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The 330878-51-00 is a Proximitor Sensor belonging to the 3300 XL 50 mm Proximity Transducer System. It is primarily designed for Differential Expansion (DE) measurement in critical rotating machinery like steam turbines.
Utilizes advanced microelectronic technology
Adopts standard DIN rail mounting method
The Proximitor Sensor's signal processing capability supports paired, complementary system configurations
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).
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 28 mm to 56 mm (1.1 to 2.2 inches) of total range are required, install the transducers in a complementary fashion on opposite sides of the differential expansion collar or other target material.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 330878-51-00 Proximitor Sensor Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Conventional Thermal Power Generation
Monitors rotor differential expansion in large steam turbine generators to prevent collisions between high-pressure rotors and casings.
Nuclear Power Generation
Monitors axial displacement in high/low-pressure cylinders of nuclear steam turbines to ensure safe reactor energy conversion.
Petroleum Refining
Monitors rotor thermal expansion in large rich-gas compressors and flue-gas turbines within catalytic cracking units.
Petrochemical & Ethylene Industry
Monitors axial float and relative casing expansion of cracking gas compressors, the core of million-ton ethylene plants.
Iron, Steel & Metallurgy
Monitors thermal displacement of blast furnace blowers (TRT top-pressure turbines) to avoid friction between blades and stators.
Coal Chemical Industry
Monitors large steam turbine-driven feedwater pumps configured for core gasifier clusters in Coal-to-Liquids (CTL) and Coal-to-Gas plants.
This Proximitor is factory-calibrated for a 5.0-meter total system length. It must be paired exclusively with a 3300 XL 50mm probe and extension cable combination that equals exactly 5 meters, never alter or mix cable lengths.
This sensor operates seamlessly with the 3300 XL 50 mm probe, which sustains harsh steam turbine environments with continuous operation up to 200°C (392°F). The probe features front/rear seals, FluidLoc cables, and specialized high-temperature ClickLoc connectors to prevent environmental contamination.
Yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
How many parts do you have in stock?
We have an extensive stock base consisting of ten thousands of new and discontinued automation parts including those from leading manufacturers such as:Control Systems (DCS, PLC, CNC) ,Panel Controllers,HMI and Display Panels,Drives,Encoders and Resolvers,Power Supplies.
What is the 330878-51-00?
It is a 3300 XL NSV Proximitor Sensor manufactured.
What environments is the 330878-51-00 used in?
It is used in critical rotating machinery (e.g., turbines, compressors) for asset protection and condition monitoring.
How to install and use the 330878-51-00?
Snap it onto a standard DIN rail, connect the matching extension cable and probe, and wire it to the monitor.
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