Bently Nevada 330104-02-25-10-01-00 3300 XL 8 mm Proximity Probe with Armor

Description

Option 02 (20 mm unthreaded length) and Option 25 (250 mm case length) specify this 3300 XL 8 mm armored metric probe configuration — 330104-02-25-10-01-00.

This metric variant is equipped with flexible stainless steel protective armor to shield the coaxial cable against abrasion, mechanical impact, and cutting in demanding industrial machinery environments. Unlike unarmored sibling variants (such as the 330103 series), the 330104-02-25-10-01-00 proximity probe includes a pre-installed flexible conduit made of stainless steel (AISI 302 or 304). The 1.0-meter probe cable terminates in a miniature male ClickLoc coaxial connector, which features a pre-assembled connector protector (Option 01) that shields the connection from fluid ingress, moisture, and dust when coupled to a standard extension cable.

This probe operates as a transducer element within the 3300 XL 8 mm Proximity Transducer System, pairing with a 3300 XL standard extension cable and a 3300 XL Proximitor sensor. The system utilizes eddy-current principles to deliver a voltage output directly proportional to the distance between the probe tip and the observed target (typically AISI 4140 steel). It is applied for static position measurements (such as axial thrust or thermal expansion) and dynamic vibration tracking on fluid-film bearing machines, including steam turbines, gas turbines, compressors, and high-capacity pumps.

Features

• Integrated stainless steel armor (AISI 302 or 304) for robust mechanical protection in severe industrial environments.
• Metric thread design with M10 x 1 pitch and a substantial 250 mm case length for deep or recessed port installations.
• ClickLoc coaxial connector with a pre-installed connector protector (Option 01) to seal against moisture, fluid ingress, and oil contamination.
• Standard 1.0-meter cable length, allowing flexible connection to a 3300 XL extension cable without mismatched system calibration.
• Unthreaded section of 20 mm to prevent thread binding during installation or spatial adjustments.
• No agency approvals required (Option 00), suitable for non-classified or standard safe area installations.

Applications

• Shaft vibration and position monitoring on fluid-film bearing machinery.
• Axial thrust and radial position tracking in steam and gas turbines.
• Rotor dynamics and casing expansion measurements in heavy-duty centrifugal compressors.
• Speed and Keyphasor reference sensing on high-speed rotating shafts.
• General non-contact displacement tracking in severe industrial locations requiring armored cable routing.

Ordering Information

Technical Specifications

Connections and Interfaces

The armored probe cable terminates in a miniature male ClickLoc coaxial connector. This connector is equipped with a pre-installed protective sleeve (connector protector) that slides over the union with the extension cable to provide an environmental seal.

Installation Guidelines

• Ensure that the unthreaded length (20 mm) matches the installation bracket or casing depth to avoid unwanted mechanical interference.
• Secure the probe lock nut (M10 x 1 thread) to the recommended torque of 7.5 N-m (66 in-lbf) during final gapping.
• Observe the minimum bend radius limit of 25.4 mm (1.0 inch) for the armored coaxial cable during routing.
• Always use the ClickLoc connector tightening instructions: finger-tighten the gold "click" connectors for proper electrical connection.
• Avoid exposing the probe tip to materials other than the target (AISI 4140 steel) to preserve calibrated transducer accuracy.