Description
Technical Specifications
- Product Model: 81004-286-52-R
- Brand: Bently Nevada
- Warranty: One Year
- Input Voltage: Powered by matched 3300 series Proximitor Sensor (-24 VDC supply)
- Operating Temperature: -40°C ~ +125°C
- Storage Temperature: -55°C ~ +150°C
- Response Time: <1 μs signal propagation delay
- Protection Class: IP67 hermetically sealed probe assembly
- Accuracy Class: ±1.25% full-scale linearity
- Output Frequency: DC ~ 10 kHz
- Rated Measurement Range: 0 mm – 2.0 mm linear gap range
- Communication Interface: Coaxial cable to Proximitor oscillator/demodulator
- Supported Protocols: Analog eddy current signal for Bently Nevada machinery monitoring systems
- Overload Capacity: Tolerates incidental shaft contact without permanent coil failure
- Dimensions: Standard 8 mm probe diameter, integral calibrated cable assembly
Product Overview
The Bently Nevada 81004-286-52-R is an 8 mm 3300 XL eddy current proximity probe built for non-contact rotating machinery condition monitoring. This sensor works in tandem with matching extension cables and Proximitor modules to measure radial shaft vibration, axial thrust position and shaft eccentricity. It eliminates measurement drift caused by contacting sensors and delivers stable analog gap signals in oily, humid and thermally variable industrial environments. Rotating equipment specialists, power plant maintenance teams and automation integrators implement this probe to build continuous protection systems for critical rotating assets. The stainless steel sealed construction prevents contamination ingress, and factory-calibrated wiring maintains consistent measurement performance over long service intervals.
Application Scenarios
- Gas & Steam Turbine Protection Systems: Mounted on turbine bearing housings to track shaft radial vibration and axial thrust. Continuous gap measurements support automatic trip logic to prevent catastrophic rotor damage during imbalance or misalignment events.
- Oil & Gas Centrifugal Compressor Surveillance: Deployed on process compression trains. Non-contact measurement avoids mechanical wear, and broad temperature tolerance supports installation close to hot operating equipment.
- Industrial Generator Shaft Position Monitoring: Captures dynamic shaft movement inside generator enclosures. Readings feed DCS and online monitoring platforms for predictive maintenance trend analysis.
- Large Process Pump and Fan Retrofit Projects: Used as a spare replacement sensor for legacy Bently Nevada monitoring racks, matching existing wiring and mounting dimensions to reduce overhaul downtime.
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