Bently Nevada 330704-020-100-90-02-00 3300 XL 11 mm Proximity Probe

Description

Metric M14 x 1.5 threaded stainless steel probe body with FEP-coated stainless steel armor (base model 330704), configured with a 20 mm unthreaded length (Option 020), 100 mm overall case length (Option 100), and a 9.0 m total length (Option 90) — 330704-020-100-90-02-00. This 3300 XL 11 mm Proximity Probe provides non-contact eddy-current displacement measurement, pairing with a 3300 XL 11 mm Proximitor sensor and extension cable. The integrated flexible stainless steel armor provides physical protection against mechanical abrasion and harsh industrial environments.

Unlike shorter variants or configurations without protection, this specific probe features a 9.0 m continuous cable length, which eliminates the need for an intermediate extension cable in short-run installations, and incorporates standard miniature coaxial ClickLoc connectors (Option 02). This configuration is supplied without agency approval requirements (Option 00) for standard industrial applications.

Features

• M14 x 1.5 metric threaded case made of AISI 304 stainless steel with FEP-coated stainless steel armor.
• 20 mm unthreaded length option (020) and 100 mm overall case length option (100).
• 9.0 meter (29.5 feet) total probe length option (90).
• Miniature coaxial ClickLoc connector option (02) without connector protector.
• No agency approval option (00) for general-purpose installations.
• Polyphenylene sulfide (PPS) probe tip material designed to withstand high-pressure differentials.
• 11 mm probe tip diameter offering a 4.0 mm (160 mils) linear range.

Applications

Typical industrial applications include:

• Turbine and compressor shaft vibration monitoring.
• Rotor axial position and thrust measurements on steam turbines.
• Ramp differential expansion measurements.
• Rod position or rod drop monitoring on reciprocating compressors.
• High-vibration machinery protection systems.

Ordering Information

Technical Specifications

Installation Guidelines

• Install according to the recommended case torque of 21.1 N-m (187 in-lb) for M14 x 1.5 threaded cases. Do not exceed the maximum rated torque of 63.3 N-m (560 in-lb).
• Maintain a minimum cable bend radius of 25.4 mm (1.0 in) for armored cables.
• Set the probe gap to 2.5 mm (100 mils) using a physical feeler gauge or voltage monitoring via the Proximitor sensor output.
• Hand-tighten the miniature coaxial ClickLoc connectors (finger tight) plus up to 0.565 N-m (5 in-lb) of torque.
• Ensure the connection point between the probe lead and extension cable is properly supported and isolated from standing fluids or oils (silicone tape is not recommended in turbine oil environments).

Compliance and Certifications

• Electromagnetic Compatibility (EMC): Directive 2014/30/EU (EN 61000-6-2, EN 61000-6-4)
• Restriction of Hazardous Substances (RoHS): Directive 2011/65/EU
• Damp Heat Testing: Tested to IEC 68-2-3