Description
Overview
The Bently Nevada 330500‑04‑01 piezo‑velocity sensor is part of the Velomitor family, designed to measure absolute vibration on machine casings, bearing housings, and structural components. Its solid‑state piezoelectric architecture provides stable, drift‑free velocity output suitable for continuous condition monitoring and protection systems.
Key Characteristics
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Piezoelectric velocity sensing element with no moving parts
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Direct measurement of casing vibration for diagnostics and protection
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Compatible with Bently Nevada monitoring platforms, including TSI systems
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Rugged construction for long‑term operation in harsh industrial environments
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Mounting flexibility: vertical, horizontal, or angled installation
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Manufactured in the USA with consistent quality control
Technical Specifications
| Parameter |
Specification |
| Model / Part Number |
330500‑04‑01 |
| Sensor Type |
Velomitor Piezo‑Velocity Sensor |
| Measurement Type |
Absolute vibration (velocity) |
| Mounting Thread |
1/2‑20 UNF adapter |
| Output |
Piezoelectric velocity signal |
| Weight |
0.55 kg |
| Dimensions |
20.5 × 22.4 × 3.3 cm |
| Operating Status |
Active |
| Minimum Order Quantity |
1 |
| Country of Origin |
USA |
| HS Code |
8537101190 |
| System Compatibility |
TSI and Bently Nevada monitoring systems |
| Condition |
Brand New |
Functional Description
The 330500‑04‑01 sensor converts casing vibration into a proportional electrical signal using a solid‑state piezoelectric element. This design eliminates mechanical wear and ensures stable frequency response across a wide operating range. The sensor is optimized for detecting:
Its 1/2‑20 UNF mounting adapter allows secure attachment to bearing housings or machine frames. Proper mounting torque and surface preparation are essential to maintain accurate amplitude and frequency response.
Application Scenarios
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Steam and gas turbines
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Centrifugal and axial compressors
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Industrial pumps
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Electric motors and generators
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Gearboxes and high‑speed rotating equipment
FAQ
Q: Does the sensor require a specific mounting orientation? A: No. The piezoelectric design supports installation in any orientation without affecting measurement accuracy.
Q: What type of vibration does the sensor measure? A: It measures absolute casing vibration in velocity units, ideal for machinery protection and diagnostics.
Q: Can it replace legacy velocity transducers? A: Yes. The solid‑state design offers improved reliability compared to moving‑coil velocity pickups.
