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The Bently Nevada 330704-020-100-90-02-00 is a 3300 XL 11 mm Proximity Probe designed for use as part of the 3300 XL 11 mm Transducer System. When used together with the corresponding 3300 XL 11 mm Extension Cable and 3300 XL 11 mm Proximitor® Sensor, it forms a complete transducer system for non-contact proximity measurement and machinery condition monitoring.

The 3300 XL 11 mm Proximity Probe is available in a variety of probe case configurations, including armored and unarmored versions with 1/2-20, 5/8-18, M14 × 1.5, and M16 × 1.5 probe threads. In addition, the reverse mount 3300 XL 11 mm Proximity Probe is supplied as standard with either 3/8-24 or M10 × 1 threads to accommodate different installation requirements.

Frequently Asked Questions

What is the Bently Nevada 330704-020-100-90-02-00?

It is a 3300 XL series 11mm proximity probe used for non-contacting vibration, displacement, and speed measurements on rotating machinery.

What is the measurement range of this probe?

The 3300 XL 11mm probe system typically offers a linear range of 4.0 mm (160 mils), double that of the 8mm system.

What is the supply voltage required for the associated Proximitor?

The system requires a negative DC supply voltage, typically -24 Vdc.

What is the thread size of the 330704 probe body?

The standard thread type for the 330704 series body is M14 x 1.5 (metric threads).

Product Applications

Power Industry: Widely used in large steam turbine generator sets in thermal and nuclear power plants, and hydroelectric generator sets in hydroelectric power plants, serving as key sensors for monitoring unit operating status and providing overspeed/trip protection.

Oil and Gas: Used in high-power centrifugal compressors, reciprocating compressors, and natural gas-driven turbines in long-distance gas pipeline pressurization stations, offshore drilling platforms, and liquefied natural gas (LNG) receiving terminals.

Petrochemical Industry: Deployed in core power equipment such as large cracked gas compressors, fans, and high-pressure pumps in oil refineries and ethylene plants to prevent huge economic losses and safety accidents caused by unplanned shutdowns.

Heavy Industry and Metallurgy: Used in blast furnace blowers and large rolling mill shafts in steel plants, as well as large rotary kilns and special fans in cement plants.