Bently Nevada 330703-000-070-10-02-05 Proximity Probe

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Bently Nevada 330703-000-070-10-02-05 is an eddy‑current proximity probe from the 3300 XL 5 mm sensor family for Bently Nevada turbine supervisory and machinery protection systems, manufactured by Baker Hughes. This compact non‑contact sensor measures radial shaft vibration, thrust position, shaft runout and static clearance on critical rotating equipment. It must be paired with a matched 3300 XL extension cable and compatible proximitor to convert metal target gap into a linear voltage signal, feeding measurement data into Bently 3500 monitor racks for trending, alarm and protection trip functions.

The 330703 series is the smaller 5 mm 3300 XL probe variant, designed for installations with limited physical space, narrow bearing housings or tight mounting constraints where larger 8 mm and 11 mm probes cannot fit. It retains the core advantages of the 3300 XL platform: stable temperature performance, good linearity and strong resistance to signal shift caused by variations in shaft metallurgy and surface finish. Since the measurement relies on eddy‑current induction without physical contact, there is no friction or wear between the probe tip and rotating shaft, supporting continuous long‑term operation at high rotational speeds.

When energized by the paired proximitor, the probe coil generates a high‑frequency alternating magnetic field. Eddy currents form on the nearby metal target surface, changing the coil’s impedance. The proximitor demodulates this impedance change and outputs a DC voltage proportional to the gap distance. This signal can be used to capture dynamic vibration waveforms, track slow thrust movement and detect sudden clearance changes that indicate bearing degradation, rotor rubs or other dangerous machine conditions, fully suitable for API 670 machinery protection workflows.

Key Features

• 3300 XL 5 mm eddy current proximity probe, part number 330703-000-070-10-02-05
• Compact probe body for tight installation spaces and confined bearing enclosures
• Non‑contact sensing, eliminating mechanical wear between probe and shaft target
• Consistent linearity and temperature stability for continuous machinery supervision
• Tolerant to oil mist, lubricants, dust and common contaminants inside bearing housings
• Requires matched 3300 XL extension cable and proximitor for calibrated measurement
• Threaded mounting design for precise gap adjustment during commissioning
• Fully interoperable with Bently Nevada 3500 monitors and legacy 3300 rack systems
• Compliant with API 670 specifications for safety‑critical TSI applications
• Heavy‑duty construction for power, oil, gas, petrochemical and offshore environments

Technical Specifications

• Model Series: 3300 XL
• Full Part Number: 330703-000-070-10-02-05
• Brand: Bently Nevada (Baker Hughes)
• Sensor Type: Eddy current proximity probe
• Nominal Sensing Diameter: 5 mm
• Measured Target: Ferrous and non‑ferrous metal shaft surfaces
• Typical Linear Range: 0.125 mm to 1.125 mm
• Installation: Threaded mounting into bearing housing or custom probe bracket
• System Matching: 3300 XL extension cable + 3300 XL proximitor
• Compatible Monitors: Bently 3500 vibration and position monitors, legacy 3300 racks
• Primary Measurements: Radial vibration, thrust position, shaft runout, static gap
• Cable configuration: Integral cable defined within the full part ordering code

Common Applications

The Bently Nevada 330703-000-070-10-02-05 5 mm proximity probe is widely used on steam turbines, gas turbines, centrifugal compressors, high‑speed process pumps, blowers and small expanders. It is the preferred selection when mounting clearance is restricted and a smaller probe footprint is mandatory. Typical sites include thermal power plants, combined‑cycle facilities, refineries, chemical plants, LNG auxiliary systems and offshore skid packages. It is commonly purchased for new instrumentation builds, field retrofits, scheduled sensor replacement and spare inventory for existing 3300 XL measurement loops.

330703-000-070-10-02-05

Our Supply Information

We supply original Bently Nevada 330703-000-070-10-02-05 proximity probes. Every unit passes visual inspection and functional checking before shipment. We can supply matched extension cables and proximitors to complete the full measurement chain. Our inventory covers the complete range of Bently 3300 XL sensors, cables, proximitors and 3500 rack modules. International shipping via DHL, FedEx and UPS is available. We can provide commercial invoices, packing lists, certificates of origin and other standard export documents for industrial automation spare part orders.

Contact our sales team if you need a full measurement loop quotation, calibration confirmation, cable and proximitor matching, lead time, unit price or bulk inquiry for 330703-000-070-10-02-05. We can also verify compatibility with your existing 3500 monitor and system configuration.

BENTLY BRAND

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