Description
Bently Nevada 21000-16-10-00-256-13-02
Technical Specifications:
- Product Series: 21000 Series Probe Housing
- Housing Material: Aluminum construction (21000 series) or stainless steel (24701 series)
- Probe Type: Reverse-mount eddy current proximity probe
- Certification: Suitable for hazardous area intrinsically safe applications
- Sealing: O-ring sealed for environmental protection
Functional Features:
- External access to probe for gap adjustment without machine disassembly
- Hazardous area rated for explosion-proof environments
- Available in aluminum (21000) and stainless steel (24701) housing materials
- Supports reverse-mount probe installation for applications where front access is limited
- Conduit connection port for cable routing protection
- O-ring sealed design for moisture and contaminant protection
Application Scenarios:
- Radial vibration monitoring on compressors, turbines, and pumps
- Axial position monitoring where external probe access is required
- Keyphasor signal generation on rotating machinery
- Applications in hazardous area classifications requiring explosion-proof enclosures
- Installations where periodic probe replacement without machine teardown is necessary
Performance Parameters:
- Housing Material: Aluminum (21000) or stainless steel (24701)
- Probe Compatibility: 3300 XL 8mm or 11mm reverse-mount probes
- Environmental Protection: O-ring sealed housing with conduit connection
- Hazardous Area Rating: Intrinsically safe certified
Material Composition:
- Housing Body: Cast aluminum (21000) or machined stainless steel (24701)
- Dome Cap: Threaded metal cap with O-ring seal
- Probe Sleeve: Stainless steel protective sleeve
- Seals: O-ring seals for environmental protection
- Probe: Reverse-mount eddy current proximity probe with PPS tip material
Structural Features:
- Cylindrical housing body with threaded dome cap
- Threaded conduit port for cable entry protection
- Internal probe sleeve for probe alignment and protection
- Locknut with predrilled safety wire holes
- Optional insulation adapter for electrically isolated mounting
Working Principle: The housing assembly provides a mechanically rigid and environmentally sealed mounting point for the eddy current proximity probe. The probe is installed in reverse-mount configuration within the housing, with the probe tip facing the rotating shaft through the housing opening. The dome cap secures the probe in position while the O-ring seals prevent moisture and contaminants from entering. The extension cable exits through the conduit port, providing a protected path to the proximitor. Gap adjustment is performed by rotating the probe within the housing threads while monitoring the proximitor output voltage.
Installation Requirements:
- Housing must be mounted on a rigid surface with adequate structural support
- Probe tip must face the target shaft surface with proper clearance
- Conduit connection must be properly sealed to maintain environmental protection
- O-rings must be inspected and replaced if damaged during installation
- Thread sealant must be applied to housing threads per manufacturer specifications
Usage Notes:
- Verify housing material compatibility with the installation environment (aluminum for general use, stainless steel for corrosive environments)
- Ensure O-ring seals are properly seated before tightening the dome cap
- Do not over-tighten the dome cap to avoid damaging the O-ring or probe
- Use safety wire through predrilled holes on the locknut to prevent loosening due to vibration
- Confirm intrinsically safe certification requirements are met for hazardous area installations
- Periodically inspect housing seals and conduit connections for integrity
