Bently Nevada 330780-50-05 3300 XL 11 mm Proximity Transducer System

Bently Nevada 330780-50-05 3300 XL 11 mm Proximity Transducer System: Precision Machinery Protection for Critical Assets

Product Overview

The Bently Nevada 330780-50-05 is a high-performance 3300 XL 11 mm Proximitor® Sensor, serving as the signal conditioning cornerstone of the 3300 XL 11 mm proximity transducer system . Engineered for non-contact measurement of vibration, displacement, and position in critical rotating machinery, this precision sensor converts signals from 11 mm eddy current probes into linear voltage outputs proportional to target distance, enabling real-time machinery health monitoring in industrial environments worldwide .

This specific configuration features a 5.0-meter (16.4 feet) system length with panel mount installation and carries multiple agency approvals (denoted by the "-05" suffix), including CSA, ATEX, and IECEx certifications for hazardous area installations .

Key Features and Benefits

✅ Extended Linear Range for Demanding Applications

The 11 mm probe design provides a 2.54 mm (100 mils) linear range , significantly larger than standard 8 mm systems. This extended range makes it ideal for applications requiring larger measurement spans, such as axial thrust position monitoring, steam turbine differential expansion measurements, and reciprocating compressor rod position monitoring .

✅ High-Precision Measurement Capability

Delivers 3.94 V/mm (100 mV/mil) sensitivity  with exceptional accuracy for detecting minute changes in shaft position and vibration. The frequency response range of 0 to 8 kHz supports both dynamic vibration and static displacement measurements simultaneously .

✅ Hazardous Area Certifications

With CSA, ATEX, and IECEx approvals (the "-05" option), this sensor is certified for installation in explosive atmospheres, making it ideal for oil and gas, chemical processing, and offshore applications where safety compliance is mandatory .

✅ API 670 Compliance

Fully compliant with the American Petroleum Institute's API 670 Standard for mechanical configuration, linear range, accuracy, and temperature stability, ensuring reliability in critical turbomachinery applications .

✅ Enhanced EMI/RFI Immunity

Advanced electromagnetic interference immunity satisfies CE mark approvals without requiring special shielded conduit or metallic housings. This RF interference immunity protects the sensor system from adverse effects from nearby high-frequency radio signals, reducing installation complexity and cost .

✅ Complete Component Interchangeability

Supports 100% interchangeability with 3300 XL 11 mm probes and extension cables. Any component can be replaced without bench calibration or system matching, reducing downtime and spare parts inventory .

✅ Robust Environmental Protection

Features IP67-rated dust-tight and waterproof construction when connectors are properly protected . The sensor operates across an extended temperature range of -52°C to +100°C (-62°F to +212°F) and can withstand 100% condensing humidity conditions .

✅ SpringLoc Terminals for Easy Installation

Features SpringLoc terminal strips that require no special installation tools and provide faster, more robust field wiring connections by eliminating screw-type clamping mechanisms that can loosen over time .

Technical Specifications

Parameter Specification

Model Number 330780-50-05 

Product Type 3300 XL 11 mm Proximitor® Sensor 

Manufacturer Bently Nevada (a Baker Hughes business) 

System Length 5.0 meters (16.4 feet) 

Mounting Configuration Panel mount 

Agency Approvals CSA, ATEX, IECEx (multiple approvals) 

Country of Origin USA 

Weight 246 grams (8.67 ounces) to 255 grams 

Housing Material A308 aluminum / durable construction 

Connector Material Gold-plated brass or gold-plated beryllium copper 

Tensile Strength 330 N (75 lbs) at probe case to probe lead 

Electrical Specifications

Parameter Specification

Supply Voltage -17.5 Vdc to -26 Vdc (without barriers) 

Power Consumption 12 mA maximum 

Output Signal Linear voltage proportional to target gap 

Sensitivity 3.94 V/mm (100 mV/mil) ±10% 

Linear Range 2.54 mm (100 mils) typical 

From 0.5 mm to 4.5 mm (20 to 180 mils) 

Frequency Response 0 to 8 kHz 

Accuracy (Linearity) ±5% 

Mechanical & Environmental Specifications

Parameter Specification

Operating Temperature (Proximitor) -52°C to +100°C (-62°F to +212°F) 

Operating Temperature (Probe) -35°C to +177°C (-31°F to +351°F) 

Storage Temperature -52°C to +105°C (-62°F to +221°F) 

Protection Class IP67 (when connectors are protected) 

Humidity Range 100% condensing (tested to IEC 68-2-3 damp heat standards) 

Recommended Target Size Minimum 30.5 mm (1.2 in) diameter flat target 

Dimensions (approx.) 81.3 mm × 61 mm × 63.5 mm (3.2" × 2.4" × 2.5") 

Compliance API 670 (4th Edition), CE marked 

System Architecture and Compatibility

Complete Transducer System Components

The 3300 XL 11 mm Proximity Transducer System consists of three integral components :

3300 XL 11 mm Probe (various models including 330701, 330703, 330704, 330705, 330706 series)

3300 XL 11 mm Extension Cable (330730 series)

3300 XL 11 mm Proximitor® Sensor (330780-50-05)

Critical Requirement: The electrical length of the probe plus the extension cable must equal the electrical length of the Proximitor sensor (5.0 meters for this model) .

Probe Compatibility Options

The 3300 XL 11 mm probe is available in various configurations :

Standard thread options: ½-20 UNF, 5/8-18 UNF, M14 x 1.5, M16 x 1.5

Armored and unarmored versions for different environmental requirements

Reverse mount probes: 3/8-24 UNF or M10 x 1 thread options

Extension Cable Options

330730-040-00-00: 4.0 meter extension cable

330730-040-01-00: 4.0 meter with FluidLoc™ (oil-blocking)

330730-080-00-00: 8.0 meter extension cable

330730-080-01-00: 8.0 meter with FluidLoc™