Bently Nevada 330101-00-36-10-01-00 Retrofit-Ready Proximity Probe for 3300 XL Control Systems
The Bently Nevada 330101-00-36-10-01-00 is an 8mm eddy-current proximity probe engineered for seamless compatibility with the Bently Nevada 3300 XL continuous vibration monitoring platform. As legacy rotating machinery protection systems approach end-of-life or face discontinued spare-parts availability, this probe serves as a verified drop-in replacement and upgrade path for facilities operating turbines, compressors, pumps, and gearboxes under continuous condition monitoring. Whether you are executing a planned outage retrofit, responding to an unplanned probe failure, or modernizing an aging control cabinet, the 330101-00-36-10-01-00 delivers the dimensional accuracy, gap voltage linearity, and signal integrity required by the 3300 XL monitor rack without reprogramming the host system.
This probe is part of the broader Bently Nevada 3300 XL Series ecosystem, which includes the 3300 XL 8mm Proximitor Sensor (typically the 330180 series), the 3300 XL 11mm Proximity Probe system, and the 3500/42M proximity I/O module used in the 3500 Series rack when customers are migrating from standalone 3300 XL monitors to a fully integrated 3500 machinery protection system. Understanding the interplay between the probe, the extension cable (such as the 330130-080-00-00 8-metre armoured extension cable), and the Proximitor sensor is critical before any field replacement is attempted.
Upgrade Compatibility Table
| Parameter | 330101-00-36-10-01-00 Specification | Retrofit / Replacement Notes |
|---|---|---|
| Probe Diameter | 8 mm | Direct fit for all 3300 XL 8mm probe holders; no bracket modification required |
| Cable Length | 1.0 m (integral cable) | Pair with 330130 series extension cable to reach Proximitor; verify total system length matches calibrated range |
| Thread | M10 × 1.0 | Compatible with standard 3300 XL probe holders; confirm thread engagement depth before torquing |
| Gap Voltage Range | −10 VDC to −18 VDC (linear range) | Set initial gap to −10.0 VDC (1.0 mm) per 3300 XL commissioning procedure; verify with oscilloscope or Proximitor front-panel meter |
| Target Material Compatibility | AISI 4140 / 4340 steel (standard) | Confirm shaft material; stainless or non-ferrous targets require recalibration or alternative probe selection |
| Communication / Signal | Analogue voltage (passive probe) | No protocol migration required; signal feeds directly into 3300 XL Proximitor or 3500/42M I/O card |
| Installation Interface | Integral coaxial connector (TNC) | Inspect mating connector on extension cable for corrosion or deformation before reconnection |
| Replacement Scope | Direct OEM-equivalent replacement | Replaces discontinued or damaged 330101-00-36-10-01-00 units without monitor reconfiguration |
| Commissioning Check | Gap voltage, sensitivity, runout | Perform slow-roll runout check and compare against baseline; document in DCS historian or 3500 System Manager software |
| Warranty | 12-Month Warranty | Covers manufacturing defects; includes pre-shipment functional test report on request |
Retrofit Planning for Existing Automation Systems
A successful retrofit of the 330101-00-36-10-01-00 into an operating plant begins well before the maintenance window opens. Engineers should first audit the existing probe system documentation to confirm the installed Proximitor model — typically a 330180-51-00 or 330180-91-00 8mm Proximitor Sensor — and verify that the current extension cable length and part number are recorded. The 330130-080-00-00 8-metre armoured extension cable is the most common pairing in turbine bearing housings, but installations near compressor trains may use the 5-metre or 2-metre variants. Mismatching probe and extension cable lengths against the Proximitor’s calibrated range is one of the most frequent commissioning errors during unplanned replacements.
For facilities running the Bently Nevada 3500 Series rack alongside legacy 3300 XL monitors, the probe signal is typically routed through a 3500/42M proximity transducer I/O module. Before the outage, confirm the channel configuration in 3500 System Manager software: check the transducer type, OK limit thresholds, and alert/danger setpoints. If the plant is simultaneously upgrading from a 3300 XL standalone monitor to a full 3500 rack, the 3500/20 rack power supply module and the 3500/15 or 3500/22M communication gateway should be staged and tested on the bench before installation. The Bently Nevada TK-3 calibration kit or equivalent gap-setting tool should be on hand to set the probe gap to the correct voltage before the machine is returned to service.
