The Columbia Model VM-300 Vibration Meter is a multipurpose vibration measuring tool for general field use and routine vibration checks of industrial machinery. It is portable and user-friendly. This portable gadget is the best tool for preventive maintenance.
For stability and error minimization, the Model VM-300 incorporates a charge amplifier input stage into its robust, precise piezoelectric accelerometer. An internal embedded microcontroller that is guided by a membrane keypad with seven splash-resistant keys operates the device.
The piezoelectric accelerometer found in the sensor probe produces an electric charge inversely proportional to the instantaneous value of the applied acceleration.
The VM-300 instrument receives this charge signal via a low-noise coaxial cable, which is then processed by a charge amplifier to produce a voltage signal corresponding to instantaneous acceleration. Instead of a handheld probe, the Model VM-300A comes with an accelerometer and a 10" cable assembly.
The VM-300 has the following features
- AC or battery operation
- Integrated micro-controller
- Standard sensor probe or optional accelerometer w/cable
- Low voltage lockout
- Optional printer
- Padded carrying case
Specifications
Source: Columbia Research Laboratories, Inc.
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| Frequency Response |
10 to 1,000 Hz |
| Velocity |
0.1 to 300 in/sec F.S. |
| Displacement |
0.001 to 3 inches F.S. |
| Acceleration |
0.1 to 300 g F.S. |
| Accuracy |
+4% of F.S. |
| Low Frequency Rejection |
40 dB down (min.) at 1 Hz |