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Description：

The Bently Nevada 21000-28-05-15-027-01-02 is an industrial Proximity Probe Housing Assembly developed for the installation and protection of externally mounted proximity probes used in machinery condition monitoring systems. It provides a reliable mechanical interface between the probe and the machine casing while allowing convenient access for inspection, adjustment, and replacement during routine maintenance.

This model is available for applications operating in hazardous locations where explosion protection is required. Selected configurations within the 21000 Series carry CSA certification for hazardous environments and are suitable for intrinsically safe installations when used with compatible monitoring equipment. The housing is also recognized as a CSA Type 4 enclosure, providing dependable protection against dust, moisture, and harsh industrial conditions encountered in process industries.

Specification：

Frequently asked questions

What is the Bently Nevada 21000-28-05-15-027-01-02?

It is an aluminum protective housing assembly designed to shield proximity probes on rotating machinery (e.g., turbines, compressors) from harsh environments.

What is the difference between the 21000 and 24701 models?

The 21000 housing is made of aluminum, whereas the 24701 housing is made of stainless steel.

Can I use a standard 3300 XL reverse-mount probe as a spare inside the 21000?

No. The 21000 housing requires a specific inner probe assembly designed exclusively for housing installations; standard probes will not fit properly.

What is the standard thread size for the housing's conduit entry?The standard entry port is a 3/4-14 NPT thread, used to connect explosion-proof flexible conduits or cable glands.

Product Applications

Power plants: Used for real-time monitoring of shaft vibration and displacement in water turbines, steam turbines, and large generator sets.

Petrochemical refineries: Used for operational safety protection of high-risk, high-pressure rotating equipment such as large centrifugal compressors and hydrocracking pump units.

Iron and steel metallurgical plants: Used for bearing condition monitoring of large blowers, blast furnace blowers, and main motors of rolling mills.

Large waterworks/pumping station plants: Used for vibration early warning of high-power irrigation and drainage pumps and oil pumps.