Description
Technical Specifications Table
| Parameter | Specification |
| Model Number | Bently Nevada 135489-01 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Type | Industrial IEPE Accelerometer |
| Sensitivity | 100 mV/g (±5%) |
| Measurement Range | ±50 g peak |
| Frequency Response | 0.5 Hz to 10 kHz (±3 dB) |
| Resonant Frequency | >28 kHz |
| Output Signal | 2-10 mA constant current |
| Power Supply | 18-30 VDC, 2-20 mA |
| Housing Material | Titanium alloy |
| Mounting | M6 threaded stud |
| Environmental Rating | IP68 (submersible to 3m) |
| Operating Temperature | -55°C to +125°C (-67°F to +257°F) |
| Shock Resistance | 500 g, 1 ms |
| Compliance Standards | API 670, ISO 10816, ATEX/IECEx (optional) |
BENTLY 135489-01
Product Overview
The Bently Nevada 135489-01 represents a high-performance industrial accelerometer designed for extreme-condition machinery monitoring. This rugged sensor combines Integrated Electronics Piezo-Electric (IEPE) technology with military-grade construction for reliable vibration measurement in the most demanding industrial environments.
As part of Bently Nevada’s premium monitoring solutions, the 135489-01 features a titanium alloy housing and advanced signal conditioning electronics that maintain accuracy in high-electromagnetic interference areas. Its extended temperature range and submersible design make it particularly suitable for offshore, marine, and heavy industrial applications.
Key Features and Benefits
Precision Measurement:
Ultra-wide frequency response (0.5 Hz to 10 kHz)
High sensitivity with low noise floor
Excellent phase response (±1° from 10 Hz to 5 kHz)
Dual-range output (field-selectable 4-20mA or 2-10V)
Extreme Environment Design:
Titanium alloy housing for corrosion resistance
Hermetic glass-to-metal seals
Submersible to 3 meters (IP68)
Explosion-proof versions available
Smart Monitoring Capabilities:
Built-in diagnostics (sensor health monitoring)
Plug-and-play auto-configuration
Digital identification (IEC 61987 compliant)
Predictive maintenance trending outputs
Industrial Applications
Oil & Gas:
Subsea pump monitoring
Offshore platform equipment
LNG compressor protection
Power Generation:
Nuclear plant machinery
Hydroelectric turbine monitoring
Cooling system vibration analysis
Heavy Industry:
Mining equipment monitoring
Steel mill rolling equipment
Paper machine dryer sections
Installation Guidelines
Mechanical Installation:
Surface preparation (Ra < 1.6 μm recommended)
Apply anti-seize compound to threads
Torque to 7 Nm ±10% using calibrated wrench
Verify proper grounding path
Electrical Connection:
Use double-shielded cable (Belden 8761 or equivalent)
Ground shield at monitor end only
Maintain minimum 30 cm separation from power cables
Verify loop impedance (<600Ω)
Commissioning:
Perform baseline measurement
Verify frequency response
Set alarm thresholds
Record as-left calibration data
BENTLY 135489-01
Maintenance Procedures
Preventive Maintenance:
Quarterly visual inspections
Annual calibration verification
Biannual cable integrity tests
5-year comprehensive overhaul
Diagnostic Features:
Built-in self-test capability
Degradation trend monitoring
Fault code output
Predictive replacement indicators
Troubleshooting:
LED status indicator (green/red)
Output signal validation
Vibration signature analysis
Comparative channel monitoring
Warranty and Support
Premium Coverage:
36-month extended warranty
Includes calibration drift
On-site replacement service
Priority technical support
Global Support Network:
24/7 emergency response
Regional repair centers
Application engineering
Training programs
Documentation Package:
SIL compliance documentation
Hazardous area certifications
Material traceability records
Installation validation forms
The Bently Nevada 135489-01 sets a new standard for industrial vibration monitoring, combining advanced sensing technology with extreme environment durability for mission-critical machinery protection applications.
