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330850-91-CN

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The 330850-91-CN 3300 XL 25 mm proximity sensor is designed to solve the problem of reliable monitoring of mechanical equipment in environments with high electromagnetic interference.
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Technical specifications for 330850-91-CN

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330850-91-CN
  • Product Family:
    3300 XL 25mm Proximity Transducer System
  • Total Length:
    9.0 metres (29.5 feet) system length
  • Mounting Option:
    DIN mount
  • Agency Approval:
    Multiple Approvals
  • Operating Temperature:
    0°C to +45°C (32°F to 113°F)
  • Power Supply:
    -24 Vdc
  • Load:
    10 kΩ
  • Weight:
    0.2 kg
  • Estimated shipping dimensions:
    8.8x3.5x7cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Cases Monitoring & Control Diagnostics & Protection

Features:

  • Interface Between the Proximitor Sensor and Monitoring System Backplane
  • Combines Capability of Proximity Signal Conditioning with Robust Field Wiring Support
  • Operates in Conjunction with the 3300 XL Series and Standard Machinery Protection Monitors
The 330850-91-CN operates as the 3300 XL 25 mm Proximitor Sensor in industrial monitoring applications, providing reliable proximity signal conditioning for vibration and position measurement systems. It continuously processes eddy current signals from the probe and extension cable, converting target displacement into proportional voltage output for machinery condition monitoring. Seamless signal integrity is standard with the 330850-91-CN, however its improved RFI/EMI immunity allows operation without special mounting considerations even in high-electromagnetic-interference environments. The 330850-91-CN has made improvements in several areas over previous Proximitor Sensor designs in addition to incorporating universal target material calibration capability within the 3300 XL system.

The 330850-91-CN provides essential signal conditioning functions common to the entire proximity measurement path, and is a critical component of the monitoring system, directly affecting the proper, normal operation of the overall machinery protection system. One 330850-91-CN Proximitor Sensor is required per measurement channel depending on the desired monitoring point coverage. The 330850-91-CN occupies minimal installation space with its thin design and can be mounted in either high-density DIN-rail installations or traditional panel mount configurations.

For Extended System Length applications, the 330850-91-CN provides a total system length of 9.0 metres (29.5 feet), accommodating installations where the monitoring equipment must be positioned at significant distance from the measurement point. In addition to standard signal conditioning operation, the 330850-91-CN configuration also facilitates faster field wiring connections. The 330850-91-CN sensor system executes reliable connections using the SpringLoc terminal strips specified in the sensor design. Using this method, the terminal system requires no special installation tools and facilitates highly robust field wiring connections. If the system requires calibration to alternative target materials, it is available upon request while maintaining AISI 4140 steel calibration as standard.

The 330850-91-CN Bently Nevada 3300 XL 25 mm Proximitor Sensor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330850-91-CN 3300 XL 25 mm Proximitor Sensor Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 330850-91-CN 3300 XL 25 mm Proximitor Sensor Specs

General

  • Manufacturer Bently Nevada
  • Model 330850-91-CN
  • Condition New Original ready stock
  • Product Family 330850-91-05,330850-91-00,330850-90-CN
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Steam Turbines: It is primarily used in Turbine Supervisory Instrumentation (TSI) systems for mid-size to large steam turbine generators.
  • Thermal Power Plants: Monitoring large rotating machinery critical to power generation.
  • Petrochemical Facilities: Used in pump arrays and other critical rotating assets.
  • Maritime Engineering: Monitoring regional maritime engines.
  • Differential Expansion (DE): Its most vital role is measuring the difference in growth rates between the turbine rotor and the machine stator (casing).
  • Extended Linear Range: Provides a wide measurement range of 12.7 mm (500 mils), which is essential for tracking large axial movements in steam turbines.
  • System Integration: Compatible with 3500 and 3300 Monitoring Systems, allowing for real-time tracking of machine health.
  • Machine Protection: Real-time monitoring allows the system to trigger alarms or automatic shutdowns if differential expansion limits are exceeded, preventing catastrophic rotor-to-stator contact.
  • Fault Identification: High-quality proximity measurements help identify faults such as shaft cracks, bearing failures, and rotor-to-stator rubs.
  • Mode Shape Analysis: When placed at turbine mid-span locations, these sensors are used to analyze lateral mode shapes, which is valuable for balancing rotating machinery and troubleshooting new designs.
  • Harsh Environment Survivability: Designed for maximum survivability, the 25 mm probe can operate continually in temperatures up to 200°C (392°F) and withstand intermittent spikes up to 250°C (482°F).
Description
The 330850-91-CN is a 3300 XL 25 mm Proximitor Sensor designed for industrial vibration monitoring and machinery protection applications. This proximity sensor system features a total length of 9.0 metres (29.5 feet), providing extended reach for installations where the monitoring equipment must be positioned at a distance from the measurement point. The 330850-91-CN utilizes DIN mount configuration, enabling secure and standardized installation within industrial control panels and rack systems. This 330850-91-CN sensor carries multiple agency approvals, ensuring compliance with international safety and performance standards for use in critical industrial environments.

This 330850-91-CN proximity sensor is specifically engineered for monitoring rotating machinery health in heavy industrial settings. The 330850-91-CN excels in applications such as large steam and gas turbines, compressors, pumps, and motors where precise shaft vibration and position measurement is essential for predictive maintenance. The 330850-91-CN addresses the challenge of reliable machinery monitoring in high-electromagnetic-interference environments, solving problems associated with signal degradation from nearby radio frequency equipment. By incorporating improved RFI/EMI immunity, the 330850-91-CN eliminates the need for special shielding or mounting considerations typically required to achieve European CE mark compliance, simplifying installation while maintaining measurement integrity.

The 330850-91-CN maintains the advanced features of the 3300 XL Proximitor Sensor series, including a thin-profile design that supports high-density DIN-rail installations as well as traditional panel mount configurations. The 330850-91-CN is equipped with SpringLoc terminal strips that require no specialized installation tools, facilitating faster field wiring connections and enhancing connection robustness in industrial environments. The 330850-91-CN is supplied from the factory calibrated to AISI 4140 steel as standard, with calibration to alternative target materials available upon request to accommodate specific application requirements. This 330850-91-CN sensor system delivers consistent, accurate proximity measurements essential for protecting critical rotating assets and preventing catastrophic machinery failures.
Alternative Names
330850-91-05 330850-91-00 330850-90-CN 330850-51-CN 330850-50-CN
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the 330850-91-CN?
The 330850-91-CN is a 3300 XL 25 mm Proximitor Sensor designed for industrial vibration monitoring and machinery protection, delivering accurate shaft position and vibration measurements.
What mounting method does this sensor use?
It uses a DIN mount configuration, enabling secure and standardized installation in control panels and rack systems.
How does the sensor perform in high-interference environments?
The sensor features enhanced RFI/EMI immunity, ensuring stable signal performance even in environments with strong electromagnetic interference, without requiring special shielding.
What installation advantages does this model offer?
It includes a thin-profile design for high-density installations and SpringLoc terminal strips that allow quick, tool-free wiring connections.

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