Bently Nevada 330980-71-00 3300 XL NSv Proximitor Sensor

Product Description

Configured for eddy-current proximity measurement in the Bently Nevada 3300 XL NSv machinery protection platform, the Bently Nevada 330980-71-00 (330980-71-00 Proximitor Sensor) provides direct physical/electrical execution of displacement-to-voltage conversion for rotating shaft monitoring.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330980-71-00 drives an 8 mm 3300 XL NSv eddy-current probe and converts the RF impedance variation into a linear DC voltage proportional to shaft-to-probe tip gap. Probe scaling follows the standard 7.87 V/mm (200 mV/mil) sensitivity curve when paired with the matching 3300 XL NSv probe and extension cable assembly. Gap voltage validation targets -10 VDC at the calibrated midpoint; field commissioning requires verification that the static gap voltage sits within +/-1 VDC of this value before rotor run-up. Cross-talk suppression is achieved through shielded twisted-pair probe cable and isolated DIN-mount housing, limiting inductive coupling from adjacent transducer loops to below 2 % signal deviation.

Frequently Asked Questions

Q: Can the 330980-71-00 be hot-swapped on a live 3300 XL rack without disturbing adjacent channel readings?

A: No. The proximitor is mounted externally on DIN rail and connected to the 3300 XL front I/O via coaxial probe cable; removing it breaks the probe loop and forces the associated monitor channel into an alarm state. Rack power must remain on, but the specific transducer loop should be bypassed in the monitor prior to physical disconnection.

Q: What is the output resistance tolerance and how does it affect cable length selection?

A: Output resistance is fixed at 50 Ohm. The 7.0 m system length already includes the extension cable; exceeding this length degrades high-frequency probe drive stability and shifts calibration. Use only Bently Nevada certified 3300 XL NSv extension cables cut to the 5 m or 7 m standard lengths.

Q: Does the gold-plated brass connector require anti-oxidation treatment in coastal humidity?

A: No chemical treatment is required. Gold plating prevents oxidation under normal industrial humidity. However, the DIN-mount aluminum housing must still be bonded to the panel ground bus to maintain EMI shielding continuity.

Field Installation Guidelines

Mount the proximitor on a 35 mm DIN rail inside the 3300 XL system cabinet. Keep the probe cable separated from power wiring by at least 150 mm or run it in a dedicated grounded conduit. Terminate the probe cable shield at the proximitor end only; leave the rack end floating to avoid ground loops. Set the DIP switches (if present) to match the 7.0 m system length configuration. After mechanical installation, apply -24 VDC loop power from the 3300 XL monitor, then measure gap voltage with shaft at known rest position and adjust probe insertion until -10 VDC is reached. Label the DIN rail slot and record the serial number against the channel map.

Other Attributes

• Series: 3300 System
• Country of Origin: USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of The 3500 System

Our Competitive Brands

• - ABB Advant-800xA，Advant OCS，Bailey Infi 90 and Net 90，H&B Freelance 2000，DSQC Robots，IGCT / IGBT
• - GE General Electric Field Control, Genius I/O, QuickPanel, RX3i PacSystem, Series 90, Series 90, Series VersaMax
• - Allen Bradley Allen-Bradley SLC500, MicroLogix, CompactLogix, ControlLogix, PLC-5, Panel View,
• - Bently Nevada 3300 System, 3500 System
• - Honeywell 7800 Series, FSC, IPC, Mxopen, TDC 2000, TDC 3000, Experion PKS(C200,C300)
• - Yokogawa Centum CS - Centum VP, Centum XL - micro XL, FA-M3, ProSafe-PLC
• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

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