Bently Nevada 330901-00-12-70-02-RU 3300 NSv Proximity Probe

Bently Nevada 330901-00-12-70-02-RU Product Introduction

The Bently Nevada 330901-00-12-70-02-RU is a rugged industrial accelerometer from the 3300 series, specifically designed for continuous vibration monitoring of critical rotating equipment. This intrinsically safe sensor provides reliable machinery protection in hazardous areas, featuring a 4-20mA output with superior signal integrity for long cable runs. The unit is engineered for permanent installation on turbines, compressors, pumps and other high-value assets where early fault detection is essential.

Product Parameters

Product Applications

• Gas Turbine Monitoring: Continuous vibration measurement of turbine bearings and casings

• Refinery Compressors: API 670 compliant protection for centrifugal compressors

• Offshore Platforms: Subsea pump monitoring in Zone 1 hazardous areas

• Power Generation: Steam turbine supervisory systems

• Pipeline Operations: Mainline compressor station protection

• Petrochemical Plants: Reactor feed pump condition monitoring

Product Advantages

1. Intrinsic Safety: Certified for use in explosive atmospheres without additional barriers

2. Extended Temperature Operation: Performs reliably from arctic to desert conditions

3. Corrosion Resistance: Marine-grade stainless steel construction

4. High EMI Immunity: Excellent rejection of electrical noise in industrial environments

5. Long-term Stability: <2% sensitivity change per year

6. API 670 Compliance: Meets stringent machinery protection standards

7. Dual Certification: ATEX and IECEx approvals for global projects

8. Submersible Design: IP68 rating for washdown areas or temporary flooding

Frequently Asked Questions (FAQ)

1. What is the maximum cable length supported?

   • 50 meters with 24 AWG shielded cable (loop resistance ≤100Ω)

2. Does this model require external power conditioning?

   • No, it operates on standard 2-wire 4-20mA loops without signal conditioners

3. What mounting orientation is required?

   • Any orientation permitted – performance is unaffected by mounting angle

4. Is periodic recalibration necessary?

   • Recommended every 12 months or after extreme shock events

5. What is the MTBF (Mean Time Between Failures)?

   • 450,000 hours  at 40°C ambient temperature

6. Can it measure both casing and shaft vibration?

   • Designed for casing vibration only – requires proximity probes for shaft measurement

7. What is the warranty period?

   • 12 months from date of shipment

8. Is the output linear across the full scale?

   • ±1% linearity from 4-20mA across specified measurement range

9. What maintenance is required?

   • Annual visual inspection and connector integrity check recommended

10. How does it compare to 3300/45 models?

    • This version adds hazardous area certification while maintaining identical performance specs

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