Product overview
The BBVM-VS250 is an industrial IEPE piezoelectric velocity sensor designed for absolute vibration measurement on bearing housings, machine casings and structural components. It integrates a PZT sensing element, a low-noise miniature charge amplifier and a precision integration circuit in a stainless-steel housing. Its solid-state construction contains no moving parts and is suitable for long-term industrial vibration monitoring.
Key specifications
| Parameter | Value |
|---|---|
| Measurement | Vibration velocity |
| Sensitivity | 250 mV/(mm/s), customizable |
| Frequency response | 3–3,000 Hz (±3 dB) |
| Measurement range | ±200 mm/s |
| Maximum shock | 5,000 g |
| Sensing element | PZT piezoelectric ceramic |
| Sensing structure | Shear mode |
Electrical specifications
| Parameter | Value |
|---|---|
| Supply voltage | 18–28 VDC |
| Constant-current excitation | 2–10 mA |
| Output impedance | <500 Ω |
| Insulation resistance | >10⁸ Ω |
Mechanical and environmental specifications
| Parameter | Value |
|---|---|
| Housing material | Stainless steel |
| Sealing | Laser-welded stainless-steel housing |
| Weight | 80 g |
| Mounting thread | M6; 1/4 in optional |
| Standard connector | 2-pin MIL-C5015 |
| Mounting torque | 2.7–6.8 N·m |
| Operating temperature | −40 to +120 °C |
Output options
| Option | Description |
|---|---|
| Standard connector | 2-pin MIL-C5015 connector |
| Integral waterproof cable | Rated submersible depth: 152 m |
| Integral armored cable | Armored integral cable for enhanced mechanical protection |
Wiring
| Terminal | Connection |
|---|---|
| A | Power supply; red conductor |
| B | Common; black conductor |
| COM | Shield |
Mounting options
- M6 × 1 mounting screw
- 1/4 in mounting screw
- 1/4 in-to-M6 conversion screw
Calibration
- Calibration certificate with frequency-response curve
Typical applications
- Absolute vibration measurement of bearing housings
- Machine-casing vibration monitoring
- Structural vibration measurement
- Long-term industrial condition monitoring