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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
A vibration switch is connected to a pickup installed in a machine tool, crusher, centrifugal separator, cooling tower, etc.
Maintenance monitoring can be performed to stop operation if there is abnormal vibration in the equipment.
Specifications
-
VM-90A (Standard type)
Specification sheet DownloadVM-90A (Intrinsically safe explosion-proofing type)
Specification sheet Download
| Item | Specification | |
|---|---|---|
| Frequency range | Acceleration | 8 Hz to 8 kHz, -3 dB (10 Hz to 5 kHz, ±1 dB) |
| Velocity | 10 Hz to 1kHz, ±1.5 dB | |
| Displacement | 10 Hz to 300 Hz, ±1.5 dB | |
| Measurement range | Acceleration | 10,100 m/s2 |
| Velocity | 10, 100 mm/s rms | |
| Displacement | 100, 1,000 μmp-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 – 20 mA (maximum load resistance 300Ω) | |
| Monitor output | AC3 VP-P full scale DC2 V full scale |
|
| Power supply | AC100 V±10 V, 47 to 63Hz | |
| Power consumption | 4VA 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
・Standard type
| Item | Notes |
|---|---|
| Pickup (VP-A51IW) | Piezoelectric accelerometer |
| Pickup cable | 5 m long cable* with a pick up connector and waterproof cap |
| Standard accessories |
|
* Other lengths available on request.
* Please check the specification sheet for details.
・Intrinsically safe explosion-proofing type
| Item | Notes |
|---|---|
| Pickup (HS-100I) | Piezoelectric accelerometer |
| Pickup cable | 5 m long cable* with a pick up waterproof connector |
| Standard accessories |
|
* Other lengths available on request.
* Please check the specification sheet for details.
Option
| Item | Notes |
|---|---|
| Mechanical filter (MCF-6H) |
Prevention of incorrect operation on displacement / velocity measurement. Elimination of high frequency component. |
Outward dimensions
