3300 XL 8 mm Components 

One-meter systems do not require an extension cable.Proximitor sensors are supplied by default from the factory calibrated to AISI 4140 steel. Calibration to other target materials is available upon request.When considering this transducer system for tachometer or overspeed measurements, consult the Bently Nevada Applications Note titled Considerations when using Eddy Current Proximity Probes for Overspeed Protection Applications.

3300 XL 8 mm components are both electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components. Although the packaging of the 3300 XL Proximitor Sensor differs from its predecessor, its design fits the same 4-hole mounting pattern when used with the 4-hole mounting base and will fit within the same mounting space specifications, provided the minimum permissible cable bend radius is observed.

Mixing XL and non-XL 3300-series 5 mm and 8 mm system components limits overall system performance to the specifications of the non-XL 3300 5 mm and 8 mm Transducer System. The 3300-series 5 mm probe (refer to Document 141605) uses smaller physical packaging but does not reduce side view clearances or tip-to-tip spacing requirements compared to an 8 mm probe. It is intended for applications where physical, not electrical, constraints preclude using an 8 mm probe. For narrow side view applications, use the 3300 NSv Proximity Transducer System (refer to Document 147385).

8 mm probes provide a thicker encapsulation of the probe coil in the molded PPS plastic probe tip, resulting in a more rugged probe. The larger diameter of the probe body also provides a stronger, more robust case. Whenever possible, 8 mm probes are recommended for optimal robustness against physical abuse.Each 3300 XL extension cable includes silicone tape, which can be used as an alternative to connector protectors. Silicone tape is not recommended for applications where the probe-to-extension cable connection will be exposed to turbine oil.