Bently Nevada 190501-05-00-CN Velomitor CT Upgrade Solution

Product Overview

Bently Nevada 190501-05-00-CN Velomitor CT: Seamless Replacement & Upgrade Solution

Upgrading or replacing a legacy seismic velocity transducer in a continuous machinery protection system demands zero compromise on signal integrity, wiring compatibility, and installation footprint. The Bently Nevada 190501-05-00-CN Velomitor CT Seismic Velocity Transducer is engineered to deliver a smooth, low-risk transition from discontinued or aging velocity sensors — preserving your existing cable runs, terminal assignments, and System 1 or 3500 Series rack configurations without requiring re-engineering of the monitoring loop.

Whether your plant is retiring an older Velomitor XA, a standard Velomitor PT, or a third-party IEPE-compatible velocity sensor, the 190501-05-00-CN provides a direct mechanical and electrical replacement path. Its integrated circuit piezoelectric (ICP®) output is fully compatible with the Bently Nevada 3500/42M Velocity Monitor and the 3500/40M Proximitor®/Seismic Monitor input cards, meaning no firmware changes, no re-ranging, and no recalibration of the rack-level alarm setpoints are required during the swap-out.

The transducer’s compact stainless-steel housing and standard M8 mounting thread match the original installation envelope, allowing field technicians to complete the replacement during a planned outage window — or in many cases, during a brief opportunistic shutdown — without modifying the existing mounting bracket, conduit entry, or cable gland. The 2-pin MIL-C-5015 style connector mates directly with the existing field wiring harness, eliminating the need for re-termination at the junction box or the 3500 rack I/O module.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful Velomitor CT installation rarely happens in isolation. In most rotating machinery protection upgrades, the 190501-05-00-CN is deployed alongside a broader set of Bently Nevada components that together form a complete, validated monitoring chain. During the migration from a legacy seismic monitoring setup, engineers typically also address the Bently Nevada 3500/42M Velocity Monitor module — verifying that its input channel configuration, full-scale range, and alarm relay assignments remain valid after the transducer swap. Where the existing rack also handles proximity probe signals, the 3500/40M Proximitor®/Seismic Monitor card is reviewed in parallel to confirm that the combined velocity and displacement channels share a consistent timebase and that the System 1 database tag mapping does not require re-engineering.

Cable integrity is a frequent hidden failure point in aging installations. Replacement projects often include a concurrent audit of the Bently Nevada 330130 series armored extension cables, which carry the ICP® signal from the transducer to the rack. Where cable runs exceed 30 metres or pass through high-EMI zones near variable-frequency drives or large motor starters, engineers specify shielded, low-capacitance cable to preserve signal fidelity across the full 2–1,000 Hz bandwidth. At the rack end, the 3500/20 Rack Interface Module (RIM) and its associated 3500/22M Transient Data Interface are checked to ensure that the System 1 historian continues to capture waveform snapshots without interruption during the transducer changeover.

For plants simultaneously upgrading their condition monitoring software, the migration to System 1 Evolution from an older System 1 v5.x or v6.x platform is coordinated with the hardware swap to avoid a double-outage scenario. In turbomachinery applications where the 190501-05-00-CN is mounted on a compressor or steam turbine bearing housing, the upgrade scope frequently extends to the Bently Nevada 3300 XL 8mm Proximity Transducer System on the shaft, ensuring that both radial vibration (displacement) and casing vibration (velocity) channels are refreshed in the same maintenance window. The 3500/15 Power Supply Module is also verified for adequate current headroom when additional ICP® transducers are added to the rack.

Retrofit Guidance FAQ

Q: Will the 190501-05-00-CN work with my existing field wiring without re-termination?
A: Yes. The 2-pin MIL-C-5015 connector is a direct mate to the standard Bently Nevada field wiring harness. No re-termination at the junction box or the 3500 rack terminal block is required, provided the existing cable is in good condition and the shield is properly grounded at the rack end only.

Q: Do I need to recalibrate the 3500/42M monitor after replacing the transducer?
A: In most cases, no. The 190501-05-00-CN shares the same 100 mV/in/s sensitivity as the Velomitor XA and Velomitor PT it replaces. The existing full-scale range, alert, and danger setpoints in the 3500 rack configuration remain valid. A functional verification test (bump test or shaker table check) is recommended but a full recalibration is not mandatory.

Q: Is the mounting thread compatible with my existing bracket?
A: The standard 190501-05-00-CN uses an M8 × 1.25 mounting thread. If your existing bracket uses a 1/4-28 UNF thread (common on older North American installations), a stainless-steel thread adapter is available and should be specified at the time of order.

Q: Can this transducer be used in hazardous area (Ex) installations?
A: The -CN suffix variant is the standard industrial version. For ATEX or IECEx Zone 1/Zone 2 classified areas, please confirm the applicable approval suffix with our technical team before ordering.

Q: How long does commissioning take after installation?
A: For a like-for-like replacement on an existing 3500 rack with no configuration changes, field commissioning typically takes 30–60 minutes per channel, including cable continuity check, bias voltage verification, and a functional vibration response test.

Warranty Assurance

Every Bently Nevada 190501-05-00-CN unit shipped from TOPNLMS carries a 12-month warranty covering manufacturing defects, electrical performance out-of-specification, and mechanical integrity failures under normal operating conditions. Prior to dispatch, each unit undergoes outgoing inspection including bias voltage check, sensitivity verification, and connector integrity test. Units that do not meet Bently Nevada published specifications are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit dispatch within 3 business days of claim confirmation, minimising the risk of extended machinery downtime. Our technical support team is available to assist with installation queries, compatibility confirmation, and commissioning guidance throughout the warranty period. For procurement teams requiring documentation, a test report and certificate of conformance are available upon request at the time of order.

Stock is maintained in Xiamen, China, with express international shipping available to most destinations. Lead time for in-stock units is typically 3–7 business days door-to-door for standard international express services.