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Technical specifications for 21000-00-00-00-41-04-02
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:21000-00-00-00-41-04-02
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Estimated shipping dimensions:60x8.5x8.5cm
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Weight:1.44 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Probe with Connector:Probe not required
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Probe Cable Length:Probe cable not required
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Standoff Adapter:No standoff adapter
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Probe Penetration:4.1 in (104 mm)
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Fittings:One 3/4-14 NPT plug only
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Mounting Thread:3/4-14 NPT
Information
Overview
Manuals
Common Applications
Product Precautions
The 21000-00-00-00-41-04-02 is an industrial-grade, externally mounted proximity probe housing assembly supplied in an empty enclosure configuration with no probe or cable pre-installed, allowing the separate installation of a compatible reverse-mount sensor based on field requirements.
- A probe sleeve of optional length
- A reverse mount proximity probe
- A dome cover that screws into the body of the housing
The physical configuration of this specific part number delivers a 4.1-inch (104 mm) probe penetration sleeve depth and a 3/4-14 NPT tapered pipe mounting thread for direct machine casing installation without a standoff adapter, complete with dedicated sealed conduit and cable gland fittings. The paramount technical advantage of this assembly is its online serviceability, enabling safe insertion, micro-gap calibration adjustment (typically to -10 VDC), or complete replacement of the internal sensor from the outside while the machinery remains fully operational, serving as a critical asset protection enclosure component for continuous-process heavy industries.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 21000-00-00-00-41-04-02 Proximity Probe Housing Assembly Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Thermal Power Generation
Installed outside the bearing pedestals of large conventional steam turbine generator sets to protect proximity probes that monitor shaft radial vibration and axial displacement.
Petroleum Refining
Used outside the casings of critical high-risk, high-speed centrifugal compressors in hydrocracking and catalytic cracking units as a protective shield for externally adjustable probes.
Offshore Oil & Gas Drilling Platforms
Provides moisture-proof and explosion-proof sealing protection for critical Keyphasor (speed) sensors on water injection pumps and gas turbine shaft lines in salt spray and confined spaces.
Hydroelectric Power Generation
Used outside upper, lower, and turbine guide bearing housings of large vertical hydro-generators to prevent oil mist and moisture from eroding runout-monitoring probes.
Iron & Steel / Rolling Mills
Provides dust-proof enclosure protection in the harsh, dusty environments of large blast furnace blowers and heavy-duty rolling mill gearboxes to ensure precise rotor alignment measurements.
Since this specific part number is supplied as an empty enclosure configuration with no probe pre-installed, users must separately install a compatible reverse-mount sensor (such as a 3300 XL 8 mm reverse-mount probe). During external installation and online maintenance, strict compliance with intrinsically safe codes and mechanical torque specifications for the 3/4-14 NPT tapered pipe threads is required to prevent stripping the aluminum housing.
Given its 4.1-inch penetration depth, when inserting, adjusting the internal probe gap (typically calibrated to -10 VDC), or replacing the sensor while the machinery is running, the process must be conducted extremely slowly to avoid catastrophic physical contact between the probe tip and the high-speed rotating shaft. Furthermore, verify that static seals like O-rings at the casing interface remain intact, and securely tighten the external conduit and cable gland combination to maintain its CSA Type 4 (IP66) weatherproof, dustproof, and oil-leakage protection ratings.
Given its 4.1-inch penetration depth, when inserting, adjusting the internal probe gap (typically calibrated to -10 VDC), or replacing the sensor while the machinery is running, the process must be conducted extremely slowly to avoid catastrophic physical contact between the probe tip and the high-speed rotating shaft. Furthermore, verify that static seals like O-rings at the casing interface remain intact, and securely tighten the external conduit and cable gland combination to maintain its CSA Type 4 (IP66) weatherproof, dustproof, and oil-leakage protection ratings.
Alternative Names
21000 00 00 00 41 04 02
21000-00-00-00-41-04-O2
21000-00-00-00-41-O4-02
21000-00-00-0O-41-04-02
21000-00-00-O0-41-04-02
21000-00-0O-00-41-04-02
21000-00-O0-00-41-04-02
21000-0O-00-00-41-04-02
21000-O0-00-00-41-04-02
2100O-00-00-00-41-04-02
210O0-00-00-00-41-04-02
21O00-00-00-00-41-04-02
21OOO-OO-OO-OO-41-O4-O2
2I000-00-00-00-4I-04-02
21IOOO-OO-OO-OO-4I-O4-O2
21000-14-00-00-41-04-02
21000-16-00-00-41-04-02
21000-26-00-00-41-04-02
Technical notes
Bently Nevada 21000-00-00-00-41-04-02 is fully compliant with the API 670 Standard for externally mounted proximity probe housings. The paramount technical advantage of this assembly is its online serviceability—it enables safe insertion, micro-gap calibration adjustment (typically to -10 VDC), or complete replacement of the internal sensor from the outside while the machinery remains fully operational, serving as a critical asset protection enclosure component for continuous-process heavy industries.
FAQ View All FAQ
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What kind of device is Bently Nevada 21000-00-00-00-41-04-02?It is an industrial-grade, externally mounted proximity probe housing assembly consisting of an aluminum body and a 304 stainless steel sleeve, with no probe pre-installed inside this specific configuration.
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What is the primary purpose of 21000-16-10-00-054-04-02?It is installed on the exterior casing of large machinery to protect precision vibration probes subsequently installed by the user from physical impacts or fluid erosion in harsh industrial environments.
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How do you correctly use the 21000-00-00-00-41-04-02 assembly to measure vibration?The user must purchase and install a compatible proximity probe separately, thread the whole assembly into the case, and perform online micro-adjustments of the probe depth from the outside until the voltage is correct, then lock it in place.
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Which probes can be installed inside the 21000-00-00-00-41-04-02 assembly?It is generally compatible with Bently Nevada 3300 XL 8 mm, 3300 5 mm, or non-XL 3300 8 mm reverse-mount proximity probes.
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What industry standard does this 21000-00-00-00-41-04-02 assembly comply with?As an externally mounted probe protective enclosure, it fully complies with the American Petroleum Institute's API 670 Standard in terms of mechanical strength and sealing structure.
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