External probe adjustment
The sleeve and standoff keep the probe accessible from outside the machine case, allowing the target gap to be adjusted without opening the machine.
01
Product Overview
Bently Nevada 330801-28-20-050-03-02 is a metric PROXPAC XL proximity transducer assembly that places a 3300 XL 8 mm Proximitor Sensor inside a weather-resistant housing and accepts the selected probe at the stainless-steel sleeve. The assembly keeps the sensing electronics close to the machine while the probe establishes the non-contact eddy-current field at the target.
Inside Bently Nevada 330801-28-20-050-03-02, the probe signal enters the enclosed Proximitor Sensor before the conditioned voltage leaves through the field-wiring terminals. The 200 mm standoff moves the housing away from the machine surface, while the 50 mm penetration setting positions the probe tip through the mounting interface.
Mechanical sealing on Bently Nevada 330801-28-20-050-03-02 is organized by the fitting and mounting codes: the metric housing configuration uses the documented fitting set, and the 3/4-14 NPT mounting thread secures the sleeve to the machine. The probe, sleeve, standoff and enclosure therefore act as one installed measurement path rather than independent interchangeable pieces.
02
Technical Specifications
| Technical Item | Specification |
|---|---|
| Brand | Bently Nevada |
| Model | 330801-28-20-050-03-02 |
| Product Name | PROXPAC XL metric proximity transducer assembly |
| Country | United States |
| Probe selection code | 28 = 3300 XL 8 mm probe with Multiple Approvals |
| Standoff adapter | 20 = 200 mm |
| Probe penetration | 050 = 50 mm |
| Fitting code | 03 = metric housing fitting and cable-seal set |
| Mounting thread | 02 = 3/4-14 NPT |
| Integrated electronics | 3300 XL 8 mm Proximitor Sensor |
| System linear range | 2.0 mm (80 mil) |
| Nominal scale factor | 7.87 V/mm (200 mV/mil) |
| Frequency response | 0 to 10 kHz |
| Housing rating | IP66 |
| Housing material | Polyphenylene sulfide enclosure; stainless-steel probe sleeve |
03
Product Functions
Bently Nevada 330801-28-20-050-03-02 combines the probe-access hardware, local signal conditioning and monitor-side field connection in one PROXPAC XL assembly.
Local signal conditioning
The probe response enters the 3300 XL 8 mm Proximitor Sensor inside the housing, eliminating the separate extension-cable run between those two components.
Monitor-side handoff
Negative supply, common and conditioned output leave the enclosure through the field terminals, so the monitor receives the converted voltage rather than the raw probe impedance.
04
Installation Highlights
The PROXPAC XL assembly is installed in a controlled order because its mechanical reach must be fixed before the enclosure is sealed and electrically checked.
Establish the mounting geometry
Confirm the 3/4-14 NPT machine interface, 200 mm standoff and 50 mm penetration before inserting the sleeve; align the housing without using its cover to force the thread.
Set the probe and close the entries
Position the probe against the conductive target, secure the sleeve, route the field conductors and fit the coded cable hardware and unused-entry seals.
Energize and verify the channel
Apply the documented Proximitor supply, confirm static gap voltage and monitor response, then close the enclosure and repeat the voltage check after final tightening.
05
Frequently Asked Questions
01How should the 200 mm standoff on Bently Nevada 330801-28-20-050-03-02 be checked before installation?
Bently Nevada 330801-28-20-050-03-02 requires the standoff to be measured as part of the installed sleeve geometry; confirm the mounting face, penetration reference and available enclosure clearance before tightening the 3/4-14 NPT interface.
02Why can Bently Nevada 330801-28-20-050-03-02 show an incorrect gap after the housing is tightened?
On Bently Nevada 330801-28-20-050-03-02, tightening can change probe position if the sleeve or standoff is not independently supported. Recheck the mechanical gap and the Proximitor output after final torque.
03What field wiring is needed for Bently Nevada 330801-28-20-050-03-02?
Bently Nevada 330801-28-20-050-03-02 uses the integrated Proximitor Sensor field terminals for negative supply, common and proportional output. Keep the shield and return arrangement consistent with the connected monitor input.
04Can the probe in Bently Nevada 330801-28-20-050-03-02 be treated as a stand-alone sensor?
No. Bently Nevada 330801-28-20-050-03-02 is calibrated around a 3300 XL 8 mm probe and its integrated Proximitor Sensor; the probe response is not the conditioned monitor signal.
05What should be inspected if Bently Nevada 330801-28-20-050-03-02 becomes unstable after closing the cover?
For Bently Nevada 330801-28-20-050-03-02, inspect the internal probe connection, cable strain, shield termination and cover clearance, then compare the gap voltage with the cover open and closed.
06How is moisture protection preserved on Bently Nevada 330801-28-20-050-03-02?
Bently Nevada 330801-28-20-050-03-02 retains its enclosure protection only when the coded fittings, cable seal and cover are installed correctly and unused entries remain sealed.
06
Company Profile
Moore Automation
https://www.mvme.cn/Moore Automation supplies industrial automation and machinery-monitoring references across PLC, DCS, HMI, I/O, drives and condition-monitoring product families.
Each enquiry keeps the manufacturer, complete model, quantity and destination together so the technical and commercial record remains continuous.
Product scopeControl, monitoring and field hardware
Record continuityModel, quantity and destination stay linked
Multi-brand rangeIndustrial automation brands in one reference scope
07
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