330709-000-050-10-12-05

Bently Nevada 330709-000-050-10-12-05 is a 3300 XL 11 mm proximity probe. The M16 x 1.5 case has zero unthreaded length and a 50 mm overall case length. The metric mounting thread permits a maximum engagement of 24 mm; a longer threaded engagement can bind even when the nominal thread matches. Its 1.0 m unarmored lead uses FluidLoc construction to limit liquid migration inside the cable. Connection option 12 provides a miniature coaxial ClickLoc connector without the separate connector protector. FluidLoc cable does not establish a pressure seal at the machine penetration or protect an exposed connector by itself. Mechanical support and environmental protection remain part of the installation design.

The probe works with a compatible 3300 XL 11 mm extension cable and Proximitor Sensor. Under the specified AISI 4140 target, -24 V DC supply, 10 kilohm load and 2.5 mm gap conditions, the complete system provides a nominal 3.94 V/mm scale factor and 4.0 mm linear span. Typical frequency response is 0-8 kHz at +0/-3 dB, subject to the field-wiring conditions.

For a disconnected 1.0 m probe, center-to-outer conductor resistance is 5.9 +/- 0.5 ohms. This is a continuity reference, not a substitute for checking system calibration. The electrical operating range is -52 to +177 deg C, while exposure below -34 deg C can cause premature pressure-seal failure; electrical and containment limits must be assessed separately.