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- Bently Nevada
- 3300/16-11-01-02-00-02-00
- XY/Gap Dual Vibration Monitor
- USA
- 83 mm
- 1 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Bently Nevada 3300/16-11-01-02-00-02-00 XY/Gap Dual Vibration Monitor is a rack-mounted machinery monitoring instrument used to measure radial shaft vibration and average shaft position (gap). It belongs to the 3300 monitoring system and accepts signals from compatible proximity probe and Proximitor transducer systems.
Unlike a standalone vibration sensor, the 3300/16 processes incoming measurement signals and provides local indication, alarm functions, and outputs for integration with plant monitoring equipment. Its dual-channel arrangement allows two radial vibration measurements to be monitored independently, while the gap indication helps operators assess the probe-to-shaft measurement condition.
This combination is useful on rotating equipment where shaft vibration and position are important operating parameters. Centrifugal compressors, steam turbines, pumps, and other machinery may experience changes in shaft movement as load, speed, bearing condition, or operating temperature changes. Monitoring both vibration and probe gap gives maintenance personnel additional information when investigating unusual readings.
The monitor uses a front-panel display with separate channel indications and status LEDs. Operators can review vibration levels, identify alarm conditions, and check whether a channel or transducer circuit has entered a not-OK state. The monitor also supports configurable Alert and Danger alarm thresholds, together with gap Alert monitoring.
For example, a compressor may have proximity probes installed near two orthogonal directions at a bearing. The monitor processes the corresponding signals and displays the radial vibration measurements. If either channel exceeds its configured alarm threshold for the applicable time, the corresponding alarm indication and relay arrangement can respond according to the installed configuration.
The 3300/16 is part of a larger monitoring architecture. Its measurements depend on compatible probes, Proximitor sensors, cabling, rack power, and the receiving monitoring system. Correct selection of the transducer input option is particularly important because the monitor must match the electrical characteristics of the installed probe system.
For maintenance teams, this model is useful when an existing 3300 rack requires a compatible dual vibration and gap monitoring module. The complete order code defines configuration options, so the monitor’s range, transducer input, relay arrangement, approvals, and safety-barrier configuration must be understood as part of the equipment specification.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 3300/16-11-01-02-00-02-00 |
| Product Series | 3300 Monitoring System |
| Product Type | XY/Gap Dual Vibration Monitor |
| Measurement Channels | 2 independent radial vibration channels |
| Additional Measurement | Average shaft position (gap) |
| Signal Inputs | Compatible proximity probe/Proximitor signals |
| Input Impedance | 10 kΩ |
| Programmable Sensitivity | 100 mV/mil (4 V/mm) or 200 mV/mil (8 V/mm) |
| Frequency Response Options | 4–4,000 Hz or 1–600 Hz |
| Nominal Power Consumption | 2 W |
| Recorder Output Options | +4 to +20 mA, 0 to −10 V DC, or +1 to +5 V DC |
| Alarm Functions | Radial vibration Alert and Danger; gap Alert |
| Display | Three-scale vertical bargraph LCD arrangement |
| Vertical Size | 83 mm |
| Weight | 1 kg |
Product Features
- Dual-channel vibration monitoring: Measures two independent radial vibration signals from compatible transducer systems.
- Shaft gap indication: Displays average shaft position information derived from the proximity measurement circuit.
- Configurable sensitivity: Supports the specified 100 mV/mil and 200 mV/mil sensitivity options.
- Selectable frequency response: Provides frequency-response options for different machinery monitoring requirements.
- Alert and Danger alarms: Supports configured vibration thresholds and corresponding alarm indications.
- Gap Alert monitoring: Provides gap alarm functionality to help identify probe-position or measurement-channel conditions outside the configured limits.
- Front-panel status indication: Uses channel OK, alarm, and bypass LEDs to communicate operating status.
- Recorder outputs: Supports selectable current or voltage outputs for compatible external recording equipment.