Terminal wiring at the Proximitor junction box must be inspected for moisture ingress, especially in outdoor or wash-down environments. The coaxial cable shield continuity should be verified with a multimeter before the new probe is connected. If the plant uses a DCS historian such as OSIsoft PI or Honeywell PHD, confirm that the vibration tag associated with this probe channel is placed in manual substitution mode during the swap to prevent false alerts from propagating to the control room. Where the control system integrates with a Modbus RTU or Modbus TCP gateway for vibration data export, the gateway mapping table should be reviewed to ensure the channel address remains unchanged after the probe replacement.
For plants executing a broader I/O expansion — for example, adding radial vibration monitoring to previously unmonitored bearing positions — the 3500/42M I/O card supports up to four proximity channels per card. Additional probe sets, each consisting of a 330101 series probe, a matching extension cable, and a dedicated Proximitor, can be added to vacant card slots without interrupting existing monitored channels. The 3500/01 rack backplane supports hot-insertion of I/O cards in most configurations, but this should be confirmed against the specific rack firmware revision before attempting live insertion.
Downtime Control During System Migration
Minimising unplanned downtime during a proximity probe replacement requires a structured pre-outage checklist and a staged commissioning sequence. The recommended approach is to prepare the replacement 330101-00-36-10-01-00 probe assembly — including the matched extension cable and a verified Proximitor — as a pre-tested, pre-gapped sub-assembly before the machine is shut down. Gap the probe to the target shaft using a non-rotating setup jig or a calibrated gap block, and record the static gap voltage. This eliminates the need for iterative gap adjustment during the live outage window, which is the single largest source of extended downtime in probe replacement jobs.
Once the machine is safely isolated and locked out, the existing probe can be removed and the pre-gapped replacement installed in under 15 minutes for accessible bearing housings. The Proximitor output should be verified at the monitor rack — either at the 3300 XL front-panel meter or via the 3500 System Manager software — before the machine is released for restart. If the plant’s safety instrumented system (SIS) uses the vibration OK relay output from the 3300 XL or 3500 rack as a permissive for startup, confirm that the OK relay is energised and the channel is in a healthy state before issuing the start command. Retaining the original program logic, HMI faceplate tag assignments, and DCS alarm priorities throughout the probe swap ensures that the control room operator’s interface remains unchanged and that no retraining is required after the maintenance event.
For multi-machine outages where several probe channels are being replaced simultaneously, a channel-by-channel commissioning log — recording probe serial number, gap voltage, slow-roll runout, and Proximitor output — provides the documentary evidence required for post-outage quality review and supports the 12-month warranty claim process if a probe defect is identified after return to service.
Retrofit Support FAQ
Q1: Is the 330101-00-36-10-01-00 a direct replacement for the original Bently Nevada part, or does it require recalibration of the 3300 XL monitor?
A: This probe is an OEM-equivalent replacement. When paired with the correct extension cable and Proximitor, the 3300 XL monitor does not require reconfiguration. The sensitivity (200 mV/mil or 7.87 V/mm) and gap voltage range are identical to the original specification. A gap voltage verification at commissioning is recommended but no software changes are needed.
Q2: What wiring checks should be performed before installing the replacement probe?
A: Inspect the TNC connector on the extension cable for corrosion, bent centre pins, or cracked dielectric. Verify coaxial shield continuity from the probe tip to the Proximitor input. Check the junction box terminal block for moisture or oxidation. Confirm the Proximitor supply voltage (typically −24 VDC) is within specification before connecting the new probe.
Q3: Can this probe be used in a 3500 Series rack system as well as the 3300 XL?
A: Yes. The 330101-00-36-10-01-00 is compatible with the 3500/42M proximity transducer I/O module. The channel must be configured in 3500 System Manager for the 8mm probe type and the correct extension cable length. No hardware modification is required.
Q4: What does the 12-month warranty cover, and is a pre-shipment test report available?
A: The 12-month warranty covers manufacturing defects in materials and workmanship from the date of shipment. Each unit undergoes functional testing prior to dispatch. A pre-shipment test report documenting gap voltage linearity and sensitivity can be provided on request. Warranty claims require the original order reference and a description of the observed fault.
© 2026 SMARTNEXMSK. All rights reserved.
Original Source: https://smartnexmsk.com
Contact: sales@smartnexmsk.com | +86 18259474341
