Bently Nevada 330104-00-24-05-02-00 Proximity Probe for 3300 Series

Bently Nevada 330104-00-24-05-02-00 Proximity Probe for 3300 Series

In rotating machinery protection and condition monitoring, the integrity of the measurement chain begins at the sensor level. The Bently Nevada 330104-00-24-05-02-00 is a 24-inch (610 mm) extension cable proximity probe engineered for seamless integration within the 3300 Series vibration monitoring architecture. Designed to operate as a precision front-end component, this probe delivers consistent, low-noise radial vibration signals that feed directly into the broader machinery protection system — enabling real-time shaft displacement measurement, early fault detection, and continuous condition monitoring across critical rotating assets.

Unlike generic proximity sensors, the 330104-00-24-05-02-00 is factory-matched to the Bently Nevada signal conditioning ecosystem. Its 5 mm tip diameter and 8 mm sensing range are optimized for the eddy-current measurement principle, providing linear output across the full operating gap. When paired with a compatible 3300 XL 8mm Proximitor® sensor such as the 330180-91-00, the system achieves the calibrated sensitivity of 200 mV/mil (7.87 V/mm), ensuring that every micron of shaft movement is accurately translated into a voltage signal that the monitoring rack can interpret without ambiguity.

Product Specification Table

System Compatibility Notes

The 330104-00-24-05-02-00 does not operate in isolation — it is the first link in a tightly coordinated machinery protection chain. In a typical 3300 Series installation, the probe is mounted radially against the shaft journal and connected via an extension cable such as the 330130-045-00-00 to the Proximitor® sensor module. The Proximitor® — commonly the 330180-91-00 or 330180-51-00 — conditions the raw eddy-current signal and outputs a calibrated DC voltage to the 3300/16 monitor rack or the 3500/40M proximitor monitor, depending on system configuration.

Within the 3500 Series rack architecture, the conditioned signal is processed by the 3500/40M proximitor monitor card, which applies alert and danger setpoints for radial vibration, eccentricity, and gap voltage. The rack communicates machinery health data upstream via Modbus RTU or Ethernet/IP to a DCS or SCADA platform — often a Honeywell Experion PKS, Emerson DeltaV, or ABB 800xA system — where operators monitor real-time vibration trends alongside process variables such as bearing temperature, lube oil pressure, and rotor speed.

For turbine train applications, the 330104-00-24-05-02-00 is typically deployed in sets of two per bearing journal, providing X-Y radial vibration measurement. These probes work in concert with a 330500-02-00 thrust position probe and a 330850-50-00 speed sensor to give the 3500 rack a complete picture of rotor dynamics. The rack’s relay output module — such as the 3500/32 relay module — then drives trip logic to the turbine control system or emergency shutdown device, closing the loop between measurement and machine protection.

Power for the Proximitor® sensors is supplied by the 3500 rack’s internal power supply, often backed by a redundant 3500/15 power supply module to ensure uninterrupted monitoring even during utility power disturbances. In facilities where the 3300 Series rack is used as a standalone monitor, a dedicated 24 VDC industrial power supply with sufficient current capacity is required to maintain stable Proximitor® bias voltage and prevent measurement drift.

On the human-machine interface layer, vibration data from the 3300/3500 system is visualized on operator workstations running System 1 Evolution software, Bently Nevada’s condition monitoring platform. Maintenance engineers use System 1 to review historical vibration waveforms, perform spectrum analysis, and configure alert thresholds — all of which depend on the accuracy and reliability of the front-end probe assembly that begins with the 330104-00-24-05-02-00.

Industrial Application Notes

The 330104-00-24-05-02-00 proximity probe finds application across a wide range of heavy industrial sectors where rotating machinery reliability is mission-critical.

In power generation, steam turbine generators at coal, gas, and nuclear plants rely on 3300 Series proximity probes to monitor shaft vibration continuously. Any deviation from baseline — caused by rotor imbalance, misalignment, or bearing wear — triggers an alert in the 3500 rack before it escalates to a trip event, protecting multi-million-dollar assets and preventing unplanned outages.

In petrochemical and refining facilities, centrifugal compressors and process pumps in hazardous areas require ATEX/IECEx-rated monitoring solutions. The 330104-00-24-05-02-00, when installed with appropriate barriers and certified Proximitor® housings, meets the requirements for Zone 1 and Zone 2 classified locations, making it suitable for ethylene crackers, LNG compressor trains, and crude oil transfer pumps.

In water and wastewater treatment, large vertical turbine pumps and blower units benefit from continuous vibration monitoring to extend maintenance intervals and reduce emergency repair costs. The 3300 Series system provides the reliability and long-term stability needed for 24/7 unattended operation in remote pump stations.

In mining and minerals processing, ball mills, SAG mills, and large fan drives are subject to severe vibration environments. The rugged construction of the 330104-00-24-05-02-00 — with its stainless steel housing and high-temperature cable — ensures reliable signal output even in dusty, high-vibration installations where lesser sensors would fail prematurely.

In pulp, paper, and packaging production lines, the probe integrates with the plant DCS to provide vibration data alongside process control signals, enabling maintenance teams to correlate machine condition with production quality and schedule predictive maintenance during planned downtime windows rather than reacting to unexpected failures.

Product Compatibility FAQ

Q1: Is the 330104-00-24-05-02-00 compatible with both the 3300 Series and 3500 Series monitor racks?
Yes. The 330104-00-24-05-02-00 is a standard Bently Nevada 8 mm proximity probe that is fully compatible with both the 3300 Series and 3500 Series monitor racks when used with the appropriate Proximitor® sensor. The key requirement is that the probe, extension cable, and Proximitor® are all matched to the same tip size and sensitivity specification (200 mV/mil for 8 mm systems). Always verify the complete probe-cable-Proximitor® system part numbers against the rack’s channel configuration before installation.

Q2: What installation and commissioning steps are required to ensure accurate vibration measurement?
Proper installation requires setting the probe gap voltage within the linear range specified by the Proximitor® datasheet — typically between -10 VDC and -18 VDC for an 8 mm system, with the optimal gap at -12 VDC. The probe must be mounted perpendicular to the shaft surface with the correct target material (AISI 4140 or equivalent). After mechanical installation, the system should be calibrated using a calibration fixture or verified against a known reference standard. Alert and danger setpoints in the 3500 rack should be configured according to API 670 or the OEM’s machinery protection specification.

Q3: What does the warranty terms confirmed during quotation cover, and how is long-term spare parts availability managed?
Every 330104-00-24-05-02-00 unit supplied by ZYPLC is covered by a warranty terms confirmed during quotation against manufacturing defects and functional failure under normal operating conditions. Each unit undergoes functional testing and gap-voltage verification before shipment. For long-term maintenance planning, ZYPLC maintains inventory of 3300 Series probe assemblies, extension cables, and Proximitor® sensors to support scheduled overhauls and emergency replacements. Contact our team at plc.sales@zyplc.com or +86 19859288691 to discuss stocking agreements or multi-unit procurement for your facility’s spare parts program.