- Buffered transducer outputs: Provides access to transducer signals through front-panel coaxial connectors and rear-panel terminals.
- Rack integration: Occupies one monitor position in a compatible 3300 monitoring rack.
Working Principle
The 3300/16 processes electrical signals from compatible proximity probe and Proximitor systems. The probes detect changes in the distance between their sensing tips and conductive shaft surfaces. The Proximitor sensors condition those responses, and the monitor uses the resulting signals to calculate and display radial vibration and gap measurements.
Shaft Movement → Proximity Probes → Proximitor Sensors → 3300/16 Monitor → Alarm and Recorder Outputs
The monitor evaluates two independent radial vibration channels. Each channel displays its measurement on the front panel, allowing operators to compare shaft movement in the two monitored directions. The gap indication provides information about the average probe-to-target position, which is useful when assessing the measurement setup and shaft operating condition.
Vibration alarm thresholds are configured for the application. When a measurement reaches the relevant Alert or Danger threshold for the applicable time, the monitor activates the corresponding indication and associated alarm functions according to the installed relay arrangement. Gap Alert monitoring operates separately and can identify a gap measurement outside its configured limits.
The monitor also provides recorder outputs that can be configured for supported current or voltage ranges. These outputs allow vibration measurements to be sent to compatible recording or control equipment. Buffered transducer outputs provide additional access to the signal for suitable monitoring or diagnostic purposes.
The selected transducer input option affects compatibility with the connected probe system. Different probe families can have different sensitivity and supply requirements, so the monitor’s configuration must match the installed transducer arrangement. An incompatible input configuration can produce incorrect measurements or prevent the channel from operating as intended.
The 3300/16 is a monitoring instrument rather than a proximity sensor. It relies on the connected probes and Proximitor sensors to detect shaft movement, while its own functions include measurement processing, indication, alarm evaluation, and supported output signaling.
Role in the Machinery Monitoring Architecture
The Bently Nevada 3300/16-11-01-02-00-02-00 sits between the proximity transducer system and the wider machinery monitoring arrangement. It processes vibration and gap measurements, displays channel status, and provides alarm and recorder outputs according to its configuration.
Machine Shaft → Proximity Probe → Proximitor Sensor → 3300/16 Monitor → Rack Alarm Relay / Plant Monitoring Equipment
| System Component | Function |
|---|---|
| Bently Nevada 3300/16 Monitor | Processes two radial vibration channels and gap measurements |
| Proximity Probe | Detects changes in the gap between the probe tip and conductive shaft |
| Proximitor Sensor | Conditions the probe response for the monitoring circuit |
| Extension Cable | Connects the probe and Proximitor as part of the transducer system |
| 3300 Rack Power Supply | Supplies power to the monitoring rack |
| Alarm Relay Module | Provides configured alarm relay contacts |
| Recorder or Data Acquisition Equipment | Receives supported analog measurement outputs |
| Machinery Monitoring System | Collects and displays available machinery measurements |
| Machinery Protection Arrangement | Uses configured monitoring outputs and associated control logic for protective responses |
Industrial Applications
| Application | Typical Use |
|---|---|
| Centrifugal Compressors | Monitoring radial shaft vibration and probe gap |
| Steam Turbines | Measuring shaft vibration in two radial directions |
| Gas Turbines | Monitoring supported shaft vibration channels |
| Industrial Pumps | Detecting changes in relative shaft movement |
| Power Generation Equipment | Providing vibration and gap measurements for machinery monitoring |
| Petrochemical Facilities | Monitoring critical rotating equipment in process installations |
| Refinery Machinery | Supporting condition monitoring of compressors and pumps |
| Process Gas Compression | Tracking vibration levels and probe measurement conditions |
| Rotating Machinery Maintenance | Reviewing channel status and investigating abnormal vibration readings |
| Existing 3300 Rack Installations | Replacing a compatible dual vibration and gap monitoring module |
Installation and Maintenance
- Verify the complete model code: Confirm that the required monitor is 3300/16-11-01-02-00-02-00 and identify its configured options.
