Description
Bently 330705-02-18-10-02-00
Technical Specifications
| Parameter Category | Specific Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Family | 3300 XL 11mm Reverse Mount Proximity Probe |
| Thread Specification | 3/8-24 UNF threads |
| Unthreaded Length | 02 = 2.0 inches (50.8 mm) |
| Overall Case Length | 18 = 1.8 inches (45.7 mm) |
| Total Cable Length | 10 = 1.0 meter (3.3 feet) |
| Cable Option | 02 = Non-armored (standard) |
| Agency Approval | 00 = No agency approval required |
| Probe Diameter | 11.0 mm |
| Linear Range | 4.0 mm (160 mils) |
| Sensitivity | 3.94 V/mm (100 mV/mil) with system |
| Target Material | Calibrated for AISI 4140 steel |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Case Material | AISI 304 stainless steel |
| Operating Temperature (Probe) | -52°C to +177°C (-62°F to +350°F) |
| Storage Temperature | -52°C to +260°C (-62°F to +500°F) |
| Pressure Sealing | Viton O-ring standard |
| Maximum Thread Engagement | 0.563 inches (14.3 mm) |
| DC Resistance | 5.9 ± 0.5 ohms (for 1.0m cable) |
| Typical Capacitance | 69.9 pF/meter |
| Weight | Approximately 0.15 kg |
Key Features
- Reverse Mount Design: Installs from inside the structure with probe tip facing outward
- Long Unthreaded Length: 2.0 inch (50.8mm) smooth section provides substantial extension
- 3/8-24 UNF Thread: Standard imperial thread for North American machinery
- 11mm Diameter with 4mm Range: Large linear range
- TipLoc and CableLoc Technology: Strong mechanical bonds
- ClickLoc Connector: Reliable connection
- Full System Interchangeability: Interchangeable within 3300 XL 11mm system
Application Scenarios
- Internal bearing housing mounting: Installs from inside the bearing housing when external access is limited
- Steam turbine inner casings: Mounts from inside the turbine casing to measure shaft position
- Compressor diaphragms: Installs from inside compressor diaphragms to measure shaft vibration
- Gearbox internal monitoring: Mounts from inside gearbox housings to measure gear shaft vibration
- Generator internal air gap monitoring: Installs from inside generator frame to measure rotor position
- Pump volute internal mounting: Mounts from inside pump volutes to measure impeller position
- Motor end bell internal mounting: Installs from inside motor end bells to measure rotor vibration
- Confined space applications: Ideal where external mounting space is not available
Performance Parameters Identical to other 3300 XL 11mm probes. Linear range 4.0 mm (160 mils), ISF 3.94 V/mm (100 mV/mil) ±10%, standard DSL ±0.10 mm (±4 mils).
Material Composition Identical to other 3300 XL 11mm probes.
Structural Characteristics Cylindrical stainless steel case with 3/8-24 UNF external thread and 2.0 inch smooth unthreaded section. The 1.8 inch overall case length includes the threaded portion. The probe tip is at the end of the 2.0 inch extension, facing opposite to the cable exit direction (reverse mount). The integral cable exits from the threaded end of the case.
Working Principle Identical to other 3300 XL 11mm probes. The reverse mount orientation does not affect the eddy current sensing principle.
Installation Requirements
- Drill and tap mounting hole with 3/8-24 UNF thread from the inside of the structure
- The probe tip will face outward through the mounting hole
- Ensure the 2.0 inch extension provides the correct tip position relative to the target
- Maximum thread engagement is 0.563 inches; do not exceed this depth
- Apply anti-seize compound to threads
- Tighten appropriately; recommended torque 7.5 N·m (66 in·lb), maximum 22.6 N·m (200 in·lb)
- Route cable from inside the structure to the Proximitor
- Connect with ClickLoc connector
