Bently Nevada 330851-06-000-070-10-00-05 3300 XL 25 mm Proximity Probe

Description

Option 06 (M39x1.5 metric thread), Option 000 (0 mm unthreaded length), and Option 070 (70 mm case length) specify the physical build of the 330851-06-000-070-10-00-05, a 3300 XL 25 mm proximity probe engineered for large-target differential expansion and axial displacement measurements.

Unlike standard-profile probe variants utilizing smaller English threads (such as the 1-1/2-12 thread under Option 01) or standard metric threads (like the M30x2 thread under Option 02), this configuration employs a robust M39x1.5 metric thread with a 45 mm lock nut and 36 mm wrench flats. Furthermore, this probe is supplied with a 1.0-meter non-armored FluidLoc triaxial cable (Option 10 and Option 00) and carries multiple hazardous area agency approvals (Option 05) for compatibility with critical machinery protection systems.

Features

• Option 06 case style provides a metric M39x1.5 thread, supplied with a 45 mm lock nut and 36 mm wrench flats.
• Option 000 indicates a fully threaded case length with 0 mm of unthreaded length.
• Option 070 provides a 70 mm overall case length for precise positioning in machinery housings.
• Option 10 supplies a 1.0-meter (3.3 feet) FluidLoc triaxial probe cable with PFA insulation.
• Option 00 specifies a non-armored cable configuration for standard conduit routing.
• Option 05 offers multiple international hazardous area certifications including CSA, ATEX, and IECEx.
• PEEK (polyetheretherketone) probe tip provides robust chemical resistance and electrical isolation.
• AISI 304 stainless steel case material delivers long-term corrosion resistance.
• Miniature male coaxial connector provides secure, low-loss connections to the extension cable.

Applications

Typical applications include:

• Steam turbine differential expansion (DE) monitoring on mid-size to large power generation units.
• Non-contact axial shaft displacement and shaft position monitoring.
• Rotor position and thrust bearing wear measurement on heavy industrial machinery.
• Large-target displacement measurements requiring extended linear range (12.7 mm).

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

To establish safe and proper transducer operation, observe these mounting guidelines:

• Target Size: Ensure the target flat surface is at least 61 mm (2.4 in) in diameter. Smaller target dimensions can restrict the linear range.
• Torque Limits: Tighten the probe case to a recommended torque of 68 N-m (50 ft-lb). Do not exceed the maximum rated limit of 163 N-m (120 ft-lb). Always utilize the supplied 45 mm lock nut.
• Cable Protection: Seal all connector joints using silicone self-fusing tape to protect connections from moisture and oil contamination.
• Bend Radius: Avoid tight routing of the FluidLoc coaxial cable; preserve a minimum bend radius of 25.4 mm (1.0 in).
• System Length Match: Pair the 1.0-meter probe cable with a complementary extension cable to reach exactly 5.0 m or 9.0 m, matching the Proximitor Sensor's designed system length.

Compliance and Certifications

This transducer is approved under multiple hazardous area certification packages (Option 05), including:

• CE: Complies with all relevant European Union electromagnetic and safety directives.
• ATEX/IECEx (Intrinsically Safe): Ex ia IIC T5...T1 Ga for hazardous explosive environments.
• ATEX/IECEx (Non-Sparking/Increased Safety): Ex nA IIC T5...T1 Gc and Ex ec IIC T5...T1 Gc for Zone 2 applications.
• North American Classifications (CSA): Class I, Zone 0, AEx/Ex ia IIC T5...T1 Ga; Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III.
• North American Class I Zone 2: AEx/Ex nA IIC T5...T1 Gc; Class I, Division 2, Groups A, B, C, D.