Bently Nevada | 330851-02-000-050-50-01-CN 25mm Probe

Bently Nevada 330851-02-000-050-50-01-CN 25mm Proximity Probe

Bently Nevada 330851-02-000-050-50-01-CN | 3300 XL 25mm Proximity Probe with M30x2 threading, 50mm stainless steel case, and SST armor. Provides 0.787 V/mm (20 mV/mil) output over a 12.7 mm (500 mils) linear range. Engineered for differential expansion, shaft position, and vibration monitoring in steam turbines, compressors, and large rotating machinery. CN suffix denotes country-specific certifications.

Key Features

12.7 mm (500 mils) linear measurement range. 0.787 V/mm (20 mV/mil) scale factor. M30x2 industrial threading (Option 02). 50mm AISI 304 stainless steel case (Option 050). 5.0m (16.4 ft) FluidLoc cable with SST armor (Option 50-01). PEEK probe tip material. Recommended torque 68 N·m, maximum 163 N·m. Operating temperature -35°C to +200°C, short-term up to +250°C. Weight approx. 330g (11.6 oz) with armor. Country-specific CN certification. Direct replacement for 7200 25mm, 35mm, and 25mm DE systems.

Technical Specifications

Ordering Code Breakdown

330851-02-000-050-50-01-CN

330851 – 3300 XL 25mm Proximity Probe.
02 – Probe Case Type: M30x2 Thread.
000 – Unthreaded Length: 0 in.
050 – Overall Case Length: 50 mm.
50 – Total Length: 5.0 m (16.4 ft).
01 – Armor Option: With SST Armor.
CN – Country Specific Approval.

Temperature Schedule

Installation Notes

Mount probe using M30x2 threading. Apply recommended torque of 68 N·m (50 ft·lb), not exceeding 163 N·m (120 ft·lb). Ensure minimum target size of 61 mm (2.4 in) diameter. Maintain operating temperature within -35°C to +200°C range. For differential expansion applications, mount probes on same collar or complementary ramps. SST armor provides mechanical protection for probe cable in harsh turbine environments.

Engineering Advantages

12.7 mm linear range supports extensive differential expansion monitoring. PEEK tip and AISI 304 stainless steel withstand harsh DE environments up to 200°C continuous. SST armor protects cable in high-wear installations. FluidLoc cable prevents oil leakage. Direct replacement for 7200 25mm, 35mm, and 25mm DE systems without monitor recalibration. CN certification enables country-specific hazardous area installation.

FAQs

Q1: What is the linear measurement range?
A1: 12.7 mm (500 mils) with 0.787 V/mm (20 mV/mil) output.

Q2: What is the weight with armor?
A2: Approx. 330g (11.6 oz) for 50mm case with 5m armored cable.

Q3: Can this probe replace older 7200 series systems?
A3: Yes, it directly replaces standard 7200 25mm, 35mm, and 25mm DE systems without monitor configuration changes.