Bently Nevada 330706-005-046-10-02-05 3300 XL 11 mm Reverse Mount Probe

Description

Option 005 (5 mm unthreaded length), Option 046 (46 mm overall case length), and Option 10 (1.0 m total length) specify this metric M10 x 1 threaded 3300 XL 11 mm reverse mount probe configuration — 330706-005-046-10-02-05. This non-contact eddy-current displacement probe is used within 3300 XL 11 mm monitoring chains to measure dynamic shaft vibration, axial position, and speed in industrial rotating machinery.

Unlike standard mount configurations, this reverse mount model is threaded through the back of a housing or bracket, facilitating installation in tight spaces where access to the target shaft is restricted. This specific configuration operates without armor or outer protective sleeving. It connects directly to a 330730 extension cable and a 330780 Proximitor sensor, providing a calibrated linear range of 4.0 mm (160 mils) over AISI 4140 target material.

Features

• Option 005 specifies a 5 mm unthreaded length on a metric M10 x 1 threaded body.
• Option 046 provides a 46 mm overall case length for reverse mounting installations.
• Option 10 provides a 1.0 m (3.3 ft) integrated coaxial cable with FEP insulation.
• Option 02 specifies a miniature ClickLoc coaxial connector with gold-plated brass contacts.
• Option 05 provides multiple hazardous area agency approvals, including ATEX, IECEx, and North American certifications.
• Locknut with pre-drilled safety wire holes is supplied standard with the reverse mount assembly.

Applications

This proximity probe is used for non-contact shaft vibration, axial position, and speed measurements. It is installed in rotating machinery such as steam turbines, gas turbines, compressors, and pumps, particularly in tight-clearance reverse-mount housing configurations.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Thread the probe into the reverse mount housing from the back side of the machine enclosure.
• Use the supplied metric locknut with safety wire holes to secure the probe after adjusting the gap.
• Establish the recommended gap setting of 2.5 mm (100 mils) using a voltmeter to verify the dc output voltage from the Proximitor sensor (typically -10 Vdc at mid-range).
• Do not exceed the maximum rated installation torque of 22.6 N-m (200 in-lb) to avoid damage to the case.
• Maintain the minimum bend radius of 25.4 mm (1.0 in) for the coaxial cable to prevent internal conductor damage.
• Ensure the coaxial connections are clean and dry. Finger-tighten the ClickLoc connectors securely.

Compliance and Certifications

• CSA / NRTL/C: Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Div 1, Groups A, B, C, D (Intrinsically Safe when installed with barriers)
• CSA / NRTL/C: Class I, Zone 2: AEx/Ex nA IIC T5...T1 Gc; Class I, Div 2, Groups A, B, C, D (Non-Incendive)
• ATEX/IECEx: Ex ia IIC T5...T1 Ga (Intrinsically Safe)
• ATEX/IECEx: Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc (Zone 2)
• European Community Directive: EMC Directive 2014/30/EU, RoHS Directive 2011/65/EU
• China RoHS: EFUP designation of 15 years
• Functional Safety: SIL 2 capable (HFT=0), SIL 3 capable (HFT=1)