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Description：

The 330878-51-00 identifies a Bently Nevada 3300 XL 50mm Proximitor Sensor. This industrial proximity sensor is designed for long-throw measurements, such as measuring rotor/differential expansion in large machinery and steam turbines. The "-51-00" suffix denotes a 5.0-meter system length with panel mounting and no hazardous area agency approvals.

The 3300 XL 50 mm Proximitor Sensor has thesame advanced features as all 3300 XLProximitor Sensors. Its thin design allows it to bemounted in either a high-density DIN-railinstallation or a more traditional panel mountconfiguration. Improved RFI/EMl immunityallows the 3300 XL Proximitor Sensor to achieveEuropean CE mark approvals without anyspecial mounting considerations. This RFIimmunity prevents the transducer system frombeing adversely affected by nearby highfrequency radio signals. SpringLoc terminalstrips on the Proximitor Sensor require nospecial installation tools and facilitate faster,highly robust field wiring connections.

Specification：

Frequently asked questions

Q1: What is the Bently Nevada 330878-51-00 3300 XL 50 mm Proximitor Sensor used for?

A: The Bently Nevada 330878-51-00 is a 3300 XL 50 mm Proximitor Sensor used for non-contact measurement of shaft displacement, vibration, and position in large rotating machinery. It is commonly integrated into machinery protection and condition monitoring systems.

Q2: What is the average scale factor of the 330878-51-00?

A: The sensor provides an Average Scale Factor (ASF) of 394 mV/mm (10 mV/mil) nominal, allowing accurate conversion of shaft movement into proportional electrical output signals.

Q3: What power supply does the 330878-51-00 require?

A: The sensor requires a power supply between -17.5 VDC and -26 VDC for normal operation.

Q4: What is the 330878-51-00 extension cable capacitance of this Proximitor Sensor?

A: The typical extension cable capacitance is 69.9 pF/m (21.3 pF/ft), which is optimized for proper system calibration and signal integrity.

Product Applications

Power plants and nuclear power plants: This is the primary application area for this sensor. It is used to continuously monitor the axial displacement, differential expansion (DE), and rotor expansion (RX) of large steam turbine generator sets.

Oil, gas, and petrochemical plants: In large centrifugal compressors, reciprocating compressors, and heavy-duty units, it monitors bearing vibration and shaft displacement to prevent flammable gas leaks or equipment damage caused by wear of high-speed rotating components.

Large hydroelectric power plants: It monitors the runout and axial displacement of the turbine generator shaft, as well as the mechanical vibration of the unit.

Heavy industrial manufacturing plants (such as large steel mills and paper mills): It monitors the operating status of core heavy-duty rotating machinery such as large blowers and large rolling mill drive shafts.