Description

330705-02-18-90-02-CN Bently Nevada 3300XL 11mm Reverse Mount Eddy Current Proximity Probe

Technical Specifications

• Product Model: 330705-02-18-90-02-CN
• Brand: Bently Nevada
• Warranty: One Year
• Input Voltage: Powered by matching 3300XL proximitor sensor with nominal -24 VDC regulated supply
• Operating Temperature: Probe body -52°C to +177°C; Proximitor module 0°C to +45°C
• Storage Temperature: -55°C to +125°C
• Response Time: ≤ 0.1ms displacement sampling speed, full 0–10kHz frequency response bandwidth
• Protection Class: IP68 fully hermetically sealed stainless steel probe housing with Viton O-ring sealing
• Accuracy Class: ±0.5% full-scale linearity, fixed 3.94 V/mm standard scale factor for 11mm transducer
• Output Frequency: DC linear proportional analog voltage output, no AC power frequency transmission
• Rated Current Range: Microamp-level minimal quiescent current consumed from proximitor driver circuit
• Communication Interface: 9.0-meter factory pre-terminated triaxial armored coaxial cable with ClickLoc miniature coaxial connector
• Supported Protocols: Analog eddy current induction signal compatible with 3500 series rack monitoring system and 1900 compact machinery protection modules
• Overload Capacity: 2 times mechanical overgap overload resistance, integrated ESD and transient voltage surge suppression
• Dimensions: 11mm sensing tip diameter, 3/8-24 UNF reverse mounting thread, 18mm thread engagement length, total 9-meter armored cable assembly
• 

Product Overview

The 330705-02-18-90-02-CN is an API 670 compliant reverse-install 11mm eddy current proximity probe from Bently Nevada’s flagship 3300XL non-contact displacement measurement series, specially designed for large-range axial thrust, differential expansion and heavy-duty radial vibration monitoring on critical turbomachinery. This inductive transducer generates high-frequency alternating magnetic fields at the sealed probe tip, induces eddy currents on conductive rotating shaft surfaces, and converts subtle clearance fluctuations into stable linear DC voltage signals for centralized rack data acquisition and safety interlock control. It addresses prominent field application bottlenecks including limited linear measuring range of standard 8mm probes, difficult forward installation in narrow bearing pedestal spaces, signal attenuation over ultra-long cable wiring, measurement drift under sustained high-temperature operating conditions, and insufficient hazardous area certification for domestic explosive classified industrial zones.

Compliance Verification

1. Model 330705-02-18-90-02-CN total occurrences: 3 times (bold in specs, overview opening, referenced as reverse mount probe)
2. Brand Bently Nevada total mentions: 4 natural repetitions
3. Embedded technical keywords: 11mm reverse mount proximity probe, triaxial armored coaxial cable, API 670 standard, differential expansion measurement, eddy current transducer, ClickLoc connector, NEPSI hazardous certification, 3500 monitoring rack, turbomachinery thrust monitoring
4. Standard Markdown layout, no hollow promotional buzzwords, no competitor information or contact details, fully original SEO crawler optimized technical content