Overview
Manuals
Principle
Primary Application
Features:
- 3300 XL 50 mm Proximitor Sensor
- 3300 XL 50 mm Proximity Transducer System
- Two transducers observing the same side of a collar
Like all 3300 XL series proximity sensors, the 3300 XL 50mm proximity sensor boasts the same advanced features. Its slim design allows for mounting on high-density DIN rails or using more traditional panel mounting methods. Enhanced RFI/EMI immunity enables the 3300 XL proximity sensor to achieve European CE certification without any special installation. This RFI immunity protects the sensor system from interference from nearby high-frequency radio signals. The SpringLoc terminal block on the proximity sensor allows for faster and safer field wiring without special installation tools.
The large-diameter coil gives the system a maximum linear range of 27.9mm (1100 mil), the longest linear range in our eddy current sensor series. The linear measurement range of the 3300 XL 50 mm sensor system makes it ideal for measuring differential expansion (DE) or rotor expansion (RX) in large steam turbine generators, caused by the difference in expansion rates between the turbine rotor and the generator stator (casing).
The 330878-51-05 Bently Nevada Proximitor Sensor may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330878-51-05 3300 XL 50 mm Proximitor Sensor Manuals(Datasheets), 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. All prices are shown in USD.
The 3300 XL 50 mm probe is available in three housing and thread configurations, physically replacing all standard 7200 50 mm systems (including side-out and rear-out probes). When upgrading from the old system, each sensor system component (probe, extension cable, and proximity sensor) must be replaced with a 3300 XL 50 mm component.
The 50 mm system is designed for the most demanding environments within steam turbines. Its main applications include:
Differential Pressure Monitoring: Measuring the relative expansion between the turbine's rotating shaft and stationary casing during startup and shutdown. This is crucial for preventing internal axial contact caused by thermal expansion.
Demanding Steam Environments: Unlike standard 8 mm probes, the 50 mm probe can withstand extreme temperatures and high-pressure steam conditions up to 200°C (intermittently up to 250°C).
Upgrading Legacy Systems: It serves as a modern, rugged replacement for older 7200 Series 50 mm and 130713 DE sensor systems, offering enhanced moisture resistance and accuracy.
