Bently Nevada 330851-05-000-040-50-01-05 3300 XL 25 mm Proximity Probe

SKU 330851-05-000-040-50-01-05

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Manufacturer: Bently Nevada
Product No.: 330851-05-000-040-50-01-05
Country of origin:United States
Product Type: 3300 XL 25 mm Proximity Probe
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 350g
Dimensions: 70 mm x 120 mm x 120 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Description

330851-05-000-040-50-01-05: This 3300 XL 25 mm proximity probe configuration is specified by its non-standard 1-1/2-12 UNF English thread, 0.0 inches of unthreaded length, 4.0 inches of overall case length, 5.0-meter system length, stainless steel armor, and multiple hazardous area approvals. Operating as an eddy-current non-contact displacement measurement transducer within the 3300 XL 25 mm proximity transducer system, it is optimized for mid-to-large machinery thrust position, rod drop, and differential expansion monitoring.

Unlike standard configurations that rely on smaller-diameter probes, this 25 mm probe offers an extended 12.7 mm (500 mils) linear range. Robust protection against mechanical wear and fluid bypass is achieved through Option 01 flexible AISI 302 stainless steel armor coated in a perfluoroalkoxyethylene (PFA) outer jacket, standard front/rear tip sealing, and triaxial FluidLoc cabling.

Features

Option 05 Case Type: Constructed of durable AISI 304 stainless steel with a non-standard 1-1/2-12 UNF English thread.
Option 01 Protective Armor: Flexible AISI 302 stainless steel armor with a standard outer PFA jacket provides mechanical safety.
FluidLoc Triaxial Cable: Standard 75 Ohm triaxial cable featuring integrated front and rear seals to isolate the probe tip from moisture ingress.
Zero Unthreaded Length: The 0.0-inch unthreaded case profile (Option 000) maximizes thread engagement and physical mounting stability.
5.0-Meter System Length: Option 50 designates a 5.0-meter system length calibrated for direct connection to a 3300 XL 25 mm Proximitor sensor.
Option 05 Approvals: Certified for hazardous environments with multiple global agency approvals, including ATEX, IECEx, and CSA.

Applications

Steam turbine differential expansion (DE) tracking and axial growth monitoring
Thrust position measurement on large industrial turbomachinery shafts
Reciprocating compressor piston rod-drop style tracking
Eddy-current dynamic displacement profiling for large mechanical targets

Ordering Information

Option Segment	Code on This SKU	Description / Meaning
Orderable Part Number	330851-05-000-040-50-01-05	3300 XL 25 mm Proximity Probe
A: Probe Case Type Option	05	Non-standard 1-1/2-12 UNF thread
B: Unthreaded Length Option	000	0.0 in unthreaded length
C: Overall Case Length Option	040	4.0 in overall case length
D: Total Length Option	50	5.0 metres (16.4 feet)
E: Armor Option	01	With AISI 302 SST armor with PFA outer jacket
F: Agency Approval Option	05	Multiple Approvals (CSA, ATEX, IECEx, etc.)

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Part Number/Model	330851-05-000-040-50-01-05
Transducer System Type	3300 XL 25 mm Proximity Transducer System
Probe Tip Diameter	25 mm
Linear Range	12.7 mm (500 mils)
Average Scale Factor (ASF)	0.787 V/mm (20 mV/mil) nominal
Nominal Range Limits	Begins at 0.63 mm (25 mils) and extends to 13.33 mm (525 mils)
Deviation from Best Fit Straight Line (DSL)	Less than +/-0.31 mm (+/-12 mils) under standard parameters
Extended Temp DSL Deviation	Remains within +/-0.92 mm (+/-36 mils) across full operating limits
Frequency Response	0 to 2.7 kHz (+0, -3 dB typical with up to 305 m field wiring)
Recommended Minimum Target Size	61 mm (2.4 in) diameter flat target
Operating and Storage Temperature (Probe)	-35 degC to +200 degC (-31 degF to +392 degF)
Short Term Temperature Limit (Probe)	+250 degC (+482 degF) maximum for less than 24 hours
Probe Tip Material	Polyetheretherketone (PEEK)
Probe Case Material	AISI 304 stainless steel (SST)
Cable Impedance and Insulation	75 Ohm triaxial, perfluoroalkoxyethylene (PFA) insulated FluidLoc cable
SST Armor construction	Flexible AISI 302 stainless steel with PFA outer jacket
Wrench Flats and Nut Size	1-3/8 in lock nut and 1-5/16 in wrench flats
Tensile Strength (Maximum Rated)	330 N (75 lb) probe case to lead; 270 N (60 lb) at lead to cable connectors
Minimum Bend Radius	25.4 mm (1.0 in) with or without SST armor
Connector Type and Material	Miniature ClickLoc connectors (gold-plated brass and gold-plated beryllium copper)

Installation Guidelines

Torque Limits: When securing the 1-1/2-12 threaded case, do not exceed the maximum rated torque of 163 N-m (120 ft-lb). The recommended mounting torque is 68 N-m (50 ft-lb).
Shielding Integrity: Maintain continuous coaxial shielding from the probe lead through to the Proximitor terminal strip. Ensure the shield is isolated from ground loops.
Moisture Protection: Fully engage the Viton O-ring and compression seal during installation. Ensure the supplied fluorosilicone connector protectors are deployed and hand-tightened.
Wrench Flat Clearance: Utilize the integrated 1-5/16 in wrench flats to adjust probe depth. Secure the locking nut using standard predrilled safety wire holes.

Compliance and Certifications

ATEX/IECEx: Ex ia IIC T5...T1 Ga, Ex ia IIIC T90 degC...T280 degC Dc (for EPL Ga and Gc); Ex nA/ec IIC T5...T1 Gc
cNRTLus: Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Division 1, Groups A, B, C, D; Class II, Division 1, Groups E, F, G; Class III
CE Mark: Compliant with European RFI/EMI requirements
RoHS: Fully compliant with restriction of hazardous substances standards

FAQ

What does the A:05 case type option signify on this Bently Nevada probe?

The 05 option designates a non-standard 1-1/2-12 UNF English thread case made from AISI 304 stainless steel.

Is the triaxial cable on the 330851-05-000-040-50-01-05 probe armored?

Yes, the 01 option specifies a flexible AISI 302 stainless steel armor with a perfluoroalkoxyethylene (PFA) outer jacket over the 75 Ohm triaxial FluidLoc cable.

What is the total length of the probe and what system length does it connect with?

The 50 option specifies a 5.0-meter system length. It is designed to connect directly with a compatible 5.0-meter 3300 XL Proximitor sensor.

Does this probe support deployment in hazardous industrial areas?

Yes, the 05 option provides multiple agency approvals including ATEX, IECEx, and CSA certifications for intrinsically safe and non-incendive environments.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Bently Nevada 330851-05-000-040-50-01-05

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

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12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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