Description
Bently Nevada 21504-000-008-05-02
- Key Features: Non‑contact measurement principle; standard 8 mm probe tip dimension; stable linear output range; built‑in 0.5 m integral cable; threaded standard mounting structure; anti‑interference coil assembly; compatible with full set 7200 proximitor units; supports continuous long‑term operation under heavy‑duty industrial environment.
- Technical Specifications & Performance Parameters
- Probe tip diameter: 8 mm
- Integral cable length: 0.5 m
- Linear measuring range: 0‑2.0 mm
- Nominal sensitivity: 7.87 V/mm
- Operating temperature range: ‑40 ℃ ~ +85 ℃
- Storage temperature: ‑55 ℃ ~ +125 ℃
- Frequency response: 0‑10 kHz
- Weight: 0.23 kg
- Thread specification: 3/4‑16 UNF‑2A standard mounting thread
- Material Composition: Stainless steel probe housing and threaded mounting body; high‑stability wound copper sensing coil; high‑temperature resistant PTFE insulation for integral cable; metal shielding braid; epoxy sealed internal assembly; stainless steel connector shell.
- Structural Features: Cylindrical compact probe body; external male thread for direct mounting into probe bracket; epoxy hermetically sealed internal coil chamber; integral coaxial cable extends from rear side of probe; ends with standard 5‑pin microdot connector for connecting extension cable.
- Working Principle: The proximitor supplies high‑frequency alternating current to the internal sensing coil of probe. Alternating magnetic field generates eddy‑current effect on conductive target shaft surface. Impedance variation of probe coil changes along with clearance gap between probe tip and shaft target. Proximitor converts impedance change into linear DC gap‑voltage output for vibration and displacement calculation.
- Application Scenarios: Shaft relative vibration monitoring for steam turbines; axial thrust displacement measurement for centrifugal compressors; rotating machinery retrofitting projects; spare‑part replacement for existing 7200 monitoring systems; pump and blower rotor status monitoring.
- Installation Requirements: Screw the probe into dedicated mounting bracket with proper torque value; keep probe tip perpendicular to shaft target surface; maintain proper initial gap within linear measuring range; connect microdot connector to matching extension cable; separate sensor cables from high‑power motor and inverter power cables; implement single‑end shielding grounding for coaxial cables.
- Usage Notes: Never scratch or impact probe tip coil surface; strictly match full set of probe‑extension‑proximitor system; do not bend coaxial cable with excessive small radius; keep microdot connectors clean and free of oil and dust; avoid over‑torque during probe mounting; inspect connector tightness during regular equipment overhaul.
