Bently Nevada 330702-00-25-10-02-05 3300 XL 11 mm Proximity Probe

Description

Option 00 (0.0 in unthreaded length), Option 25 (2.5 in overall case length), and integral stainless steel armor specify this 3300 XL 11 mm proximity probe configuration — 330702-00-25-10-02-05. This eddy-current non-contacting displacement probe features a 1/2-20 UNF threaded case with a protective AISI 302 stainless steel armor sleeve and FEP outer jacket over a 1.0-meter (3.3 feet) standard coaxial cable. It is configured with a miniature coaxial ClickLoc connector and is certified for multiple hazardous area approvals. Unlike non-armored variations such as the 330701, the armored 330702 model provides mechanical protection against debris, abrasion, and physical impact in demanding rotating machinery environments. The large 11 mm tip delivers an extended linear range of 4.0 mm (160 mils), enabling accurate axial (thrust) position, ramp differential expansion, and reciprocating compressor rod drop monitoring when paired with a compatible 330780 Proximitor sensor and 330730 extension cable.

Features

• Base model 330702 provides an integrated AISI 302 stainless steel armor sleeve with an FEP outer jacket for enhanced mechanical durability.
• Option 00 specifies a 0.0-inch unthreaded length, allowing full case threading for deep engagement or precise mounting positioning.
• Option 25 establishes a 2.5-inch overall case length with 1/2-20 UNF-2A threads.
• Option 10 specifies a 1.0-meter (3.3 feet) total cable length, requiring a matching extension cable to reach system length configurations.
• Option 02 provides a gold-plated miniature ClickLoc coaxial connector for low-resistance, secure interlocking connections.
• Option 05 grants multiple hazardous area approvals, enabling installation under international intrinsic safety (ia) and non-sparking (nA/ec) regulatory standards.

Applications

• Turbine and compressor shaft vibration measurements.
• Axial (thrust) position measurements on fluid film bearing machines.
• Ramp differential expansion measurements on steam turbines.
• Rod position or rod drop measurements on reciprocating compressors.
• Tachometer, zero speed, and Keyphasor phase reference signal generation.

Ordering Information

Option / Segment	Code on This SKU	Description / Meaning
Orderable Part Number	330702-00-25-10-02-05	3300 XL 11 mm Proximity Probe, 1/2-20 UNF thread, with armor
A - Unthreaded Length Option	00	0.0 in (fully threaded case)
B - Overall Case Length Option	25	2.5 in overall case length (threaded in 0.1 in increments)
C - Total Length Option	10	1.0 meter (3.3 feet) integral probe cable length
D - Connector and Cable-Type Option	02	Miniature coaxial ClickLoc connector, standard cable (armored)
E - Agency Approval Option	05	Multiple Approvals (including CSA, ATEX, IECEx, NEPSI)

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Model Number	330702-00-25-10-02-05
System Type	3300 XL 11 mm Proximity Transducer System
Probe Tip Diameter	11 mm
Case Thread	1/2-20 UNF-2A (threaded AISI 304 stainless steel case)
Cable Construction	75 ohm triaxial, fluoroethylene propylene (FEP) insulated
Armor Protection	Flexible AISI 302 SST armor with FEP outer jacket
Linear Range	4.0 mm (160 mils)
Incremental Scale Factor (ISF)	3.94 V/mm (100 mV/mil) +/-10%
Operating Temperature (Probe)	-51 to +177 degC (-60 to +351 Fahrenheit)
Probe Tip Material	Polyphenylene sulfide (PPS)
Connector Material	Gold-plated brass
Tensile Strength (Max Rated)	330 N (75 lb) probe case to probe lead
Minimum Bend Radius	25.4 mm (1.0 in)
Recommended Torque	15.2 N-m (133 in-lb)
Maximum Case Torque	45.2 N-m (400 in-lb)

Installation Guidelines

• Maintain a minimum bend radius of 25.4 mm (1.0 in) for both armored and non-armored cables to prevent signal loss or physical breakage.
• Install probes using the recommended mounting torque of 15.2 N-m (133 in-lb) to prevent damage to the 1/2-20 threaded case. Do not exceed 45.2 N-m (400 in-lb).
• Ensure connector-to-connector interfaces are finger-tight. The maximum allowable torque is 0.565 N-m (5 in-lb).
• Maintain a proper probe gap, typically 2.5 mm (100 mils) for center-of-range operation within the 4.0 mm (160 mils) linear band.

Compliance and Certifications

• Option 05 Multiple Approvals package covers CSA, ATEX, IECEx, and NEPSI certifications for hazardous areas.
• Intrinsically Safe (ia) compliance when installed with approved zener barriers or galvanic isolators.
• Non-sparking / non-incendive (nA, ec) zone classifications compatible.
• Conforms to CE standards, RoHS directive 2011/65/EU, and China RoHS.
• Functional Safety: SIL 2 (HFT = 0) and SIL 3 (HFT = 1) compatible.