Best Best Bently Nevada 3500/77M-03-00 176449-07 - Bently Nevada 330850-90-05 3300 XL 25 mm Proximitor Sensor – RuiMingSheng Suppliers and Company

Best Bently Nevada 3500/77M-03-00 176449-07 - Bently Nevada 330850-90-05 3300 XL 25 mm Proximitor Sensor – RuiMingSheng

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Best Bently Nevada 3500/77M-03-00 176449-07 - Bently Nevada 330850-90-05 3300 XL 25 mm Proximitor Sensor – RuiMingSheng Detail:

Description

Manufacture	Bently Nevada
Model	330850-90-05
Ordering information	330850-90-05
Catalog	3300 XL
Description	Bently Nevada 330850-90-05 3300 XL 25 mm Proximitor Sensor
Origin	United States (US)
HS Code	85389091
Dimension	16cm16cm12cm
Weight	0.8kg

Details

Description
The 3300 XL 25 mm Transducer System consists of a separate 25 mm probe, an extension cable, and a 3300 XL 25 mm Proximitor  Sensor. The 0.787 V/mm (20 mV/mil) output gives this system a linear range of 12.7 mm (500 mils). Based on this linear range, the 3300 XL 25 mm Transducer System is suitable for measuring differential expansion (DE) on mid-size to large steam turbine generators caused by 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 two proximity transducers observing a collar or ramp some distance from the thrust bearing. Typical transducer mounting arrangements are:
• Two transducers observing the same side of a collar.
• Two complementary input transducers observing opposite sides of a collar, effectively doubling the measurable DE range.
Two transducers with at least one transducer viewing a ramp on a rotor and the second transducer viewing either a separate ramp or a different location on the rotor to compensate for radial movement. This arrangement adds some error to the measurement, but can measure a longer total DE distance than the complementary measurement.
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 (collar versus ramp). If sufficient collar height is available, two transducers observing the same side of a collar is the preferred
configuration. These two transducers provide redundant measurements.

System Compatibility
The 3300 XL 25 mm probe comes in a large variety of case configurations to physically replace all standard 7200 25 mm, 7200 35 mm and 25 mm DE Integral transducer systems (including side and rear exit probes). The Proximitor Sensor also has an output that is identical to that of the 7200 and 25 mm DE Integral systems, allowing 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 25 mm components.

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