Product Overview

The Bently Nevada 330930-065-05-00 functions as a high-integrity signal transmission pathway within the 3300 NSv (Non-Standard vent) proximity transducer system. Engineered specifically for centrifuges, small pumps, and cooling tower fans where standard probes cannot be utilized, this extension cable maintains the precise electrical impedance necessary for micro-inch displacement measurement. It ensures the stable delivery of eddy current signals from the probe to the proximitor, facilitating real-time monitoring of radial vibration and axial thrust.

This component plays a critical role in Turbine Supervisory Instrumentation (TSI), providing the accuracy required for high-speed machinery protection and emergency shutdown protocols. By utilizing advanced FEP insulation and gold-plated connectors, it resists environmental degradation while preventing signal noise. Whether integrated into a Bently 3500 rack or a Honeywell Experion DCS, this cable ensures your machinery health data remains reliable and actionable.

Suffix Configuration and Signal Logic

The specific alphanumeric string for the 330930 series determines the electrical length and mechanical protection level of the cable assembly.

Cable Length (065)

The "065" suffix designates a 6.5-meter (approximately 21.3 feet) total cable length. In the 3300 NSv architecture, the total electrical length (probe plus extension cable) must be precisely matched to the proximitor calibration—typically 7.0 meters—to maintain a consistent scale factor.

Connector and Armor Option (05)

The "05" suffix specifies the inclusion of stainless steel armor with connector protectors. The armor provides superior mechanical shielding against crushing and abrasion, while the fluorosilicone protectors seal the Click-Loc junctions against oil and moisture ingress.

Agency Approvals (00)

The "00" designation indicates standard global approvals. This confirms the cable assembly meets rigorous safety requirements for industrial environments and is suitable for deployment in both non-hazardous and typical process plant locations.

Technical Specifications

Mechanical Routing and Field Guidance

Effective signal protection begins with proper physical installation. This 6.5-meter armored extension cable requires a minimum bend radius of 25.4 mm (1.0 inch) to ensure the internal coaxial core remains undamaged. When routing through crowded cable trays or conduit, the stainless steel armor prevents mechanical pinching, but installers must still avoid sharp edges that could compromise the outer jacket.

Technicians must ensure the Click-Loc connectors are fully engaged; a physical "click" confirms a low-impedance connection. The included connector protectors (Suffix 05) must be properly seated to bridge the junction between the probe and extension cable. This seal is the primary defense against "signal drift" caused by moisture or synthetic lubricant contamination at the connection point.

Asset Integrity and Environmental Resilience

The 330930 extension cable thrives in high-temperature and chemically aggressive environments typical of hydrocarbon processing. Its armored construction and high-performance dielectric materials ensure it remains immune to electromagnetic interference (EMI) from nearby high-voltage equipment. This resilience allows for seamless data integration into existing plant control systems, ensuring that vibration alerts are triggered by actual shaft movement rather than environmental noise or cable fatigue.

Ordering info

(1) Bently Nevada 330930-065-05-00 Armored Extension Cable.

(2) Pre-installed stainless steel armor and connector protectors.

(3) Calibration compliance certificate.

(4) Individual protective dust caps for gold-plated connectors.

Global Logistics and Packaging

We ensure all orders ship within 3-5 days when payment finish. To protect the precision-tuned coaxial structure, each cable is housed in anti-static industrial packaging and secured within reinforced shipping cartons. Global fulfillment is managed via DHL, FEDEX, and UPS, providing rapid, trackable delivery to your facility. We ship every unit in "Original Pack" condition, vacuum-sealed to preserve the integrity of the connectors and armor during transit.

Machinery Monitoring FAQs

Q1: Can I use this 6.5m cable with a 0.5m probe for a 7m system?

A1: Yes. The 6.5m extension cable is specifically intended to be paired with a 0.5m probe to reach the 7.0-meter total electrical length required by a 7m proximitor sensor.

Q2: What benefit does the stainless steel armor provide in this configuration?

A2: The armor prevents the coaxial cable from being crushed or cut in harsh industrial areas, ensuring the signal path remains intact even in locations with high mechanical activity or maintenance traffic.

Q3: Is the 330930 cable compatible with standard 3300 XL probes?

A3: No. The 3300 NSv series uses a unique impedance profile and connector size designed for small-target applications. Mixing NSv components with XL components will cause significant measurement errors and "Sensor Not OK" alarms.