Bently Nevada 330850-91-00 3300 XL 25 mm Proximitor Sensor
330850-91-00
Bently Nevada Proximitor Sensor
3300 XL 25 mm
Brand Name:
Bently Nevada
330850-91-00
,Bently Nevada Proximitor Sensor
,3300 XL 25 mm
Bently Nevada 330850-91-00
Proximitor Sensor for compatible 3300 XL 25 mm non-contact displacement measurement systems.
Product Overview
This sensor operates with a compatible proximity probe and extension cable as part of a non-contact displacement transducer system. The 25 mm system is designed for extended-range differential-expansion measurement on medium and large steam turbine generators.
Application & Failure Scenarios
Typical Application
Steam turbine supervisory instrumentation, particularly differential-expansion monitoring that assesses relative movement between the rotor and casing.
When Replacement Is Considered
Maintenance teams may investigate the sensor when a channel loses its signal, displacement readings become unstable, output appears abnormal or sensor failure is suspected. The probe, extension cable, field wiring and monitor input should also be checked.
Unreliable differential-expansion data can impair machine-condition assessment and may activate configured alarms or trips. Verify the complete signal chain before replacing parts or returning equipment to service.
Technical Specifications
Installation, Wiring & Measurement Conditions
The published performance values are system specifications under stated test conditions, including a −24 V DC supply, 10 kΩ load, specified AISI 4140 steel target and probe gap. Results may differ with other target materials or installation conditions.
The probe and extension-cable lengths must add up to the specified total system length. Verify the complete matched component set before installation.
The manufacturer recommends three-conductor shielded triad field cable, 0.2–1.5 mm² (16–24 AWG), subject to the specified termination requirements. Maximum field wiring between the Proximitor Sensor and monitor is 305 m (1,000 ft); high-frequency response can roll off with longer wiring.
The sensor uses SpringLoc terminal connections. Follow the applicable manufacturer wiring diagrams, grounding requirements and hazardous-area installation instructions. The 00 ordering option does not provide agency approvals.
The complete 3300 XL 25 mm system is specified for differential-expansion applications. When upgrading from another transducer system, verify the required matched components rather than assuming that replacing the sensor alone is sufficient.
Documentation & Part Verification
For the 330850-91-00 datasheet PDF, refer to the manufacturer’s 3300 XL Proximity Transducer System Datasheet, publication 163236, Rev. M. Confirm the ordering configuration and installation requirements against the documentation supplied for the actual system.
Delivery & Warranty
Testing & Packaging
Inspection and any agreed functional checks should be confirmed before ordering. Protective industrial-electronics packaging and shipment condition are confirmed with the quotation.
Returns, DOA & Warranty
Report transit damage or suspected DOA promptly with order details and supporting evidence. Return authorization, warranty period, exclusions and remedy are governed by the agreed sales terms; manufacturer warranty is not implied.
Frequently Asked Questions
As part of a compatible 3300 XL 25 mm transducer system, it converts proximity-probe displacement into an electrical signal used for machinery monitoring, including differential expansion.
91 specifies a 9.0 m system with DIN mounting; 00 specifies the no-approvals option.
The Proximitor Sensor is one component of the transducer system. The probe and extension cable are separate components and must match the required total system length.
The manufacturer documents 3300 XL 25 mm system compatibility with standard 7200 25 mm, 7200 35 mm and 25 mm DE Integral systems. For an upgrade, the probe, extension cable and Proximitor Sensor must all be replaced with matching 3300 XL 25 mm components.
Confirm the part number, total system length, mounting option, approval requirements, matched probe and extension cable, and the installed monitor configuration.
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These additional industrial part numbers come from your supplied list. Their inclusion does not indicate compatibility with this sensor.
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