Description
Bently Nevada 330780‑50‑CN
Technical Specifications: Total transducer‑system length: 5.0 m Installation style: cabinet panel‑mount Scale factor: 3.94 V/mm (100 mV/mil) Linear measuring range: 0.5 mm‑4.5 mm Frequency response: DC‑8 kHz Power‑supply requirement: −17.5 Vdc ~ −26 Vdc (without intrinsic‑safety barrier) Maximum working current: 12 mA Output impedance: 50 Ω Certification: CN hazardous‑area approval
Functional Features: Processes signal input from 3300 XL 11 mm‑series proximity probe and matched extension‑cable assembly Compact panel‑mount mechanical‑form factor Enhanced RFI‑EMI electromagnetic‑interference‑suppression capability Factory calibrated for AISI 4140 steel reference‑target material Provides simultaneous static‑position and dynamic‑vibration analog‑signal output Complies with API 670 machinery‑protection‑system standard Hazardous‑area certified for deployment within explosive‑gas‑risk industrial zones
Application Scenarios: Signal‑processing hardware supporting 11 mm proximity‑probe channels for radial‑shaft‑vibration, axial‑displacement and Keyphasor rotational‑signal measurement. Installed inside instrument cabinets for turbine, large‑compressor and generator machinery‑protection systems located within power‑plant, oil‑gas and petrochemical hazardous‑area sites.
Performance Parameters: Operating‑ambient‑temperature range: −52 °C ~ +100 °C Storage‑temperature range: −52 °C ~ +105 °C Power‑supply sensitivity: less than 2 mV/V Maximum relative humidity: 93 % non‑condensing Linearity tolerance: ±10 % over full linear measuring range Unit weight: 0.22 kg
Material Composition: Main housing: A380 aluminum‑alloy casting Internal circuit substrate: high‑grade industrial‑application PCB Metal‑terminal parts: nickel‑plated copper‑alloy Insulating components: high‑temperature‑resistant engineering‑plastic Panel‑mount sealing‑gasket: synthetic‑rubber compound
Structural Features: Rectangular panel‑mount housing outline Front‑panel status‑indicator function Rear‑side screw‑type wiring terminals Integral electrical‑isolation base structure Compact mechanical dimensions for cabinet‑panel installation Metal housing delivers electromagnetic‑shielding performance Panel‑mount sealing‑gasket guarantees cabinet‑panel sealing‑performance
Working Principle: Internal high‑frequency oscillation circuit provides excitation signal to connected proximity‑probe coil. Eddy‑current‑caused probe‑coil‑impedance variation is detected by internal measuring‑circuit module. Circuit converts impedance fluctuation into stable analog DC‑voltage output directly proportional to gap‑distance value between probe tip and metal‑target surface.
Installation Requirements: Mount unit onto instrument‑cabinet front‑panel Reserve surrounding ventilation clearance for sensor heat‑dissipation Adopt tri‑axial shielded cable for field‑signal wiring Input power‑supply voltage must strictly follow rated‑range specification Signal‑wiring routes maintain physical separation from high‑voltage power‑wiring Tighten panel‑mount fixing‑screws completely Terminal wiring must maintain firm connection status without loose contact For CN‑certified version, strictly execute hazardous‑area wiring‑specification requirements
