330980-70-00 | Bently Nevada 3300XL NSv Proximitor Sensor

Product Overview

The Bently Nevada 330980-70-00 is a 3300 XL NSv Proximitor Sensor with a 7.0 meter (23.0 feet) system length and panel mount configuration. The NSv (Narrow Side-view) transducer system is purpose-built for tight installation environments where standard 5 mm or 8 mm proximity probes cannot physically fit. It delivers reliable radial vibration, axial position, and Keyphasor measurements on small targets (shafts <51 mm diameter, flat targets <15 mm) and serves as a direct upgrade path for legacy 3300 RAM and 3000/7000-series 190 transducer systems.

Key Specifications

• Product Type: 3300 XL NSv Proximitor Sensor
• System Length: 7.0 meters (23.0 feet)
• Mounting Option: Panel mount
• Linear Range: 1.5 mm (60 mils)
• Average Scale Factor: 7.87 V/mm (200 mV/mil)
• Power Requirements: -17.5 Vdc to -26 Vdc (max 12 mA without barriers); -23 Vdc to -26 Vdc with barriers
• Supply Sensitivity: <2 mV per volt input change
• Output Resistance: 50 Ω
• Operating Temperature: -52°C to +100°C (-62°F to +212°F)
• Storage Temperature: -52°C to +105°C (-62°F to +221°F)
• Relative Humidity: 100% condensing (tested to IEC 68-2-3)
• RFI/EMI Immunity: 10 V/m, 10 kHz to 1 GHz
• Material: A380 aluminum (500-hour salt spray resistance)
• Weight: Approx. 255 g (9 oz)
• Agency Approval: 00 = None

Features & Benefits

• Extended 7.0 meter system length — bridges longer cable runs between machine and monitoring cabinet without signal degradation, eliminating the cost of intermediate junction boxes
• Tight-space probe design — slim profile fits into counterbores, seal cavities, and side-view ports inaccessible to standard 8 mm probes
• Small target measurement — maintains accuracy on shafts as small as 51 mm (2 in) and flat targets as small as 15 mm (0.6 in)
• CE-compliant RFI/EMI immunity — withstands 10 V/m radiated fields without special shielding or grounding practices
• SpringLoc terminals — tool-free, robust wire termination supporting 14 AWG conductors for faster field wiring

Typical Applications

• Centrifugal air compressors with deep counterbored bearing housings
• Refrigeration and process gas compressors in petrochemical facilities
• Small pump and motor radial vibration monitoring
• Gearbox shaft position and speed measurement in confined housings
• Turbomachinery with limited probe access due to piping or insulation
• Retrofit projects replacing 3000-series 190 transducer systems with modern NSv technology

Installation Guide

1. Confirm physical fit — verify the NSv probe body diameter and length fit within your counterbore or viewing port; check side-view clearance.
2. Plan 7.0 meter cable route — route the extension cable through cable trays or conduit, maintaining separation from high-voltage cables.
3. Mount proximitor on panel — secure in a vibration-free cabinet location using the panel mount holes; ensure adequate ventilation.
4. Assemble transducer system — connect probe to extension cable, then to proximitor; verify all connectors are fully seated and locked.
5. Apply -24 Vdc power — use a regulated supply; with barriers, limit voltage to -23 to -26 Vdc. Verify output bias voltage.
6. Gap probe to target — set gap to approximately 0.75 mm (midpoint of 1.5 mm linear range) for optimal linearity.
7. Verify system output — confirm 7.87 V/mm scale factor using a micrometer or calibration target.

FAQ

Q: What is the difference between 330980-70-00 and 330980-50-00?
A: The 330980-70-00 provides 7.0 meters of total system length versus 5.0 meters for the 330980-50-00. Both are panel mount NSv proximitors with identical electrical specifications. Choose 70 for longer cable runs.

Q: Can I use this with a 3300 XL 8 mm probe?
A: No. The 330980 is an NSv proximitor calibrated specifically for NSv probes. The coil geometry and impedance differ from 8 mm systems. Mixing probe types will produce incorrect measurements.

Q: What is the maximum linear range of the NSv system?
A: The NSv system provides a 1.5 mm (60 mils) linear range, which is greater than the legacy 3000-series 190 transducer system it replaces.

Q: Does this proximitor have hazardous area approvals?
A: The -00 suffix indicates no agency approvals. For hazardous areas, select a variant with -05 or -CN suffix, or install with approved intrinsic safety barriers.

Q: What wire gauge does SpringLoc support?
A: SpringLoc terminal strips support conductors up to 14 AWG (2.0 mm²). No special crimping tools are required — simply insert the stripped conductor until the spring locks.

Selection Tips

• Select 330980-70-00 when your probe-to-panel distance is between 5.1 and 7.0 meters.
• For runs ≤5.0 meters, the 330980-50-00 is more economical. For runs >7.0 meters, consider relocating the proximitor or using the 9.0 m variant.
• Verify target material and size before ordering — NSv is optimized for small ferrous targets; non-standard materials may require system recalibration.
• For DIN rail installations, search for -51 or -91 suffix variants instead of -50 or -70.
• Ensure your monitoring system (e.g., 3500/42M, 1900/65A) is configured for the NSv scale factor (7.87 V/mm or 200 mV/mil).