Bently Nevada 330704-000-050-10-02-05 – Proximitor Sensor for 3300 XL Proximity Measurements

The Bently Nevada 330704-000-050-10-02-05 is a Proximitor sensor typically used with the 3300 XL proximity transducer system to measure shaft vibration, radial/axial position, and phase reference on critical rotating equipment. From my experience, the “050” indicates a 5.0 m system length pairing (probe + extension cable + Proximitor), which makes it a straightforward drop-in for common API 670-compliant installations. It’s a solid choice when you want stable eddy-current measurement and clean analog output into 3500/3300 monitors without fiddly setup.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in-stock items; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Designed for 3300 XL systems – Works with matched probe and extension cable for a 5.0 m “system length.”
• Analog output for vibration/position – Voltage output is typically proportional to shaft displacement (around −200 mV/mil, 7.87 mV/µm).
• API 670-friendly performance – Commonly applied in API-grade turbomachinery monitoring where stable bias and linearity matter.
• Rugged build for plant environments – Suited to panel/bulkhead mounting in a protective cabinet near the machine train.
• Broad monitor compatibility – Connects to Bently Nevada 3500/3300 monitoring cards via standard screw terminals.
• Predictable calibration – Factory-matched scaling when paired with the correct probe and cable length, which reduces onsite tuning.
• Flexible configurations – Option codes (e.g., 10-02-05) typically denote mounting/connector and agency approval variants.

Technical Specifications

Application Fields

You might notice this model most often on large rotating assets where shutdown protection and condition monitoring are non-negotiable:

• Steam and gas turbines – radial vibration, differential expansion, and shaft position
• Compressors and expanders – bearing vibration and phase reference when used with a Keyphasor setup
• Pumps, fans, and blowers – vibration trending for reliability programs
• Gearboxes – shaft relative vibration and runout assessment

Advantages & Value

• Reliability – Stable bias and scaling help reduce nuisance trips in protection systems.
• Compatibility – Pairs with Bently Nevada 3300/3500 monitors; aligns with common API 670 practices.
• Lifecycle savings – Drop-in replacement on existing racks shortens outage time and cuts commissioning effort.
• Technical support – Matching by system length simplifies calibration and makes fault isolation more predictable.

Installation & Maintenance

• Cabinet & wiring – Install the Proximitor in a ventilated cabinet; route coax separately from power cables to minimize EMI; maintain bend radius on the cable.
• Grounding – Use a single-point ground and keep shield terminations consistent to avoid ground loops.
• Setup checks – Verify bias voltage at the monitor input, confirm sensitivity (−200 mV/mil typical), and perform gap checks with feeler gauges.
• Routine care – Inspect connectors for oil ingress, clean terminals annually, and verify monitor firmware revisions during planned outages.
• Safety – Lockout/tagout rotating equipment; confirm probe tip clearances before startup.

Quality & Certifications

• Typically conforms to CE and UL/CSA requirements for industrial environments
• RoHS compliance on most current builds
• Manufacturer’s warranty applies; our supply warranty coverage: 365 days

Compatible/Supporting Components (for reference)

In many cases, this Proximitor is paired with 3300 XL proximity probes and matched extension cables for the same system length. Typical companions include:

• 3300 XL proximity probes (e.g., 330104/330105 series, depending on tip size and thread)
• 3300 XL extension cables matched for 5.0 m system length
• 3500 monitoring modules (protection and condition monitoring channels)

A maintenance lead at a gas-compressor station told us the 5 m system length “seems to be the sweet spot” for keeping the Proximitor in a clean panel while leaving the probe close to the bearing housing, which typically reduces drift from temperature cycling.