Bently Nevada 330980-51-05 3300 XL NSv Proximitor Sensor
The Bently Nevada 330980-51-05 is engineered for "Near Side" (NSv) proximity applications where standard 8mm probe systems fail due to target size constraints or tight clearance envelopes. This Proximitor sensor translates the complex eddy current signals from a 3300 XL NSv probe into a linear voltage output, typically used for monitoring radial vibration and axial position on small-diameter shafts (less than 13mm / 0.5 in). Unlike standard XL series, the NSv variant is optimized for centrifugal air compressors and refrigeration units where the target material and side-view interference require a specialized, tighter magnetic field.
Technical Configuration
Model: 330980-51-05
Module Type (-51): Factory-calibrated for use with the 3300 XL NSv Proximity Probe and extension cable. This ensures the 200 mV/mil (7.87 V/mm) scale factor remains linear over a 1.5 mm (60 mil) operating range.
System Length (-05): Tuned specifically for a 5.0-meter total system length. Mismatched cable lengths (e.g., using a 5m sensor with a 9m cable) will induce significant scale factor errors and nullify API 670 compliance.
Mounting Interface: Standard 35mm DIN rail or panel-mount hardware, featuring a high-retention coaxial connector to mitigate signal drift in high-vibration environments.
Field Integration & Maintenance
Integrating the 330980-51-05 into an existing protection rack (like the 3500/42M) requires precise -24VDC power supply stability. From a field reliability perspective, the Proximitor's internal circuitry is hardened against Radio Frequency Interference (RFI), but maintaining a low-impedance ground path to the monitor rack is non-negotiable for eliminating "ghost" vibration readings. When replacing legacy 3300 units, ensure the probe tip diameter is compatible with the NSv's narrower linear window to avoid signal "bottoming out" during high-speed transients.
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Key Brands in Stock
Honeywell (Experion, TDC 3000)
Bently Nevada (3500/3300 Monitoring)
ABB (800xA, Bailey Infi 90)
Siemens (Moore, S5, S7)
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