รุ่น : VB-8220
*Separate professional vibration sensor
*Acceleration : 200 m/s^2
*Velocity : 200 mm/s
*Displacement (p-p) : 2 mm
*RMS, Peak value
*RS-232 and USB computer interface
VB-8220 is accordance with ISO 2954 ""Mechanical vibration of rotating and reciprocating machinery"
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How to analyze the mechanical vibration with VB-8220
ISO 2372, CDI 2056 and ISO 2954
Step 1. Determine the method
Acceleration (mm/s2) is suitable for high frequency (over 1,000Hz)
Velocity (mm/s) is suitable for middle range of frequency (10 to 1,000Hz)
Displacement (mm) is to measure PEAK to PEAK, suitable for low frequency (10Hz to 100Hz)
Step 2. Determine the class of targeted object
|
Velocity(RMS)mm/s | |
Class 1 | |
Class 2 | |
Class 3 | |
Class 4 | |
|
0.28 | |
A | |
A | |
A | |
A | |
|
0.45 | |
|
0.71 | |
|
1.12 | |
B | |
|
1.8 | |
B | |
|
2.8 | |
C | |
B | |
|
4.5 | |
C | |
B | |
|
7.1 | |
D | |
C | |
|
11.2 | |
D | |
C | |
|
18 | |
D | |
|
28 | |
D | |
|
45 | |
Class 1 : small size motor(15KW)
Class 2 : medium size motor(15-75KW)
Class 3 : large motor on hard foundation
Class 4 : large motor on soft foundation
A=Good, B=Acceptable, C=Warning, D=Dangerous