Bently Nevada 330101-00-39-10-02-05 3300 XL 8 mm Proximity Probe

Product information

The 3300 XL 8 mm Proximity Transducer System provides an output voltage that is directly proportional to the distance between the probe tip and the observed conductive surface and can measure both static (position) and dynamic (vibration) values. The system’s primary applications are vibration and position measurements on fluid-film bearing machines, as well as Keyphasor reference and speed measurements. The 3300 XL 8 mm system delivers the most advanced performance in our eddy current proximity transducer systems.

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12 months warranty for all products
Original and new packing
3-5 working days shipping
High efficiency application
Good quality with long life span

Frequently Asked Questions (FAQ)

Q: Can the 330101-00-39-10-02-05 probe be used as a keyphasor sensor to measure rotational speed in the field?
A: Yes. With a response frequency up to 10 kHz, it can be used for keyphasor measurement. The initial gap voltage should be set to -11.0 Vdc to -12.0 Vdc for pulse output.

Q: What are the special hardware requirements for field installation of the 330101-00-39-10-02-05 probe with a full thread?
A: Perpendicular to the shaft must it be installed as a full-thread (“00”) 3.9-inch probe. In deep blind holes, extra care is required, and to 4.5 N·m (40 psi) should the lock nut be tightened.

Q: The 330101-00-39-10-02-05 has a 1.0-meter cable. How do I match the extension cable and preamplifier for it in the field?
A: For a 5-meter system, a 4.0-meter extension cable is required; for 9 meters, an 8.0-meter cable is required. Incorrect lengths can cause impedance mismatch and distort the 200 mV/mil output.

Q: If the opening in the unit casing is not standardized, will the 330101-00-39-10-02-05 probe experience a "side effect"?
A: Yes. Nearby metal can shunt the electromagnetic field and reduce the linear range. No non-target metal should be within a 15 mm (0.6 in) radius of the probe centerline.

Q: What are the consequences for monitoring if the 1.0 meter cable of 330101-00-39-10-02-05 is mistakenly shortened or lengthened on site?
A: System operation can fail. Changing the 1.0-meter cable alters factory-calibrated capacitance and inductance, causing zeroing failure, degraded linearity, or an OOR fault.

Application

Steel Mills (Iron & Steel Plants): Applied to heavy-duty, high-speed rotating equipment such as blast furnace blowers, large rolling mill drive bearings, and high-power dust collection fans for lifecycle health monitoring.

Natural Gas Processing Plants: Serving as critical protection sensors for centrifugal natural gas export compressors to prevent severe machine vibration caused by flow-induced excitation.

Fertilizer Plants: Monitoring the critical high-pressure synthesis gas compressors and refrigeration compressors in ammonia production units to ensure continuous and safe operation under extreme pressure and temperature conditions.

Air Separation Plants: Monitoring the shaft condition of large air separation compressors, such as oxygen and nitrogen compressors, to prevent fires or explosions caused by mechanical friction in high-purity oxygen environments.

Water Treatment Plants (Large Waterworks / Wastewater Treatment Plants): Although generally smaller in scale than the above industries, these sensors are commonly installed on the bearings of high-power centrifugal lift pumps and large blowers for basic condition monitoring.

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