )
a
w
( )
2
ta
( )
⋅
⌠
⌡
d
⋅
⋅
:=
g
( )
T = total integration time (seconds)
a
w
(ta) = instantaneous acceleration value
(ta) = time (seconds)
Running rms
Acceleration
(Metric)
Arms
1
θ
t
θ
−
t
ta
( )
a
w
( )
2
ta
( )
⌠
⌡
d
⋅
:=
ms
2
−
(
)
t = instantaneous time (seconds)
θ
= integration time of the measurement (1 second)
a
w
(ta) = instantaneous acceleration value
(ta) = time (seconds)
Running rms
Acceleration
(g)
Arms
1
9.807
1
θ
t
θ
−
t
ta
( )
a
w
( )
2
ta
( )
⌠
⌡
d
⋅
⋅
:=
g
( )
t = instantaneous time (seconds)
θ
= integration time of the measurement (1 second)
a
w
(ta) = instantaneous acceleration value
(ta) = time (seconds)
