Bently Nevada 330780-90-00 3300 XL 11mm Proximitor Sensor
Manufacturer: Bently Nevada
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Part Number: 330780-90-00
Condition：New with Original Package
Product Type: Proximitor Sensors
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Bently Nevada 330780-90-00 Proximitor Sensor
The Bently Nevada 330780-90-00, also cataloged as the 330780 Proximitor Sensor, operates as a dedicated hardware component for converting eddy-current probe signals into standardized voltage outputs within machinery protection systems.
Suffix Breakdown & Model Matrix
| Code | Description |
|---|---|
| 330780 | 3300 XL 11 mm Proximitor Sensor |
| 90 | 9.0 meters (29.5 ft) total system length |
| 00 | Agency Approval Option |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330780-90-00 |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 3 kg |
| Dimensions | Standard 3300 XL housing |
| Operating Temp | -51 deg C to +177 deg C |
| Power Consumption | -17.5 VDC to -26 VDC input |
| Linearity | Compliant with API 670 |
Mechanical Monitoring and TSI Characteristics
The 330780-90-00 functions as the signal processing interface in an 11 mm transducer system. Accurate rotor dynamics analysis relies on the precise gap voltage validation, where the target is to maintain a -10 VDC center-gap position. The Proximitor sensor provides the necessary scaling factor to translate shaft displacement into a usable DC and AC voltage signal. To maintain signal integrity, technicians must ensure that cable impedance remains matched throughout the 9-meter length. Proper shielding techniques are required to minimize cross-talk suppression issues, especially when multiple probes are routed through the same conduit near variable frequency drives or high-energy power cables.
Frequently Asked Questions
Q: Can this sensor be used in a system with 5-meter cables?
A: No. The 3300 XL system is factory-calibrated for specific total system lengths. Substituting a 9-meter Proximitor in a 5-meter loop will introduce significant linearity errors.
Q: Is the unit hot-swappable during machine operation?
A: Yes, provided the monitor channel is placed in bypass mode to prevent false alarms or accidental machine trips during the disconnection of the transducer signal.
Q: How do I verify proper probe gap?
A: Use a digital multimeter at the terminal block to measure the DC output voltage. Ensure the reading sits at the -10 VDC target (-0.2 V to -20 V range) while the machine is at rest or at operating speed.
Field Installation Guidelines
- Mounting: Secure the Proximitor unit to a grounded metal panel. Ensure the mounting holes maintain electrical continuity with the panel for common-mode noise rejection.
- Wiring: Use high-quality shielded twisted-pair cabling for the extension cable connection. Do not allow the extension cable to come into contact with rotating parts.
- Connector Maintenance: Ensure the Coaxial connectors (ClickLoc) are hand-tightened. Do not use tools for tightening, as over-torqueing will damage the connector dielectric and compromise impedance.
- Environment: While the sensor is robust, avoid locations with direct high-pressure steam exposure or areas where oil pooling may cover the connector interface.