Bently nevada 330878-51-00 3300 XL 50 mm Proximitor Sensor

Bently nevada 330878-51-00, In Stock, please contact us and we will provide you with an official quotation！

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Warranty: 12 months.

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Manufacturer: Bently Nevada

Part Number: 330878-51-00

Product Type: 3300 XL 50 mm Proximitor Sensor

Total Length and Mounting: 5.0 metres (16.4 feet) system length, DIN mount 

Series: 3300

Functional Description

330878-51-00 is a 3300 XL 50 mm Proximity Probe manufactured by Bently Nevada. 330878-51-00 is used in 3300 XL 50mm Proximity Transducer System.The 3300 XL 50 mm Transducer System consists of a separate 50 mm probe, an extension cable, and a 3300 XL 50 mm Proximitor Sensor.  The large diameter coil gives this system a maximum linear range of 27.9 mm (1100 mils), the longest linear range of our eddy current transducer line. This linear range makes the 3300 XL 50 mm Transducer System ideal for measuring the differential expansion (DE) or rotor expansion (RX) of large steam turbine generators that results from the difference in growth rates between the turbine rotor and the machine stator (casing).

Measuring Differential Expansion (DE)

The Differential Expansion measurement is made by using two proximity transducers that observe a collar or ramp some distance from the thrust bearing. Typical transducer mounting arrangements that require the 3300 XL 50 mm Transducer's long linear range include:

1. Two transducers observing the same side of a collar.

2. Two complementary input transducers observing opposite sides of a collar, effectively doubling the measurable DE range.

The criteria for selecting a mounting method are the size of the available target, the expected amount of rotor axial movement, and the type of DE target that exists in the machine.  If the collar height is sufficient and the required total measurement range is less than 27.9 mm 1.1 inches, the preferred configuration for redundant measurements is to use two transducers observing the same side of a collar.  When )of total range are required, install the transducers in a complementary fashion on opposite sides of the differential expansion collar or other target material.

Proximitor Sensor 

The 3300 XL 50 mm Proximitor Sensor1 has the same advanced features as all 3300 XL Proximitor Sensors.  Its thin design allows it to be mounted in either a high-density DIN-rail installation or a more traditional panel mount configuration.  Improved RFI/EMI immunity allows the 3300 XL Proximitor Sensor to achieve European CE mark approvals without any special mounting considerations.  This RFI immunity prevents the transducer system from being adversely affected by nearby high frequency radio signals.  SpringLoc terminal strips on the Proximitor Sensor require no special installation tools and facilitate faster, highly robust field wiring connections.

System Compatibility

The 3300 XL 50 mm probe comes in three case & thread configurations to physically replace all standard 7200 50 mm systems (including side and rear exit probes). The standard 7200 style mounting brackets are still available as accessories. In addition, a new bracket to adapt the probe to the 50 mm DE Integral transducer sliding mount base is also available.  The Proximitor Sensor has a 0.394 V/mm (10 mV/mil) output that is identical to that of the 7200 and 50 mm DE Integral systems, which allows customers to upgrade without requiring any changes in the monitor configuration. When upgrading from previous systems, every transducer system component (probe, extension cable, and Proximitor Sensor) must be replaced with 3300 XL 50 mm components.

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