330425-01-05 Bently Nevada 330425 Accelerometer Sensor | In Stock

Product Introduction

The 330425-01-05 is a ruggedized piezoelectric accelerometer designed for high-performance vibration measurement in industrial machinery. This Bently Nevada transducer provides a linear output of 100 mV/g, making it ideal for detecting early-stage rolling element bearing failures and gear mesh issues. We advise engineering teams to consult the 330425 installation datasheet to ensure proper mounting torque and surface preparation. Access our technical library to download the full 330425-01-05 wiring diagrams and frequency response curves.

Global PLC Spare HUB's Insight

From an engineering perspective, the 330425-01-05 is the industry standard for general-purpose casing vibration. Its 316L stainless steel housing and hermetic sealing allow it to thrive in 100% condensing environments. A critical technical detail for the 330425 is its high resonant frequency (over 30 kHz), which prevents signal distortion within the 15 kHz operating band. For users migrating from older sensors, the "G" prefix serial numbers in the 330425-01-05 series offer significantly improved base strain sensitivity, reducing "false" vibration signals caused by thermal expansion of the machine case.

Technical Parameters & Core Information

• Brand: Bently Nevada
• Model: 330425-01-05
• Transducer Type: Piezoelectric Accelerometer
• Sensitivity: 10.2 mV/m/s² (100 mV/g) ±5%
• Frequency Response: 10 Hz to 15 kHz (±3dB)
• Linearity: ±1% up to 490 m/s² (50 g) peak
• Resonant Frequency: >30 kHz (Mounted)
• Transverse Sensitivity: Less than 5% of axial signal
• Operating Temperature: -55°C to +121°C (-67°F to +250°F)
• Environmental Sealing: IP68 Equivalent / Hermetically Sealed
• Output Bias: -8.5 ± 0.5 Vdc (at -24 Vdc input)
• Case Material: 316L Stainless Steel
• Weight: 99 g typical (excluding cable)

Configuration Breakdown

330425 — Acceleration Transducer Series
  └── -01 (Mounting Thread Option)
      └── ¼-28 UNF integral stud for rigid mechanical coupling
  └── -05 (Agency Approval Option)
      └── Multiple Approvals: CSA, ATEX, IECEx for hazardous areas

Installation & Compatibility Guidance

• Mounting Surface: Target a 32 microinch rms finish for optimal signal transfer.
• Torque Specification: Apply exactly 4.1 N·m (3.0 ft·lb) for accurate linear response.
• Orientation: Functional in any mounting angle (Omnidirectional).
• Connector Interface: Standard 3-pin MIL-C-5015 Receptacle.
• Compatible Systems: Integrates with Bently Nevada 3500/42M and 3300 series monitor racks.

Application Scenarios & Diagnostic Capabilities

• Gearbox Monitoring: Precision detection of high-frequency gear tooth wear and pitting.
• Rolling Element Bearings: Identification of inner/outer race defects via noise analysis.
• Cavitation Detection: Monitors pump casing vibration for fluid flow instabilities.
• Motors & Fans: General casing vibration trending for balance and alignment diagnostics.

Shipping & Warranty

• Shipping Methods: Global delivery via FedEx, UPS, and DHL.
• Dispatch Window: Orders ship within 24-48 hours.
• Warranty: Guaranteed with a 12-month professional warranty.
• Origin: Manufactured in the U.S.A.

FAQ

Question: Why does the 330425-01-05 show a -8.5V bias voltage during testing?

Answer: This is the normal quiescent output voltage. It confirms the internal amplifier is functioning correctly before signal processing.

Question: Can I install the 330425 sensor without a mounting base?

Answer: For newer "G" prefix serial numbers, you can mount directly. Older units require a base to prevent signal errors from base strain.

Question: What is the maximum cable distance for the 330425-01-05?

Answer: You can run cables up to 305 meters (1000 ft) without any measurable signal degradation.

Question: Is the 330425-01-05 waterproof for submerged applications?

Answer: The sensor body is IP68 rated, but the MIL-connector interface requires specialized environmental boots for submerged use.

Question: How does temperature affect the sensitivity of the 330425?

Answer: Sensitivity typically shifts -11% to +3% across the full temperature range; calibrate your monitor accordingly.

Selection & Buying Guide

• Voltage Check: Verify your system provides the required -24 Vdc excitation power.
• Thread Selection: Ensure your mounting location is tapped for ¼-28 UNF before ordering the -01 option.
• Certification: Always specify the -05 option for use in classified explosive environments.
• Inventory Strategy: We recommend keeping a spare 330425-01-05 to prevent downtime during critical machine inspections.

Tags