Bently Nevada 330980-70-00

Bently Nevada 330980-70-00

Product Overview: The 330980-70-00 is a Proximitor sensor within the Bently Nevada 3300 XL NSv proximity transducer system. The “-70” designation indicates a DIN-rail mount configuration, providing an alternative installation method to the panel-mount “-50” variant. This Proximitor is designed for high-density DIN-rail installations in control cabinets and instrumentation panels.

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Description

Bently Nevada 330980-70-00

Technical Specifications:

  • Input: Receives signal from 3300 XL NSv proximity probes and matched extension cables
  • Power Supply: -17.5 Vdc to -26 Vdc (without safety barrier); -23 Vdc to -26 Vdc (with safety barrier)
  • Current Consumption: 12 mA typical
  • Output Signal: 0 to -17 Vdc proportional to gap
  • System Sensitivity: 7.87 mV/μm (200 mV/mil) ± 6.5%
  • Linear Range: 0.5 to 1.75 mm (20 to 55 mil)
  • Frequency Response: 0 to 10 kHz
  • Operating Temperature: -51°C to +177°C (-60°F to +351°F)
  • Mounting: DIN-rail mount

Functional Features:

  • DIN-rail mounting enables high-density installation in control cabinets
  • High immunity to radio frequency interference (RFI)
  • Mounting base provides electrical isolation without requiring a separate isolation plate
  • Fully interchangeable with panel-mount NSv Proximitor variants within the same system
  • Compatible with 3300 XL NSv proximity probes and extension cables

Application Scenarios:

  • Control cabinet installations with DIN-rail infrastructure
  • Process control panels in chemical and petrochemical plants
  • Power plant instrumentation racks
  • OEM control panel packages requiring compact DIN-rail mounting
  • Applications connected to 990 vibration transmitters and 991 displacement transmitters

Performance Parameters:

  • System sensitivity: 7.87 mV/μm (200 mV/mil) ± 6.5%
  • Linear range: 0.5 to 1.75 mm (20 to 55 mil)
  • Frequency response: 0 to 10 kHz
  • Supply voltage sensitivity: less than 2 mV output change per 1 Vdc input variation
  • Signal-to-noise ratio: 80 dB typical

Material Composition:

  • Cast aluminum housing with anodized finish
  • Internal PCB with tri-proof conformal coating
  • ClickLoc gold-plated copper connectors
  • DIN-rail clip mechanism

Structural Features:

  • DIN-rail mount form factor for high-density cabinet installation
  • Electrical isolation integrated into the mounting base
  • Factory-calibrated for system interchangeability
  • Compact physical envelope

Working Principle:
Identical to the 330980-50-00 — the Proximitor drives the probe coil with a high-frequency oscillator, detects impedance changes caused by eddy currents on the conductive target, and outputs a DC voltage proportional to the probe-to-target gap using phase-sensitive RF demodulation.

Installation Requirements:

  • Mount on standard 35 mm DIN rail
  • Ensure adequate ventilation around the Proximitor housing within the enclosure
  • Connect the extension cable from the NSv probe to the Proximitor input using ClickLoc connectors
  • Verify that the total system electrical length matches the Proximitor designation
  • Ground the system according to Bently Nevada grounding practices

Usage Notes:

  • The DIN-rail variant is preferred for new control cabinet installations where high-density mounting is required
  • The panel-mount variant (330980-50-00) is preferred for retrofit installations using legacy mounting patterns
  • Both variants are electrically identical and interchangeable within the NSv system
  • Verify the total system electrical length (probe cable + extension cable) matches the Proximitor designation before commissioning

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