Description

The Bently Nevada 330130-045-01-00, also cataloged as the 330130 Proximity Extension Cable, operates as a dedicated hardware component for high-frequency analog signal transmission within 3300 XL 8mm Proximity Transducer Systems. It connects a 3300 XL proximity probe tip directly to a remote Proximitor sensor, establishing continuous path impedance matching for eddy-current instrumentation loops. The physical line parameters are strictly balanced to maintain overall loop electrical tuning and eliminate transient attenuation over the distance between the machinery housing and the processing rack.

Suffix Breakdown & Model Matrix

• 330130: Core product identifier for the 3300 XL 8mm Standard Extension Cable platform.
• 045: Cable Length Option designating exactly 4.5 meters (14.8 feet) of physical cable.
• 01: Connector Protector and Cable Option specifying integrated stainless steel armor covering the length of the line.
• 00: Agency Approval Option designating no regional hazardous area certificates required for execution.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The physical composition of the cable plays a critical structural role in locking the overall eddy-current probe scaling to the mandated 7.87 V/mm (200 mV/mil) specification. Because the Proximitor sensor relies on precise radio-frequency resonant loop physics, any deviation in the total network electrical length shifts the gap voltage validation baseline away from the targeted -10 VDC targets. The 4.5 meter length of this armored cable matches with a 0.5 meter probe lead to build a standard 5.0 meter system, or with a 1.5 meter probe lead to create a 6.0 meter tuned configuration. Preserving this electrical length matching suppresses high-frequency signal attenuation, allowing the loop to track complex rotor dynamics and high-speed shaft displacements over the full linear sensing range without artificial distortion.

Frequently Asked Questions

Q: Can this armored extension cable line be disconnected or changed while the machine protection loop is active?

A: Physical disconnection of the ClickLoc joint is safe for the hardware under live conditions. However, uncoupling the coaxial core breaks the RF loop, immediately driving the Proximitor voltage output to its positive limit, causing a NOT OK status, and potentially initiating automatic machine trip logic if voting interlocks are armed.

Q: How does the presence of the AISI 302 stainless steel armor affect the minimum bend radius constraints compared to standard bare coaxial lines?

A: The interlocking stainless steel armor preserves a matching 25.4 mm (1.0 inch) minimum bending radius while providing mechanical crushing protection. Exceeding this physical flex boundary deforms the inner PFA insulation and alters the local capacitance, leading to localized impedance shifts that disrupt the accurate mapping of dynamic shaft vibration.

Field Installation Guidelines

• Connector Cleanliness Check: Inspect the gold-plated miniature coaxial ClickLoc interfaces prior to final physical engagement. Wipe away oil, grease, or moisture using an approved low-residue electronics contact solvent to preserve low-resistance contact paths.
• Torque Rating Execution: Join the male and female coaxial connectors by hand until the locking mechanism clicks home. Tighten the physical connection finger-tight, or apply a precise mechanical torque adjustment to a maximum boundary of 0.565 N-m (5.0 in-lb).
• Armor Mechanical Anchoring: Secure the flexible stainless steel armored casing along structural path supports using padded cable clamps. Avoid running the armored line over sharp structural edges or vibrating machine flanges that could wear through the external PFA protective sleeve.
• Isolation and Conduit Routing: Avoid running this low-voltage sensor cable inside cable trays containing high-power 440 VAC motor supplies. Maintain clean structural isolation to block electromagnetic cross-talk from shifting the analog vibration signal baseline.