330102-00-40-10-02-00 BENTLY

1. One-metre systems do not use an extension cable.

2. Proximitor sensors are supplied by default from the 

factory calibrated to AISI 4140 steel. Calibration to 

other target materials is available upon request.

3. Consult Bently Nevada* Applications Note, 

Considerations when using Eddy Current Proximity 

Probes for Overspeed Protection Applications, when 

considering this transducer system for tachometer or 

overspeed measurements.

Description: 

4. 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 in the same 4-hole 

mounting pattern when used with the 4-hole 

mounting base, and will fit within the same mounting 

space specifications (when minimum permissible 

cable bend radius is observed).

5. Mixing XL and non-XL 3300-series 5 mm and 8 mm 

system components limits system performance to the 

specifications for the non-XL 3300 5 mm and 8 mm 

Transducer System.

6. The 3300-series 5 mm probe (refer to Specifications 

and Ordering Information p/n 141605-01) uses 

smaller physical packaging, but does not reduce the 

side view clearances or tip-to-tip spacing 

requirements as compared to an 8 mm probe. It is 

used when physical (not electrical) constraints 

preclude the use of an 8 mm probe. When your 

application requires narrow side view probes, use the 

3300 NSv* Proximity Transducer System (refer to 

Specifications and Ordering Information p/n 147385-

01). 

7. 8 mm probes provide a thicker encapsulation of the 

probe coil in the molded PPS plastic probe tip. This 

results in a more rugged probe. The larger diameter 

of the probe body also provides a stronger, more 

robust case. We recommend that you use 8 mm 

probes when possible to provide optimal robustness 

against physical abuse.

8. Each 3300 XL extension cable includes silicone tape 

that you can use instead of connector protectors. We 

do not recommend silicone tape for applications that 

will expose the probe-to-extension cable connection 

to turbine oil.

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