128987-130-00-00 3300 XL 8mm Proximity Sensor

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	128987-130-00-00
Minimum Order Quantity:	1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 128987-130-00-00 is a high-performance 3300 XL 8mm Proximity Sensor designed by Bently Nevada for the precise monitoring of rotating machinery. As a fundamental component of the 3300 XL eddy current transducer system, this proximity sensor provides a non-contact method for measuring vibration, axial position, and rotational speed. This specific model, 128987-130-00-00, is configured as a 3300 XL 8mm Proximity Sensor with a total length of 6.5 meters (21.3 feet), allowing for direct connection to a Proximitor sensor without the need for additional extension cables in many installation scenarios. This configuration streamlines the signal path and reduces potential points of failure.

The 128987-130-00-00 3300 XL 8mm Proximity Sensor is engineered to deliver an Average Scale Factor (ASF) of 7.87 V/mm (200 mV/mil), enabling high-fidelity data capture of shaft movement. Its rugged construction features a Polyphenylene Sulfide (PPS) probe tip, which provides excellent resistance to the chemical corrosion and moisture found in industrial steam turbines and compressors. This 3300 XL 8mm Proximity Sensor operates on the eddy current principle, generating a linear voltage signal that is directly proportional to the gap between the probe tip and the conductive target surface. With a linear range of 2.0 mm (80 mils), it offers the sensitivity required for critical machinery protection.

Applications

The 128987-130-00-00 is ideally suited for monitoring radial vibration and axial displacement in large-scale centrifugal compressors and steam turbines used in power generation. Given its 6.5-meter total length, this 3300 XL 8mm Proximity Sensor can be routed directly from the internal bearing housing to an external junction box or Proximitor housing, significantly simplifying the wiring architecture. The 2.0 mm linear range ensures that even minute shaft movements are captured, providing essential data for detecting rotor unbalance or bearing wear.

In the oil and gas industry, this sensor is used for thrust position measurement in high-speed pumps and gearboxes. The PPS probe tip and FEP jacketed cable provide the necessary chemical resilience to withstand constant exposure to hot lubricating oils and corrosive process fluids. By providing a stable voltage output with a sensitivity of 200 mV/mil, the 128987-130-00-00 allows for real-time tracking of the rotor's axial position, triggering safety shutdowns if the shaft drifts beyond pre-set limits, thus protecting the machinery from catastrophic failure.

The 128987-130-00-00 also serves as a critical Keyphasor sensor for phase measurement and speed detection. In complex industrial setups, the integrated 6.5-meter cable length reduces signal attenuation and the risk of connector contamination that often occurs at cable-to-cable junctions. Its wide operating temperature range allows it to function reliably in both the frigid conditions of outdoor North American oil fields and the high-heat environments of turbine enclosures, ensuring consistent timing signals for machinery diagnostic systems.

Specifications

Competitive Advantage

Integrated 6.5-Meter Cable for Single-Link Reliability Unlike standard probes that require a separate extension cable to reach the Proximitor, the 128987-130-00-00 features a factory-integrated 6.5-meter (21.3 feet) cable. This "one-piece" design eliminates the intermediate connector junction, which is the most common point for moisture ingress and signal noise in proximity systems. This results in higher signal integrity and reduced installation labor costs.

Superior Thermal and Chemical Resilience Equipped with a Polyphenylene Sulfide (PPS) tip and FEP (Fluorinated Ethylene Propylene) jacketed cabling, this sensor is built for the most aggressive industrial climates. It maintains its calibrated accuracy across a wide temperature spectrum (-45°C to +160°C) and is impervious to most hydrocarbons and synthetic lubricants, outperforming generic sensors that degrade when exposed to high-heat or chemical-rich environments.