Product Overview
The Bently Nevada 330400-02-BR Accelerometer is a three-wire piezoelectric acceleration transducer designed for continuous measurement of machine casing vibration on critical rotating machinery. It belongs to the 330400/330425 Accelerometer Series and provides reliable vibration data for machinery protection, diagnostics, and predictive maintenance.
The 330400 series is designed to meet API Standard 670 requirements and is commonly installed on turbines, compressors, pumps, motors, gearboxes, and generators.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 330400-02-BR |
| Product Type | Accelerometer Acceleration Transducer |
| Series | 330400 Accelerometer |
| Sensor Technology | Three-wire piezoelectric |
| Sensitivity | 100 mV/g (±5%) |
| Measurement Range | 50 g peak |
| Frequency Response | 10 Hz to 15 kHz |
| Supply Voltage | -24 VDC nominal |
| Output | Voltage proportional to acceleration |
| Mounting Thread | M8 × 1 integral mounting stud |
| Housing Material | Stainless steel |
| Regional Approval | BR – Brazil-specific approval (customer/region dependent) |
| API Compliance | API 670 |
Typical Applications
The 330400-02-BR is suitable for monitoring:
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Steam turbines
-
Gas turbines
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Centrifugal compressors
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Pumps
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Electric motors
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Gearboxes
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Fans and blowers
-
Generators
Typical measurements include:
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Casing vibration
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Bearing housing vibration
-
Gear mesh vibration
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Structural vibration
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Machine condition monitoring
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Predictive maintenance
Key Features
High-Sensitivity Measurement
Provides 100 mV/g output sensitivity with a 50 g peak dynamic range for accurate vibration monitoring.
Wide Frequency Response
Measures vibration from 10 Hz to 15 kHz, enabling detection of both low-frequency machine vibration and high-frequency bearing or gear defects.
M8 × 1 Metric Mounting
The 02 option includes an M8 × 1 integral mounting stud, making it suitable for machinery using metric mounting hardware.
Rugged Stainless Steel Housing
Designed for demanding industrial environments with excellent resistance to oil, moisture, vibration, and corrosion.
API 670 Compliance
Designed to satisfy API Standard 670 requirements for accelerometer-based machinery protection systems.
Regional Certification
The BR version is intended for applications requiring Brazil-specific approvals or documentation. Certification details should be verified from the product label or manufacturer documentation before installation.
Frequently Asked Questions
1. What is the 330400-02-BR used for?
It measures machine casing acceleration for vibration monitoring, machinery protection, and predictive maintenance.
2. What does the "02" option indicate?
It specifies an M8 × 1 integral mounting stud.
3. What does the "BR" suffix mean?
It is not a standard published catalog option. It generally denotes a Brazil-specific approval or regional certification associated with a particular order. The exact meaning should be confirmed with Bently Nevada documentation or the product nameplate.
4. What is the sensor sensitivity?
The accelerometer provides 100 mV/g (±5%) sensitivity.
5. What frequency range does it cover?
It operates over a frequency range of 10 Hz to 15 kHz.
6. Is it API 670 compliant?
Yes. The 330400 series is designed to meet API 670 requirements.
7. Which industries commonly use this accelerometer?
Typical industries include oil & gas, power generation, petrochemical, mining, marine, and other heavy industrial rotating machinery applications.
8. Can the BR version be replaced with a standard 330400-02-05?
Not automatically. Because BR may represent regional certification or a customer-specific configuration, compatibility should be confirmed before replacement.
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