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Function
Equation
Exposure Time
Allowed before
Action Level
Reached
(Vector Sum)
HARM or WBV
t
EAV
Vsum
2
8
EAV = Exposure Action Value
Vsum = Vector Sum (HARM or WBV)
Exposure Time
Allowed before
Limit Level
Reached
(Vector Sum)
HARM or WBV
t
ELV
Vsum
2
8
ELV = Exposure Limit Value
Vsum = Vector Sum (HARM or WBV)
Exposure Time
Allowed before
Action Level
Reached
(Dominant Axis)
HARM or WBV
t
EAV
dom
2
8
EAV = Exposure Action Value
dom = Dominant Axis (HARM or WBV)
Exposure Time
Allowed before
Limit Level
Reached
(Dominant Axis)
HARM or WBV
t
ELV
dom
2
8
ELV = Exposure Limit Value
dom = Dominant Axis (HARM or WBV)
Exposure Time
Allowed before
Action Level
Reached
(VDV)
t
EAV
vdv
4
logtime
VDV
4
logtime = total measurement duration in seconds,
minutes or hours
EAV = Exposure Action Value
VDV = Vibration Dose Value
Exposure Time
Allowed before
Limit Level
Reached
(VDV)
t
ELV
vdv
4
logtime
VDV
4
logtime = total measurement duration in seconds,
minutes or hours
ELV = Exposure Limit Value
VDV = Vibration Dose Value
Peak
Pmax = The peak level of the weighted instantaneous
acceleration, velocity or displacement over the
measurement period