Ametek BROOKFIELD DVNext Operation Instructions Manual page 101

γ
Where:
θ
M = Strain
= Angular rotation of motor shaft
S = Radial Spring Factor
T = % Torque reading
Where:
θ
M
ω
= Angular rotation of motor shaft
= Rotational speed
t = Time of test
Where:
θ
S cal = Radial spring factor
= Spring windup angle
Where:
θ
cal
= Spring windup angle
cal
v
= Calibration speed
cal
t
= Calibration time (time for 0% to 100% spring windup)
M19-2101 REVISION 2.0
γ
=θ — (S x T)
M
(rad)
(rad)
(rad/%torque)
(%)
(rad)
(rpm)
(seconds)
(rad/%torque)
(revolutions)
D V N E X T R H E O M E T E R - O P E R AT I O N A L M A N U A L
(revolutions)
(fixed at 0.1 rpm) (rpm)
(milliseconds)
101