
The Bently Nevada 3300 XL NSV Proximity Transducer series is built for continuous shaft monitoring on rotating machinery — particularly centrifugal air compressors, refrigeration compressors, process gas compressors, and other machines where installation space is tight. Amikon stocks probes, extension cables, and related components to support active installations and urgent replacement needs.
These transducers operate on the eddy-current principle, detecting changes in distance between the probe tip and a rotating shaft without physical contact. Each unit is part of a complete measurement chain — probe, extension cable, and proximitor driver — that must be matched as a calibrated set. All components use gold-plated brass ClickLoc connectors, and connector compatibility must be confirmed when sourcing replacement parts.
Radial vibration data is captured in real time, feeding directly into protection systems that trigger alarms or shutdowns when amplitude exceeds safe limits.
Thrust displacement is tracked longitudinally along the shaft axis. Excessive axial movement signals thrust bearing wear — a failure mode that causes severe equipment damage if undetected.
A once-per-revolution signal supports shaft balancing, orbit analysis, and synchronous diagnostics within the monitoring system.
The 3300 XL NSV series integrates with:
Signal compatibility must be confirmed before substituting components across different system generations.
Many 3300 XL NSV configurations are now end-of-life from the original manufacturer. For facilities running existing installations, sourcing replacements through standard channels is increasingly difficult.
Amikon maintains access to these parts through surplus stock, and a global procurement network. Representative part numbers available for inquiry include 330902-05-20-10-02-05, 330901-00-09-05-02-00, and 330903-00-10-10-02-05, among others.
Replacing individual components within the existing 3300 XL NSV platform is the faster, lower-risk path compared to a full system upgrade — and sourcing the right spare part keeps your protection system calibrated and operational.
Yes, but the replacement probe must match the calibration of the existing extension cable and proximitor driver. Mixing unmatched components introduces measurement errors.
Check the label on the probe body, system wiring diagram, or original purchase records. If unavailable, provide the thread size, cable length, armor configuration, temperature class, and output voltage to cross-reference the correct part number.
Both use 1/4-28 UNF thread. The 330901 is supplied without armor; the 330902 is supplied with armor — selected where cable routing is exposed to mechanical damage. For 3/8-24 UNF thread applications, the 330908 is the correct designation.

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