The 330801-28-04-105-00-02 is a 3300 XL 11mm high-pressure probe mounting housing assembly manufactured by Bently Nevada. It is an external mounting bracket system specifically designed for 11mm probes, primarily used to provide high-pressure sealing protection on large machinery and allowing probe adjustment without disassembling the machine.
High-Pressure Sealing
External Adjustability
Material Durability
The design of the PROXPAC XL Proximity Transducer Assembly is similar to our 31000/32000 Proximity Probe Housing Assemblies. The assembly offers the same advantages and features as the 31000 and 32000 housings for accessing and externally adjusting proximity probes. However, the housing cover of the PROXPAC XL Assembly also contains its own 3300 XL Proximitor sensor. This design makes the PROXPAC XL Assembly a completely self-contained proximity probe system, and eliminates the need for an extension cable between the probe and its associated Proximitor sensor. It also eliminates the need for a separate Proximitor housing, as the field wiring connects directly between the monitors and PROXPAC XL Assemblies.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Petroleum Refining
Monitoring axial displacement in reforming compressors by penetrating thick casings while sealing high-pressure process gas.
Natural Gas Pipelines
Monitoring shaft vibration on gas turbine driven centrifugal compressors to prevent mechanical wear.
Thermal Power Generation
Monitoring rotor thermal expansion displacement in the high-pressure cylinders of ultra-supercritical steam turbines.
Nuclear Power
Monitoring non-contact axial clearance on main coolant pumps to ensure the safety of the sealing system.
Air Separation
Monitoring thrust collar displacement by mounting outside the high-pressure chambers of turbo-expanders.
Steel & Metallurgy
Utilizing its 10.5-inch depth to penetrate multi-layer seals at high-speed bearings of blast furnace blowers.
When using the 330801-28-04-105-00-02 high-pressure housing, it is crucial to ensure an 11mm probe is installed internally rather than a standard 8mm probe, and verify that the total system length matches the Proximitor’s calibration. Given its 10.5-inch deep penetration specification, strictly check the verticality and coaxiality of the mounting hole to prevent sleeve damage under pressure or vibration. Additionally, periodically inspect the Viton O-rings to maintain sealing integrity (up to 250 psi), and ensure the external adjustment nuts are securely locked after setting the probe gap to prevent signal drift or medium leakage during operation.