Vibration Measuring System
Vibration Switch（VM-90A）
- Compact popular type
- A popular vibration monitor specialized in low cost and control function. It is suitable for automatic control when abnormal vibration occurs.
Features
- ■ Low cost
- ■ Changeover type for measurement mode and range
- ■ Two step alarm setting, level outputs available
- ■ Applicable with intrinsic safety proof pickups
Application example
Stop operation in case of abnormality installed on or inside machine tools or crushers etc.
Specifications
- VM-90A (Standard type) sheet download
- VM-90A (Intrinsically safe explosion-proofing type) sheet download
| Item | Specification | |
|---|---|---|
| Frequency range |
Acceleration | 8Hz to 8kHz, -3dB (10Hz to 5kHz, ±1dB) |
| Velocity | 10Hz to 1kHz, ±1.5dB | |
| Displacement | 10Hz to 300Hz, ±1.5dB | |
| Measurement range |
Acceleration | 10,100m/s2 |
| Velocity | 10, 100mm/s rms | |
| Displacement | 100, 1,000μmp-p | |
| Alarm output | Individual level setting (upper 2 steps) : 10 to 100% Individual 1c contact : maximum capacity DC30 V, 1A Delay time setting : 1 to 10 seconds Automatic reset |
|
| Level output | DC4 – 20mA (maximum load resistance 300Ω) | |
| Monitor output | AC3 VP-P full scale DC2 V full scale |
|
| Power supply | AC100 V±10V, 47 to 63Hz | |
| Power consumption | 5VA or smaller | |
| Operational temperature / humidity range |
0 to +50ﾟC, 35 to 95%RH (non-condensing) | |
| Mass / Size | 74(W) X 72(D) X 90(H)mm / approx. 250g | |
Standard composition
| Item | Notes |
|---|---|
| Pickup (VP-A52IW) | Piesoelectric accelerometer |
| Pickup cable | 5m long cable with a pick up connector and waterproof cap |
| Standard accessories |
|
Other lengths available on request. (Maximum length is 200m)
Option
| Name | Remark |
|---|---|
| Mechanical filter (MCF-6) | Prevention of incorrect operation on displacement / velocity measurement. Elimination of high frequency component. |
Outward dimensions
