330130-070-00-05 3300 XL Non-Armored Cable Bently Nevada

Product Overview

The 330130-070-00-05 is a premium 7.0-meter non-armored standard extension cable manufactured in the U.S.A. for the industry-standard Bently Nevada 3300 XL 8mm Proximity Transducer System. This high-precision coaxial cable transmits critical eddy current frequency signals between proximity probes and Proximitor Sensors. It plays an indispensable role in monitoring shaft vibration, position, and radial speed on high-speed rotating machinery—such as steam turbines, centrifugal compressors, and large industrial pumps—ensuring reliable data for critical asset protection loops.

Core Technical Advantages

• Detailed Suffix Logic Breakdown:
  • -070: Configures a precise total electrical and physical cable length of 7.0 meters (22.9 feet).
  • -00: Specifies a standard, lightweight non-armored cable configuration for optimized routing within conduit channels.
  • -05: Confirms international hazardous area safety approvals including CSA, ATEX, and IECEx certifications.
• Engineered Electrical Performance: Features strict factory-calibrated DC resistance tolerances ($1.54 \pm 0.23\,\Omega$ core resistance) to prevent signal drift and maintain baseline loop calibration.
• Optimized Capacitance Profile: Maintains a low typical capacitance of 69.9 pF/m (21.3 pF/ft), preventing signal attenuation and roll-off over extended measurement loops.
• Hazardous Deployment Ready: Certified for implementation in volatile environments when integrated with nonincendive circuits or isolated safety barriers.

Technical Specifications

Installation & Maintenance Guide

Connector Sealing Constraints

Each 330130-070-00-05 cable ships with specialized silicone sealing tape. While this tape can replace rigid mechanical connector protectors in mild environments, you must never utilize silicone tape if the probe-to-extension connector joint faces direct exposure to corrosive turbine oil. Use oil-tight connector protectors instead.

Field Wiring and Monitor Distance

When routing data from the Proximitor Sensor to a monitoring rack, employ high-quality 3-conductor shielded triad field wiring (0.2 to 1.5 mm² or 16 to 24 AWG) with tinned leads. Keep the maximum field wiring distance below 305 meters (1,000 feet) to prevent high-frequency signal roll-off or amplitude attenuation.

Power Rail and Barrier Matching

The companion Proximitor Sensor requires a stable -17.5 Vdc to -26 Vdc supply for nonincendive loops, drawing 12 mA maximum. If safety barriers are installed, the voltage must remain restricted between -23 Vdc and -26 Vdc. Operating the loop at a voltage more positive than -23.5 Vdc can degrade the 2 mm linear calibration spectrum.

Engineering Advantages

• Exceptional Moisture Stability: Exhibits less than a 3% change in Average Scale Factor (ASF) even when tested across continuous 93% relative humidity for 56 straight days under IEC standard 68-2-3 conditions.
• Reduced Mechanical Weight Profile: Weighing only 34 g/m compared to the 103 g/m armored variant, this standard profile puts significantly less physical stress on suspended junction layouts.
• Flawless System Accuracy: Pre-calibrated to deliver full dynamic accuracy when matched with standard AISI 4140 steel targets, a 3300 XL 8mm probe, and a -24 Vdc source gapped at 1.27 mm (50 mils).

Technical FAQs

Q1: What is the main structural difference between the -00 and -01 cable option?
A1: The -00 suffix denotes a lightweight standard cable profile lacking external metal wrap. Option -01 includes a heavy stainless steel flexible armor outer layer. Use -00 inside protective metal conduits or wiring trays.

Q2: Why is silicone tape banned in areas exposed to turbine oil?
A2: Turbine oil can degrade and break down silicone adhesives over time. If fluid bypasses the tape barrier and coats the coaxial interface, it creates signal contamination, causing false vibration alarms or system trips.

Q3: Does this 7-meter extension cable include FluidLoc liquid mitigation?
A3: No, the -00 option is a standard high-performance cable. If your engineering prints mandate internal oil-block seals to prevent migration through the cable core, a specialized FluidLoc-configured assembly variant must be specified.