


Part Number: 21000-28-05-00-105-04-026
Model: 21000 Proximity Probe Housing Assemblies
Manufacturer: Bently Nevada
Condition: New & Original in Factory Packing
Factory Warranty: 12 Months
Bently Nevada offers two all-metal Proximity Probe Housing Assemblies forexternal mounting of proximity probes: the 21000 aluminum probe housingassembly, and the 24701 stainless steel probe housing assembly. Thesehousings consist of a dome cover that screws into the body of the housing,threaded ports for conduit connections, a probe sleeve of optional length, 0-rings, a reverse mount proximity probe, a thread seal, optional conduit fittingsand an optional standoff adapter. Use of a proximity probe housing allowsexternal access to the proximity probe and its extension cable, permitting gapadjustment or probe replacement without disassembly of the machine.
Both the 21000 and the 24701 housing assemblies are available in a CanadianStandards Association (CSA) approved version that is rated explosion proof inhazardous areas. In addition, CSA and BASEEFA approved proximity probes canalso be ordered with both 21000 aluminum and 24701 stainless steel housingsfor intrinsically safe applications. Both housings are certified as CSA Type 4enclosures, and both are fully compliant with the American Petroleum Institute's(API) 670 Standard for externally mounted proximity probe housings.
Sleeve length is determined by the location in which the probe and housing willbe installed. The probe lead must be longer than the sleeve. Sleeve lengthslonger than 304 mm (12 inches) require additional sleeve support in order toreduce the vibration associated with unsupported long sleeve lengths. A probesupport/oil seal, P/N 37948-01, is available to support long sleeves goingthrough an inner bearing housing, or the customer or BNC can provide a customsleeve support (see Figure 1. "Proximity Probe Housing Assemblies Dimensionsare in millimetres.
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