Bently Nevada 21000-34-05-00-015-04-02 Proximity Probe Housing Assemblies

Product information

To externally mount proximity probes, use one of these all-metal Proximity Probe Housing Assemblies: 21000 aluminum probe housing assembly, 24701 stainless steel probe housing assembly .The 21000, 24701, and 164818 Proximity Probe Housing Assemblies consist of the following parts: A dome cover that screws into the body of the housing; Threaded ports for conduit connections; A probe sleeve of optional length; O-rings; A reverse mount proximity probe；A thread seal; Optional conduit fittings; An optional standoff adapter. 

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Frequently Asked Questions (FAQ)

Q: Does the protective case base include a standoff adapter when using 21000-34-05-00-015-04-02?
A: No. Code "00" indicates no standoff adapter; the metal base of the protective case will be directly flush against the outer surface of the machine during installation.

Q: What specifications of lead-in holes or conduit ports are provided for model 21000-3405-00-015-04-02?
A: Code "04" indicates that this component comes with only a single 3/4-14 NPT threaded blind plug on the side of the housing; the explosion-proof conduit fittings or cable sealing glands must be sourced by the user on-site.

Q: What is the specification of the bottom master thread for the protective box 21000-34-05-00-015-04-02 used for engagement and fixation to the machine housing?
A: The code "02" at the end indicates that the main mechanical connection thread required for fixing the protective box base is a 3/4-14 NPT tapered pipe thread.

Q: How well does the physical shape of the 21000-34-05-00-015-04-02 housing withstand harsh environments under heavy vibration and high salt spray conditions?
A: This protective box is made of die-cast aluminum (with epoxy resin powder coating) for the dome cover and base, with stainless steel for the penetration parts. It is explosion-proof certified and meets CSA Type 4 and many other explosion-proof standards.

Q: What is the length of the built-in probe tail cable included with model 21000-34-05-00-015-04-02?
A: Code "05" indicates that the reverse-mount probe is equipped with a standard 0.5-meter (20-inch) coaxial cable with a tail cable.

Application

Power Plants: Monitors shaft vibration and displacement of large steam turbine generators, feedwater pumps, and fans.

Hydropower Plants: Installed on turbine-generator shafts and thrust bearings to prevent mechanical wear and failures.

LNG Plants: Provides continuous monitoring for key refrigeration compressors and high-pressure pumps.

Large Steel Plants: Monitors bearing operation of blast furnace blowers and TRT systems.

Air Separation Plants: Monitors centrifugal air compressors supplying high-pressure gas for steel and chemical industries.

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