Product Overview
The Bently Nevada 330500-03-04 Velomitor Piezo-velocity Sensor is a high-performance vibration monitoring device designed for continuous machinery condition monitoring in demanding industrial environments. Engineered with solid-state piezoelectric technology, this sensor delivers direct velocity output without requiring an external integrator, making installation straightforward while maintaining exceptional measurement accuracy.
Designed for rotating equipment such as turbines, compressors, motors, pumps, and fans, the 330500-03-04 offers dependable vibration detection that helps maintenance teams identify developing mechanical issues before they lead to costly downtime. Its rugged stainless-steel construction and hazardous-area approvals make it an excellent choice for critical industrial applications where reliability is essential.
Key Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Product Model | 330500-03-04 |
| Product Type | Velomitor Piezo-velocity Sensor |
| Sensor Technology | Piezoelectric Velocity Sensor |
| Output | Direct Velocity Signal |
| Mounting Adapter | 1/4-28 UNF (Option 03) |
| Approval Option | Multiple Approvals (Option 04) |
| Housing Material | 316L Stainless Steel |
| Connector | 2-pin Mil-C-5015 Hermetically Sealed |
| Operating Temperature | -55°C to +121°C |
| Shock Resistance | Up to 5,000 g Peak |
| Frequency Response | Up to 5 kHz (model dependent) |
| Diameter | 25.3 mm (0.995 in) |
| Height | 63.2 mm (2.49 in) |
| Weight | 142 g (5.0 oz) Typical |
Typical Industrial Applications
The 330500-03-04 Velomitor sensor is widely used in predictive maintenance and machine protection systems where accurate casing vibration measurement is required.
Typical applications include:
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Steam and gas turbines
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Centrifugal and reciprocating compressors
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Industrial pumps
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Electric motors
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Cooling tower drives
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Fans and blowers
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Gearboxes
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Process manufacturing equipment
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Power generation facilities
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Petrochemical and oil & gas plants
Why Choose the 330500-03-04?
The Bently Nevada 330500-03-04 is recognized for delivering dependable vibration monitoring performance in challenging operating conditions.
Key benefits include:
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High-accuracy piezoelectric sensing technology
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Direct velocity output for simplified system integration
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Rugged 316L stainless steel housing for long-term durability
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Hermetically sealed construction for harsh environments
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Excellent resistance to moisture, vibration, and corrosion
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Suitable for hazardous industrial locations
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Stable performance across a wide operating temperature range
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Compact design for convenient installation
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Low maintenance requirements
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Trusted solution for predictive maintenance programs
Frequently Asked Questions
1. What is the primary function of the 330500-03-04?
It measures machine casing vibration velocity to support condition monitoring and predictive maintenance.
2. What equipment is this sensor commonly installed on?
It is commonly installed on turbines, pumps, compressors, motors, fans, and other rotating machinery.
3. Does this sensor require an external signal integrator?
No. It provides a direct velocity output, simplifying installation and system design.
4. What mounting thread does this model use?
This configuration includes the 1/4-28 UNF mounting adapter.
5. What material is used for the sensor housing?
The housing is manufactured from corrosion-resistant 316L stainless steel.
6. Is the sensor suitable for harsh industrial environments?
Yes. Its sealed construction and rugged design allow reliable operation in demanding industrial applications.
7. What is the operating temperature range?
The sensor operates from -55°C to +121°C, making it suitable for both low- and high-temperature environments.
8. Can it be used in hazardous areas?
Yes. The "-04" approval option includes multiple hazardous-area certifications for suitable installations.
9. What are the physical dimensions?
The sensor measures approximately 25.3 mm in diameter and 63.2 mm in height, with a typical weight of 142 g.
10. Why is this sensor popular for predictive maintenance?
Its reliable velocity measurement, robust construction, and long-term stability help maintenance teams detect abnormal vibration early, reducing unexpected equipment failures.
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