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

Description

Eccentricity measurement determines shaft bow at slow-roll speeds. This bow may result from:

• Fixed mechanical bow
• Temporary thermal bow
• Temporary bow due to sag or gravity effects at rest (gravity bow)

The 3300/40 Eccentricity Monitor provides real-time eccentricity monitoring, identifying thermal or gravity-induced rotor bow. Suitable for various rotating and reciprocating machinery, it continuously measures and monitors one eccentricity channel.

Eccentricity Indications

Direct Eccentricity

The instantaneous eccentricity value.

Peak-to-Peak Eccentricity

The difference between the positive and negative extremes of the rotor bow.

Additional Information

The monitor also provides Gap Voltage and Threshold Voltage (Keyphasor® trigger point).

Specifications

Inputs

• Signal: Accepts two proximity probe signals (one for eccentricity, one for Keyphasor Input).
• Input Impedance: 10 kΩ.
• Signal Scale Factor: 200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm), jumper selectable.

Keyphasor Transducer

• Duty Cycle: 5% minimum
• Input Impedance: 90 kΩ
• Frequency Range:
  • Manual threshold: 0.017 to 10 Hz (1 to 600 cpm)
  • Automatic threshold: 1.69 to 10 Hz (100 to 600 cpm)
  • Simulated: Updated every 60 seconds

Power Consumption

Nominal: 1.5 watts

Signal Conditioning

• Frequency Response:
  • Peak-to-peak eccentricity: 0.017 Hz to 10 Hz (1 to 600 cpm)
  • Direct eccentricity: 0 to 10 Hz (0 to 600 cpm)
• Accuracy: Specified at +25°C (+77°F), ±0.33% full-scale (typical), ±1% (maximum)

Outputs

Recorder Outputs

• User-programmable: +4 to +20 mA, 0 to -10 Vdc, or +1 to +5 Vdc
• Proportional to programmed monitor full-scale
• Individual recorder outputs for direct and peak-to-peak channels
• Monitor operation unaffected by short circuits on recorder outputs

Recorder Accuracy (@ +25°C / +77°F)

• +4 to +20 mA: ±0.7% of signal, ±0.09 mA offset
• +1 to +5 Vdc: ±0.8% of signal, ±5 mV offset
• 0 to -10 Vdc: ±0.7% of signal, ±10 mV offset

Alarms

Alarm Setpoints

• Alert and Danger alarms are digitally adjustable from 0% to 100% full-scale
• Set within LCD resolution (±1.6% of full-scale)
• Repeatable within ±0.4% of full-scale

Relay Modules

• One relay module can be installed behind each monitor
• At least one alarm relay module must be ordered per 3300 System

Certifications

CE Mark Directives

• EMC Directive: Certificate No. 158710
• Low Voltage Directive: Certificate No. 135300

Hazardous Area Approvals

• CSA/NRTL/C: Class I, Div 2, Groups A, B, C, D, T4 @ +65°C
• Certification No. 150368 – 1002151 (LR 26744)

Ordering Information

Eccentricity Monitor

Part Number: 3300/40-AXX-BXX-CXX-DXX-EXX

Model: 3300/40-13-01-01-00-00

Option Descriptions

• A: Full-scale Range – Peak-to-Peak 0-500 µm, Direct 500-0-500 µm
• B: Transducer Input – 3300/7200 Proximitors®, 200 mV/mil (8 V/mm)
• C: Alarm Relay – Epoxy-sealed
• D: Agency Approval – Not Required
• E: Intrinsic Safety Barriers – None

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Contact Us

• Phone: +86-15915488782
• Email: [email protected]
• WhatsApp: +8615915488782
• Business Hours: 24/7 service
• Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

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