Product Overview

The Bently Nevada 88984-01 functions as a high-precision Proximitor Sensor within the Bently Nevada Proximity Transducer System. This module converts the raw impedance changes from an eddy current proximity probe into a linear voltage signal. It provides the essential interface for monitoring both static parameters (axial position) and dynamic parameters (radial vibration) on rotating machinery. We supply this unit as 100% Brand New and Original in Factory Packing, ensuring your 3300 or 3500 monitoring racks receive accurate, conditioned data for critical machinery protection.

Technical Specifications

Engineering Advantages

• High-Accuracy Displacement Tracking: The 88984-01 utilizes advanced eddy current technology to achieve non-contact measurement. This eliminates mechanical friction and enables the sensor to detect sub-micron shaft movements at high rotational speeds.

• Stable DC Performance: Unlike velocity or acceleration sensors, this Proximitor maintains accuracy down to 0 Hz. This allows it to monitor "Slow Roll" data and static axial thrust position, which are vital for identifying thermal expansion and rotor-to-stator clearances.

• Superior Noise Immunity: Bently Nevada engineers this module with robust signal conditioning circuitry to reject electromagnetic interference (EMI). This ensures reliable vibration data even when installed near high-power motors or large variable speed drives.

• Wide Thermal Range Compatibility: The module operates consistently in temperatures ranging from –35°C to +100°C. This industrial durability allows for installation in unprotected field housings near steam turbines and hot process machinery.

• Flexible Installation Geometry: The compact 88984-01 module supports multiple cable length configurations (up to 9 meters total). This flexibility permits the mounting of the Proximitor in accessible junction boxes while the probe remains deep within the machine housing.

FAQs

• Is the 88984-01 compatible with the 3500 series monitoring rack?

  Yes. The 88984-01 outputs a standard conditioned voltage signal that integrates seamlessly with the 3500/40, 3500/42, and other vibration monitor modules within the 3500 system.

• Does this part number include the proximity probe or extension cable?

  No. The 88984-01 is the Proximitor Sensor module only. You must order the proximity probe (e.g., 3300 XL 8mm) and the extension cable separately to complete the transducer loop.

• How do I verify the scale factor for my installation?

  The 88984-01 typically provides a scale factor of –200 mV/mil. To maintain this accuracy, you must ensure the total length of the probe and extension cable matches the specific calibration (usually 5m or 9m) marked on the Proximitor label.

• What is the condition of the unit upon delivery?

  We guarantee that every 88984-01 we ship is Brand New and Original. The unit arrives in its original factory-sealed anti-static packaging, ensuring zero-hour reliability for your machinery protection system.