Bently Nevada 330103-00-02-10-02-00 Proximity Probe for 3300 Series
The Bently Nevada 330103-00-02-10-02-00 is a precision eddy-current proximity probe engineered as a core sensing element within the Bently Nevada 3300 Series vibration monitoring architecture. Rather than functioning as a standalone transducer, this probe is designed to operate as an integrated node within a layered industrial control system — connecting the mechanical domain directly to the signal conditioning, processing, and supervisory layers of a complete rotating machinery protection platform. Its role spans from raw displacement signal acquisition at the I/O layer through to alarm management at the control and HMI layers, making it a foundational component for any engineer designing or maintaining a continuous machinery health monitoring system.
In a fully realized 3300 Series architecture, the 330103-00-02-10-02-00 probe interfaces with the Bently Nevada 3300 XL 8mm Extension Cable and the 3300 XL Proximitor Sensor (driver), which conditions the raw eddy-current signal into a calibrated DC voltage proportional to the gap between the probe tip and the rotating shaft. This conditioned signal is then routed to the 3500/40M Proximitor/Seismic Monitor or the 3500/42M Proximitor/Seismic Monitor housed within the 3500 Series rack — a modular, 19-inch rack-mount system that serves as the central processing and relay output hub for the entire protection architecture. The rack itself is powered by the 3500/15 Power Supply Module, which provides redundant DC power distribution across all I/O and processing cards, ensuring uninterrupted operation even during single-point power failures.
At the network and communication layer, the 3500 rack integrates with plant-level DCS or SCADA systems via the 3500/92 Communication Gateway Module, supporting Modbus TCP, OPC-DA, and proprietary Bently Nevada protocols. This enables real-time vibration data — including 1X, 2X, and direct gap measurements derived from the 330103-00-02-10-02-00 probe — to be transmitted upstream to historian servers, operator workstations, and condition monitoring platforms such as System 1 Condition Monitoring Software. At the HMI layer, operators can visualize shaft centerline plots, orbit diagrams, and trend data in real time, enabling predictive maintenance decisions before machinery damage occurs.
The probe’s 10 mm tip diameter and 2 mm nominal gap range make it compatible with standard shaft diameters encountered in steam turbines, gas compressors, centrifugal pumps, and large electric motors. Its 330103 series designation confirms compatibility with the full range of 3300 XL Proximitor drivers, and its cable configuration (02 = 2-meter integral cable, 10 = 10-meter extension) provides the installation flexibility required in large turbine pedestals or compressor trains where the Proximitor must be mounted remotely from the probe tip. For redundant protection architectures, two probes are typically installed 90° apart (X and Y planes) on each measurement plane, with each channel independently monitored by a dedicated monitor card — a configuration fully supported by the 3500 Series rack’s channel-per-card design.
From a system engineering perspective, the 330103-00-02-10-02-00 contributes directly to the reliability and maintainability of the overall protection system. Its field-replaceable design allows maintenance teams to swap probes during planned outages without disturbing the extension cable or Proximitor mounting, reducing mean time to repair (MTTR) and minimizing the risk of calibration errors introduced by disturbing the entire transducer chain. When paired with the 3500/22M Transient Data Interface, the system can also capture high-resolution startup and shutdown transient data, providing engineering teams with the diagnostic depth needed to identify resonance issues, misalignment, or bearing wear trends over the full operating speed range.
Inventory availability for the 330103-00-02-10-02-00 is maintained to support both planned capital projects and emergency replacement scenarios. All units supplied by ZYPLC are covered by a warranty terms confirmed during quotation and undergo functional verification prior to dispatch, including gap sensitivity checks and insulation resistance testing. This ensures that every probe delivered is ready for immediate installation and commissioning within an existing 3300 or 3500 Series architecture, without the lead times associated with OEM procurement channels.
Product Specification Table
| Parameter |
Specification |
| System Role |
Eddy-Current Displacement Sensing — I/O Layer |
| Compatible Architecture |
Bently Nevada 3300 Series / 3500 Series Rack |
| Probe Tip Diameter |
10 mm (3300 XL Standard) |
| Nominal Gap Range |
0.25 mm – 2.25 mm (linear range) |
| Integral Cable Length |
2 metres (02 designation) |
| Extension Cable Length |
10 metres (10 designation) |
| Driver Compatibility |
3300 XL Proximitor Sensor (5 m, 9 m, 10 m) |
| Output Signal |
–24 VDC nominal, –200 mV/mil sensitivity |
| Operating Temperature |
–35°C to +121°C (probe body) |
| Target Material |
AISI 4140 steel or equivalent ferromagnetic alloy |
| Communication Integration |
Via 3500/92 Gateway — Modbus TCP, OPC-DA |
| Installation Environment |
Turbine pedestals, compressor trains, motor bearing housings |
| Warranty |
warranty terms confirmed during quotation (ZYPLC) |
System Compatibility Notes
The 330103-00-02-10-02-00 achieves its full protective value only when correctly integrated within a coordinated system architecture. At the sensing layer, the probe pairs with the Bently Nevada 3300 XL Proximitor Sensor to form a complete transducer chain. The conditioned output feeds into the 3500/40M or 3500/42M Monitor Card within the 3500 rack, where alert and danger setpoints are configured per API 670 requirements. Rack power is supplied by the 3500/15 Dual Power Supply, which supports hot-swap replacement without system shutdown — a critical feature for continuous-process industries where unplanned downtime carries significant financial penalties.
