330780-51-05 Bently Nevada 3300 XL 11mm Proximitor Sensor

Technical Profile: Industrial Vibration Intelligence

• The 330780-51-05 represents the advanced signal processing core of the 3300 XL 11mm Proximity Transducer System.
• It converts eddy current signals from an 11mm probe into a linear voltage output proportional to the shaft gap.
• Engineered for high-reliability environments, the 330780-51-05 features a compact footprint for DIN-rail arrays.
• Improved RFI/EMI immunity prevents signal interference from nearby high-frequency radio equipment.

Configuration Breakdown & Hierarchy

• Root Series: 330780 (3300 XL 11 mm Proximitor Sensor)
•     └── Option -51: System Length & Mounting
•         ├── Length: 5.0 Meters (16.4 Feet) Total System Calibration
•         └── Mount: Standard 35mm DIN-rail Hardware Interface
•     └── Option -05: Certification & Approvals
•         └── Standard: Multiple International Agency Approvals (ATEX, CSA, IECEx)

Global PLC Spare HUB’s Insight

• The 330780-51-05 is a critical upgrade for plants experiencing high VFD noise or wireless signal drift.
• The "SpringLoc" terminal block provides a gas-tight connection that effectively resists industrial vibration.
• We recommend this 11mm system for axial thrust applications where a wider linear range is mandatory.
• The thin aluminum housing allows for maximum density in control cabinets without compromising thermal dissipation.

Detailed Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)
• Model Number: 330780-51-05
• Sensor Type: 11mm Proximitor Sensor
• Input Power: -17.5 Vdc to -26 Vdc (12 mA maximum consumption)
• Output Resistance: 50 Ω (Optimized for long-distance signal integrity)
• Supply Sensitivity: Less than 2 mV change per volt change in input
• Housing Material: A380 Grade Die-cast Aluminum
• Humidity Rating: 100% Condensing (Non-submersible)
• Operating Temp: -52 degrees Celsius to +100 degrees Celsius
• Storage Temp: -52 degrees Celsius to +105 degrees Celsius

Diagnostic Capabilities & Application Scenarios

• RFI Immunity: Designed to prevent transducer system errors caused by nearby high-frequency radio signals.
• Voltage Monitoring: Reduced linear range occurs if supply voltage becomes more positive than -23.5 Vdc.
• Turbomachinery: Monitors radial vibration and axial thrust position for large steam and gas turbines.
• Target Compatibility: Factory-calibrated to AISI 4140 steel; supports custom material calibration upon request.

Logistics & Warranty Terms

• Express Logistics: Worldwide priority shipping via FedEx, UPS, and DHL.
• Dispatch Time: Guaranteed shipment within 24-48 hours of order verification.
• Warranty Policy: Includes a comprehensive 12-month technical warranty against defects.
• Package Contents: One 330780-51-05 sensor with mounting hardware.

Professional FAQ & Selection Guide

• Does the -51 suffix imply that a 5-meter probe must be used directly?
• No, the 5.0m system length refers to the total combined length of the probe and extension cable for calibration.


• What is the primary advantage of the SpringLoc terminals?
• They require no special installation tools and facilitate faster, highly robust field wiring connections.


• Can I use this sensor in high-humidity environments?
• Yes, it is tested to IEC 68-2-3 and rated for 100% condensing humidity when connectors are protected.


• Selection Guide: Why choose the 11mm sensor over the 8mm version?
• The 330780-51-05 (11mm) provides a significantly larger linear range for greater shaft movement.


• Experience Tip: How do I verify if the sensor oscillator is functioning?
• Measure the DC voltage between the "Out" and "Com" terminals; if it is stuck at supply voltage, the sensor is likely failed.

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