Description
Technical Specifications Table
| Parameter | Specification |
| Model Number | Bently Nevada 146031-02 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Type | Seismic Velocity Sensor |
| Measurement Range | 0-25.4 mm/s (1 in/s) peak |
| Frequency Response | 10 Hz to 1 kHz (±3 dB) |
| Sensitivity | 200 mV/mm/s (5.0 mV/mil/s) |
| Output Signal | 2-wire, 4-20 mA |
| Power Supply | 18-30 VDC loop powered |
| Housing Material | 316 Stainless Steel |
| Mounting | M10 x 1.5 threaded stud |
| Operating Temperature | -40°C to +150°C (-40°F to +302°F) |
| Environmental Rating | IP67 |
| Shock Resistance | 100 g, 11 ms half-sine |
| Compliance Standards | API 670, ISO 10816 |
BENTLY 146031-02
Product Overview
The Bently Nevada 146031-02 is an industrial-grade seismic velocity transducer designed for continuous vibration monitoring in extreme operating environments. This high-temperature variant of Bently Nevada’s proven velocity sensor platform delivers reliable machinery protection in applications where elevated temperatures would compromise standard sensors.
Featuring an extended temperature range up to 150°C (302°F), the 146031-02 maintains measurement accuracy in hot oil pumps, gas turbine enclosures, and other high-heat applications. Its all-welded 316 stainless steel construction provides exceptional durability while the hermetic seal prevents moisture ingress in challenging industrial environments.
Key Features and Benefits
High-Temperature Performance:
Extended operating range to +150°C (+302°F)
Stable sensitivity across full temperature range
Special high-temp cable materials
Thermal isolation design
Precision Vibration Measurement:
Wide frequency response (10 Hz to 1 kHz)
Excellent linearity (±5% typical)
4-20 mA output for direct system integration
High signal-to-noise ratio
Rugged Industrial Design:
316 stainless steel housing
Hermetically sealed construction
Withstands 100 g mechanical shock
IP67 environmental protection
Installation Guidelines
BENTLY 146031-02
Mounting Requirements:
Clean, flat mounting surface (Ra < 3.2 μm)
Secure to machine housing using M10 stud
Recommended torque: 20 Nm (±10%)
Maintain minimum 25 mm clearance
Electrical Connections:
Use shielded cable for all connections
Properly ground shield at monitor end only
Verify polarity before power-up
Check for proper loop current
High-Temp Considerations:
Allow for thermal expansion
Avoid direct heat sources on cable
Use high-temp cable ties
Route cables away from hot surfaces
Maintenance Procedures
Routine Checks:
Monthly visual inspections
Verify tightness of mounting hardware
Check cable condition
Confirm proper signal output
Calibration:
Annual sensitivity verification
Check against reference standard
Record calibration results
Replace if out of tolerance
Troubleshooting:
Zero output: Check power and connections
Erratic signal: Inspect for cable damage
Drifting baseline: Verify mounting integrity
Noise issues: Confirm proper grounding
Warranty and Support
Coverage:
24-month limited warranty
Defects in materials/workmanship
Excludes improper installation/misuse
Support Services:
Global technical assistance
Application engineering
Repair and recalibration
Spare parts availability
Documentation:
Installation manuals
Technical bulletins
Application notes
Safety guidelines
The Bently Nevada 146031-02 combines proven velocity measurement technology with enhanced high-temperature capabilities for reliable machinery protection in the most demanding industrial applications.
