Description
Product Core Brief
- Model: 330854-040-24-00
- Brand: Bently Nevada
- Series: 3300 XL 25 mm
- Core Function: Connects 25 mm proximity probes to Proximitor modules for differential expansion monitoring.
- Product Type: High-Temperature Extension Cable
- Key Specs: 4.0 m Length | 25 mm System | High-Temp Rating
- Condition: New Original (New Surplus)
BENTLY 330854-040-24-00
Product Introduction
BENTLY 330854-040-24-00 is a 4-meter high-temperature extension cable specifically designed for the 3300 XL 25 mm sensor system. It bridges the gap between field sensors and rack-mounted Proximitor modules in large rotating machinery.
This cable is engineered to withstand the extreme heat typically found in large steam turbine environments. The BENTLY 330854-040-24-00 maintains 50 Ω characteristic impedance to prevent signal reflections. Verify total system cable length against OEM limits before installation.
Key Technical Specifications
- Cable Length: 4.0 meters (length code -040)
- Temperature Rating: 75 °C (High-Temperature Variant)
- Characteristic Impedance: 50 Ω ±5%
- System Compatibility: 3300 XL 25 mm Proximitor
- Connector Type: Factory-Terminated ClickLoc
- Shielding: Coaxial construction with noise immunity
- Insulation Material: High-Temp Fluororubber / FEP
- Power Requirements: None (passive cable)
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Trace source via serial number. Inspect connectors for bent pins or corrosion.
- Live Functional Test: Connect to TK-3E calibrator. Verify signal transmission across full length.
- Electrical Parameter Test: Measure impedance (50 Ω ±5%) and insulation (500 V Megger, >10 MΩ).
- Cable Integrity Test: Check continuity and shield grounding at both ends.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with date.
Replacement Pitfall Guide
❗ System Size Mismatch: The BENTLY 330854-040-24-00 is strictly for 25 mm systems. Using it with an 8 mm or 11 mm probe will cause severe calibration errors.
❗ Complete System Replacement: When upgrading to the 3300 XL 25 mm system, the entire system (probe, extension cable, and proximitor) must be replaced together.
❗ Impedance Mismatch: Never substitute with generic coaxial cable. The 50 Ω impedance is critical for eddy current signal integrity.
❗ Connector Torque: ClickLoc connectors are finger-tightened. Do not use wrenches. Over-torquing damages the locking mechanism.
❗ Cable Routing: Route away from VFD cables. EMI can corrupt the low-level eddy current signal.
Keep these in mind and you’ll cut 90% of rework time.
BENTLY 330854-040-24-00
Compatibility Matrix & Benchmarks
- 330854-040-24-00 → 330854-040-24-CN : Direct — equivalent part number
- 330854-040-24-00 → 330854-040-24-05 : Direct — equivalent part number
- 330854-040-24-00 → 330854-080-25-CN : Incompatible — 8m length changes calibration
- 330854-040-24-00 → 330130-040-00-00 : Incompatible — 8mm system cable
Benchmarks:
- Signal attenuation: <0.5 dB at 8 kHz (4 m length)
- EMI rejection: >60 dB (coaxial shielded design)
