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Bently Nevada

Bently Nevada 3300/40-13-01-01-00-00 Eccentricity Monitor Module
SKU: 3300/40-13-01-01-00-00
In stock: 15
Description

Bently Nevada 3300/40-13-01-01-00-00 Eccentricity Monitor Module

The Bently Nevada 3300/40-13-01-01-00-00, also cataloged as the 3300/40 Eccentricity Monitor Module, serves as a single-channel displacement monitor for shaft bow deflection analysis within the 3300 machinery protection system.

Suffix Breakdown & Model Matrix

  • 3300/40: Eccentricity Monitor Module
  • 13: Full-scale range option — 0 to 15 mils peak-to-peak
  • 01: Transducer input option — 3300 Proximity Transducer System (200 mV/mil)
  • 01: CSA/NRTL/C approval (Class 1, Division 2, Groups A, B, C, D)
  • 00: No intrinsically safe barriers installed
  • 00: No alarm relays (alarms routed via backplane bus)
  • 00: No trip multiply functionality

Hardware Specifications

Parameter Specification
Model 3300/40-13-01-01-00-00
Brand Bently Nevada
Origin U.S.A
Weight ~1.36 kg (3.0 lbs)
Dimensions Rack slot module, full-height
Operating Temp 0 deg C to +60 deg C (+32 F to +140 F)
Storage Temp -40 deg C to +85 deg C (-40 F to +185 F)
Relative Humidity Up to 95%, non-condensing
Power Consumption ~1.5 W typical
Input Signal Single channel, non-contact proximity probe, nominal 0 to -10 VDC gap voltage
Signal Accuracy ±0.33% typical, ±1% maximum of full scale at +25 deg C
Transducer Supply -24 VDC excitation to Proximitor sensor
Recorder Outputs Configurable: 4–20 mA, 0 to -10 VDC, or 1–5 VDC
Buffered Outputs Dynamic unfiltered signal via front-panel BNC connector
Measurement Modes Direct (instantaneous gap) and Peak-to-Peak (shaft bow deflection)
Keyphasor Input Requires once-per-revolution trigger via backplane or direct input module

Eddy-Current Probe Scaling and Rotor Dynamics

The 3300/40 module applies eddy-current probe scaling to convert gap voltage into precise shaft displacement values. Gap voltage validation against -10 VDC reference ensures probe alignment and installation accuracy. Rotor dynamics monitoring is enhanced by tracking both direct gap and peak-to-peak eccentricity, with cross-talk suppression across backplane channels to maintain signal fidelity.

Frequently Asked Questions (FAQ)

Q: Does the 3300/40 module provide its own alarm relays? A: No. Alarm signals are routed via the backplane bus to rack-mounted relay modules.

Q: How is the buffered output accessed? A: A front-panel coaxial BNC connector provides a dynamic, unfiltered signal for diagnostic use.

Q: What is required for eccentricity measurement synchronization? A: A once-per-revolution Keyphasor input is required to align eccentricity measurements with shaft rotation.

Field Installation Guidelines

  • Install the module in designated rack slots with full connector engagement.
  • Ensure proximity probe cabling is shielded and grounded at the rack end to minimize induced noise.
  • Validate probe gap voltage near -10 VDC during commissioning for accurate displacement scaling.
  • Route Keyphasor input wiring separately to avoid interference with displacement signals.
  • Configure recorder outputs via internal jumpers before system startup.
  • Maintain ambient conditions within specified operating and storage ranges.