- Check the rack arrangement: Confirm that the installation uses a compatible 3300 rack and that the intended monitor slot is available.
- Prepare the equipment safely: Follow the site’s electrical and machinery maintenance procedures before removing or installing monitoring modules.
- Verify transducer compatibility: Match the monitor’s input configuration to the connected probe and Proximitor system.
- Inspect the rack connector: Check the module connector and rack interface for damage, contamination, or bent contacts.
- Install the monitor: Insert the module into the designated rack position using the prescribed installation procedure.
- Check the transducer wiring: Confirm that the two channel inputs and their associated transducer connections are correctly assigned.
- Review alarm settings: Verify the configured vibration and gap alarm thresholds against the machinery monitoring requirements.
- Check recorder outputs: Confirm that the selected output type matches the connected recorder or data acquisition input.
- Verify channel status: Observe the channel OK, alarm, and bypass indicators after the rack is restored to operation.
- Test the measurement response: Compare displayed readings with expected operating conditions and investigate abnormal channel indications.
- Document the configuration: Record the monitor model, input options, alarm settings, output configuration, and commissioning observations.
Related Components
| Component | Function |
|---|---|
| Bently Nevada 3300/16 XY/Gap Dual Vibration Monitor | Processes two radial vibration channels and gap measurements |
| Bently Nevada 3300 XL Proximity Probe | Detects shaft displacement in a compatible transducer system |
| Bently Nevada Proximitor Sensor | Conditions the proximity probe signal |
| Compatible Extension Cable | Connects the probe to the associated Proximitor |
| Bently Nevada 3300 Rack Power Supply | Supplies power to the rack-mounted monitoring modules |
| Bently Nevada 3300 System Monitor | Provides rack-level monitoring and system status functions |
| Bently Nevada Alarm Relay Module | Provides configured relay outputs for monitoring alarms |
| Recorder or Data Acquisition System | Receives supported analog measurement outputs |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Bently Nevada 3300/16 | XY/Gap Dual Vibration Monitor | Dual radial vibration and shaft-gap monitoring |
| Bently Nevada 3300/15 | Dual Radial Vibration Monitor | Radial vibration monitoring without the same gap alarm functionality |
| Bently Nevada 3300 XL Proximity Probe | Proximity Probe | Non-contact shaft displacement measurement |
| Bently Nevada 3300 XL Proximitor Sensor | Signal-Conditioning Sensor | Processing compatible proximity probe signals |
| Bently Nevada 3300 System Monitor | Rack System Monitor | Rack-level status and monitoring functions |
| Bently Nevada 3300 Rack Power Supply | Power Supply | Supplies the monitoring rack |
Key Advantages
- Monitors two independent radial vibration channels.
- Provides shaft-gap indication and gap Alert functionality.
- Supports configurable vibration alarm thresholds.
- Offers selectable analog recorder outputs.
- Integrates into compatible Bently Nevada 3300 monitoring racks.
Technical FAQs
What measurements does the 3300/16 provide?
It monitors two independent radial vibration channels and displays average shaft position (gap) information from compatible proximity transducer systems. The available alarm and output functions depend on the configured monitor and installed rack arrangement.
Why does the transducer input option matter?
The input option determines which proximity transducer family and sensitivity arrangement the monitor supports. The connected probes and Proximitor sensors must match the monitor’s configured input characteristics to obtain the intended measurement response.
How are vibration and gap alarms handled differently?
Vibration monitoring supports Alert and Danger thresholds, while gap monitoring provides a gap Alert function. The monitor’s indications and associated relay responses depend on the configured thresholds and installed alarm relay arrangement.
Can the recorder output be connected directly to a PLC?
The monitor supports selectable current and voltage recorder outputs. Connection to a PLC depends on whether its analog input accepts the selected signal range and whether the electrical interface is suitable for the installation.