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Technical specifications for 3300/45
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:3300/45
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Estimated shipping dimensions:5x32.7x20.3cm
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Weight:1 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Monitor Function:Dual differential expansion
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Input Channels:Two proximity-transducer signals
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Channel B:May be disabled for single-location use
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Input Impedance:10 kohm
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Scale Factor Selection:20 mV/mil or 10 mV/mil, jumper selectable
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Power Consumption:1.5 W nominal
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Recorder Outputs:4-20 mA, 0 to -10 VDC, or 1 to 5 VDC
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Buffered Outputs:Front coaxial and rear terminal for each channel
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Alarm Setpoints:Alert and Danger per channel
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Display:63-segment vertical LCD per channel with center gap scale
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Operating Temperature:0 to +65 deg C
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Rack Position:Any available monitor position after power supply and system monitor
Information
Overview
Manuals
Common Applications
Product Precautions
Bently Nevada 3300/45 adds a documented expansion monitor execution to the installed machinery-monitoring path.
- Monitors two continuous differential-expansion channels.
- Shows both magnitude and direction of rotor-to-casing movement.
- Provides configurable recorder outputs and buffered transducer connections.
- Supports independent Alert and Danger processing for each channel.
Differential expansion is measured between the rotor and machine casing away from the thrust bearing. Probe geometry, scale-factor jumper, zero direction and alarm logic must agree with the actual turbine installation.
Important Notice: The supplied reference file is evidence only and must not be linked or uploaded on the product page.
Bently Nevada 3300/45 Manuals & Downloads
Bently Nevada 3300/45 Technical Reference (PDF)Bently Nevada 3300/45 Installation & Commissioning Guide (PDF)
The Technical Reference organizes the exact ordering identity, applicable characteristics and system boundary for this expansion monitor. The Installation & Commissioning Guide covers identification, pre-installation checks, connections, functional verification and the acceptance record.
Steam-turbine differential expansion
Monitor rotor growth relative to the casing during startup and shutdown.
Turbine supervisory instrumentation
Integrate two axial proximity measurements into a 3300 monitoring rack.
Single-point expansion
Disable channel B when the approved machine design uses one location.
Recorder integration
Send configured current or voltage outputs to a recorder or control system.
Use the complete Bently Nevada 3300/45 identity and the applicable controlled procedure before work.
1
Verify the complete 3300/45 identity and installed rack position.
2
Record both proximity-transducer inputs before disturbing field wiring.
3
Confirm the selected 10 or 20 mV/mil scale factor for each channel.
4
Restore full-scale, upscale direction and zero-position settings.
5
Check recorder-output mode and receiving-channel scaling.
6
Restore Alert, Danger, time delay, latching and relay voting logic.
7
Verify channel-B enable or disable state against the machine design.
8
Test probe gap, displayed movement, recorder output and alarm response before release.
Technical notes
The supplied reference file is evidence only and must not be linked or uploaded on the product page.
FAQ View All FAQ
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What does Bently Nevada 3300/45 measure?It measures differential expansion, or rotor axial position relative to the machine casing.
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How many channels does Bently Nevada 3300/45 provide?It provides two continuous differential-expansion channels.
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Can channel B be disabled on Bently Nevada 3300/45?Yes. Channel B can be turned off for a machine requiring one measurement location.
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Which transducer signals does Bently Nevada 3300/45 accept?It accepts two compatible proximity-probe transducer signals.
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Which recorder outputs are available from Bently Nevada 3300/45?The monitor can be configured for 4-20 mA, 0 to -10 VDC or 1 to 5 VDC outputs.
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How are alarms arranged on Bently Nevada 3300/45?Each channel has independent Alert and Danger setpoints.
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What scale factors can Bently Nevada 3300/45 use?The input can be jumper-selected for 20 mV/mil or 10 mV/mil.
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What confirms commissioning of Bently Nevada 3300/45?Verify probe gaps, both movement directions, recorder scaling, channel state and alarm response.
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