Description

Technical Specifications

• Product Model: 330130-075-00-05
• Brand: Bently Nevada (Baker Hughes)
• Warranty: One Year
• Product Type: 3300 XL Standard Extension Cable
• Cable Length: 7.5 m (24.6 ft)
• Input Voltage: Passive interconnect; rated for –17.5 Vdc to –26 Vdc Proximitor supply loop
• Operating Temperature: –51 °C to +177 °C (–60 °F to +350 °F), standard FEP cable
• Storage Temperature: –55 °C to +100 °C (–67 °F to +212 °F)
• Response Time: Passive; signal propagation < 5 ns/m
• Protection Class: IP67 (mated ClickLoc connectors)
• Accuracy Class: Passive component; matched-length contribution to system ISF error < ±1 %
• Output Frequency: DC to 10 kHz (system signal bandwidth)
• Rated Current Range: ≤ 12 mA (Proximitor loop current)
• Communication Interface: 75 Ω triaxial coaxial, miniature ClickLoc connector
• Supported Protocols: Analog eddy-current voltage output (proportional to target gap)
• Overload Capacity: Not applicable (passive cable assembly)
• Dimensions: 7.5 m length; minimum bend radius 25.4 mm (1.0 in)
• Connector Material: Gold-plated brass / beryllium copper
• Connector Torque: 0.565 N·m (5 in·lbf)
• Capacitance: 69.9 pF/m (21.3 pF/ft), typical
• Approvals: CSA, ATEX, IECEx
• 

Product Overview

The 330130-075-00-05 is a 7.5-meter standard extension cable engineered for the Bently Nevada 3300 XL 8 mm proximity transducer system. It bridges the field-mounted proximity probe and the rack- or panel-mounted 3300 XL Proximitor Sensor, carrying both the –24 Vdc excitation supply and the analog gap-proportional voltage signal back to the monitoring system. As a matched-length component, it keeps the system’s 7.87 V/mm (200 mV/mil) incremental scale factor and 2 mm linear range within API 670 tolerances without requiring individual bench calibration of probes, cables, or sensors. The cable uses 75 Ω triaxial construction with FEP insulation and gold-plated ClickLoc connectors, delivering RFI/EMI immunity and repeatable mating in turbine, compressor, and pump environments. It is intended for radial vibration, axial thrust position, Keyphasor reference, and speed measurements on fluid-film bearing machinery in oil and gas, power generation, and heavy industrial plants. Reliability and maintenance engineers use it to replace damaged field wiring or to extend probe runs while preserving full interchangeability across the 3300 XL product family.

Role in the 3300 XL 8 mm Transducer System

The extension cable is the middle element of a three-part eddy-current measurement chain:

1. Proximity Probe — generates the RF field and senses distance to a conductive target.
2. Extension Cable (330130 series) — transports the RF drive and the demodulated DC/AC signal between probe and Proximitor.
3. Proximitor Sensor — conditions the signal and outputs a linear voltage proportional to gap.

Correct system operation requires that probe length + extension cable length = Proximitor Sensor rated total length. For this 7.5 m cable, common pairings include a 0.5 m probe with an 8 m Proximitor, or a 1.0 m probe with a 9 m Proximitor. Mismatched lengths shift the scale factor outside specification and must be avoided.