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Bently Nevada 330400 / 330425 Accelerometer
The Bently Nevada 330400 / 330425 Accelerometers are designed for critical machinery applications that require casing acceleration measurements, such as gear mesh monitoring. The 330400 meets the requirements of American Petroleum Institute (API) Standard 670, offering a 50 g peak amplitude range with a sensitivity of 100 mV/g. The 330425 model is similar in design but provides a higher amplitude range of 75 g peak and a sensitivity of 25 mV/g.

Description
The Bently Nevada 330400 / 330425 Accelerometers are high-performance vibration sensors designed for critical machinery monitoring where accurate casing acceleration measurement is required, such as gear mesh analysis. Built to meet API 670 standards, these accelerometers deliver reliable and precise vibration data for demanding industrial applications including turbines, compressors, gearboxes, and other rotating equipment.
The 330400 Accelerometer offers a 50 g peak amplitude range with 100 mV/g sensitivity, while the 330425 Accelerometer provides a higher 75 g peak range with 25 mV/g sensitivity. With rugged construction and dependable performance, these sensors support advanced condition monitoring, predictive maintenance, and machinery protection programs.
QInstrument is a leading supplier of Bently Nevada 330400 / 330425 Accelerometer in UK and Ireland (EU), offering competitive prices and fast worldwide shipping across Turkey, Saudi Arabia, Oman, Nigeria, Indonesia, Malaysia, Vietnam, Mexico, Brazil, Argentina, and Colombia. Buy Bently Nevada Accelerometers from one of the UK’s leading suppliers of industrial automation and instrumentation equipment.
Features of Bently Nevada 330400 / 330425 Accelerometer
- Designed for critical machinery vibration monitoring
- Provides casing acceleration measurement for gear mesh and high-speed applications
- API 670 compliant (330400 model)
- 330400: 50 g peak amplitude range with 100 mV/g sensitivity
- 330425: 75 g peak amplitude range with 25 mV/g sensitivity
- Rugged, hermetically sealed stainless steel housing for harsh environments
- High-reliability industrial vibration transducer
- Supports predictive maintenance and condition monitoring systems
Technical Specifications of Bently Nevada 330400 / 330425 Accelerometer
- Sensitivity:
• 330400: 10.2 mV/m/s² (100 mV/g) ±5%
• 330425: 2.5 mV/m/s² (25 mV/g) ±5% - Acceleration Range:
• 330400: 490 m/s² (50 g peak)
• 330425: 735 m/s² (75 g peak) - Frequency Response: 10 Hz to 15 kHz (±3 dB) / 30 Hz to 10 kHz (±10 %)
- Operating Temperature: -55 °C to +121 °C (-67 °F to +250 °F)
- Power Requirement: -24 ± 0.5 V DC; typical 2 mA bias current
- Transverse Sensitivity: < 5 % of axial
- Mounted Resonant Frequency: > 30 kHz
- Noise Floor (Broadband):
• 330400: ~0.039 m/s² (0.004 g) rms
• 330425: ~0.098 m/s² (0.01 g) rms - Environmental: Hermetically sealed stainless steel housing; 100 % condensing, non-submerged
- Shock Survivability: up to ~5000 g peak
- Physical: 3-pin MIL-C-5015 connector, ~99 g (3.5 oz) weight, 23 mm diameter × ~59 mm height
Accelerometers Part Number & Configuration Guide
Standard (Example) Part Number
330400-01-00
This is a reference configuration for the Bently Nevada 330400 / 330425 Accelerometer. It represents one commonly supplied setup and helps customers understand how the part number is structured.
Configurable Part Number Format
3304XX-XX-XX
Each X / XX in the part number indicates a selectable option that can be customized based on your application requirements such as Sensitivity & Range, Mounting Thread Option & Approvals.
✅ Important: Final part number depends on the exact configuration needed for your machinery, environment, and monitoring system.
Applications
The Bently Nevada 330400 / 330425 Accelerometers are commonly used in monitoring critical rotating machinery, including:
- Steam and gas turbines
- Compressors
- Gearboxes (gear mesh monitoring)
- High-speed motors
- Pumps in critical service applications
Downloadable
Bently Nevada 330400 / 330425 Accelerometer Product Specifications
Why Choose QInstrument?
At QInstrument, we’re more than just an industrial instrument supplier, we’re your trusted partner for industrial automation, instrumentation, control systems, and test & measurement solutions.
Here’s why companies across the United Kingdom (UK) and Ireland (EU) choose us for industrial products and technical support:
- Test & Measurement Instruments You Can Trust: We supply high-quality test and measurement instruments from leading global brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity probes, calibrators, and advanced diagnostic tools for condition monitoring, maintenance, and industrial applications.
- Industrial Automation & Control Solutions: Our product portfolio includes PLC systems, SCADA solutions, transmitters, analyzers, process control instruments, vibration monitoring systems, and industrial networking solutions designed to improve operational efficiency, accuracy, and reliability.
- Fast, Reliable Worldwide Delivery: We proudly support customers across Turkey, Saudi Arabia, Oman, Nigeria, Indonesia, Malaysia, Vietnam, Mexico, Brazil, Argentina, and Colombia with reliable products, technical expertise, responsive customer service, and efficient global delivery solutions.
We Ship Worldwide
At QInstrument, we supply industrial automation, test and measurement instruments, control systems, and sensors across the United Kingdom (UK) and Ireland (EU), offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers across Europe, South America, Africa, Southeast Asia, and the Middle East.
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