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Verfügbare Sprachen
4.2
Velocity
Velocity is the parameter most frequently used and is applied to vibration measurement in line with ISO 2372, BS
4675 and VDI 2056 ISO 10816. Velocity is measured in mm/s (inch/s).
Machine vibration (DIN ISO 10816)
Group
Definition
Base
11.00 ... ∞
7.10 ... 11
4.50 ... 7.10
3.50 ... 4.50
2.80 ... 3.50
2.30 ... 2.80
1.40 ... 2.30
0.00 ... 1.40
Explanations:
Class 1 – big machines (P: 300 kW ... 50 MW), electrical machines with an axle height h of ≥315 mm
Class 2 – medium-sized machines (P: 15 kW ... 300 kW), electrical machines with an axle height h of 160 ... 315
mm
Class 3 – pumps with multiblade rotors and separate drive P ˃15 kW
Class 4 – pumps with multiblade rotors and und direct drive P ˃ 15 kW
A – vibration good
B – vibration ok
C – vibration not ok
D – vibration prohibited
Vibration velocity measurements should be made in three axis directions (X, Y and Z axis), vertical to the surface
of the machine housing.
4.3
Displacement
Due to its good low-frequency response, this parameter is generally used for low-speed machines. The unit of
measurement for this parameter is mm.
5
Instructions
5.1
Measurement
Connect the sensor you have chosen to the device.
Switch on the device by means of the Power key and place the sensor at the object to be measured.
For even surfaces, the magnet included in the delivery content is very suitable.
EN - 10
1
big machines
medium-sized machines
P = 300 kW ... 50 MW,
P = 15 kW ... 300 kW,
electrical machines with
electrical machines with
an axle height h of ≥315
an axle height h of 160
mm
hard
stretch
hard
D
D
D
C
C
B
B
B
B
A
B
A
A
A
A
A
2
pumps with multiblade
rotors and separate drive
P >15 kW
...315 mm
stretch
hard
D
D
D
D
D
D
D
C
C
C
B
B
C
B
B
B
B
B
B
A
A
A
A
A
3
4
pumps with multiblade
rotors and direct drive
P >15 kW
stretch
hard
D
D
C
D
B
D
B
C
A
C
A
B
A
B
A
A
stretch
D
D
C
B
B
B
A
A
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