For plants requiring integrated vibration and process data correlation, the 3500/92 Communication Gateway bridges the protection system to the plant DCS, enabling the control layer to receive vibration vectors alongside process variables such as bearing temperature (from 3500/60 Temperature Monitor cards) and rotor speed (from 3500/50 Tachometer Monitor cards). This multi-parameter integration allows the control system to implement combined shutdown logic — for example, triggering a turbine trip only when both vibration amplitude and bearing temperature simultaneously exceed defined thresholds, reducing nuisance trips while maintaining protection integrity.
At the HMI and supervisory layer, System 1 Condition Monitoring Software aggregates all channel data from the 3500 rack, presenting operators with real-time orbit plots, Bode diagrams, and shaft centerline trends derived directly from the 330103-00-02-10-02-00 probe signals. This end-to-end data flow — from probe tip to operator display — represents the complete system integration that defines a mature, architecture-aware machinery protection system.
Industrial Application Notes
The 330103-00-02-10-02-00 proximity probe is deployed across a wide range of heavy industrial applications where rotating machinery protection is critical to process continuity and personnel safety. In power generation, the probe monitors shaft radial vibration on steam turbine rotors, providing the primary input to the turbine protection system that initiates emergency shutdown in the event of rotor instability or bearing failure. In oil and gas processing, it is installed on centrifugal compressor trains handling hydrocarbon gases, where API 670-compliant vibration monitoring is a mandatory requirement for safe operation under pressure.
In petrochemical and refinery environments, the probe’s high-temperature rating and robust cable construction allow installation in close proximity to hot process equipment, where ambient temperatures may approach the upper limits of the probe’s rated operating range. In water treatment and pumping stations, the probe monitors large vertical turbine pumps and horizontal split-case pumps, providing early warning of impeller imbalance or bearing wear before catastrophic failure occurs. In mining and minerals processing, the probe is used on large ball mill drives, conveyor head pulleys, and crusher main shafts, where the consequences of undetected vibration anomalies include both equipment damage and extended production outages.
In metallurgical and steel plant applications, the probe monitors rolling mill main drives and continuous caster pinch roll assemblies, where precise shaft position measurement is as important as vibration amplitude monitoring. Across all these applications, the 330103-00-02-10-02-00 delivers consistent, repeatable performance within the 3300/3500 Series architecture, supported by ZYPLC’s warranty terms confirmed during quotation and availability confirmed by RFQ availability for rapid deployment.
Product Compatibility FAQ
Q1: Is the 330103-00-02-10-02-00 directly compatible with the Bently Nevada 3500 Series rack without additional adapters?
Yes. The 330103-00-02-10-02-00 is a 3300 XL Series probe that interfaces with the 3300 XL Proximitor Sensor, whose output is fully compatible with all 3500 Series monitor cards including the 3500/40M and 3500/42M. No signal conditioning adapters are required. The Proximitor output voltage range (–24 VDC nominal) is within the input specification of all standard 3500 monitor cards, and the system can be commissioned using standard Bently Nevada calibration procedures without modification.
Q2: Can this probe be used in a redundant dual-probe configuration for API 670 compliance, and how does the 3500 rack handle dual-channel inputs?
Yes. API 670 requires a minimum of two radial vibration measurement planes per bearing, each with X and Y probes installed 90° apart. The 330103-00-02-10-02-00 is fully suitable for this configuration. Each probe connects to its own dedicated Proximitor and monitor card channel within the 3500 rack. The rack’s channel-per-card architecture ensures that a failure in one monitoring channel does not affect adjacent channels, maintaining protection integrity across the full measurement plane. Voted shutdown logic (e.g., 2-out-of-2 or 2-out-of-3) can be configured within the 3500 rack to minimize nuisance trips while preserving safety response.
Q3: What does the warranty terms confirmed during quotation cover, and what is the process for warranty claims or technical support through ZYPLC?
The warranty terms confirmed during quotation provided by ZYPLC covers manufacturing defects, premature sensitivity drift beyond published specifications, and cable insulation failures under normal operating conditions. It does not cover damage resulting from installation errors, mechanical impact, or operation outside the probe’s rated temperature and gap range. To initiate a warranty claim or request technical support, contact ZYPLC directly at plc.sales@zyplc.com or +86 19859288691. ZYPLC’s technical team can assist with gap calibration verification, Proximitor driver matching, and system integration queries to ensure the replacement probe is commissioned correctly within the existing 3300/3500 Series architecture.
