Description
Bently Nevada 3300/65
- Technical & Performance Parameters:
- Probe input quantity: 2 proximity probe inputs for one measurement point
- Supported transducer: 3300 series eddy‑current probe system
- Measuring range: 0‑80 mil peak‑to‑peak
- Frequency response: 4 Hz‑4000 Hz
- Power consumption: Dependent on backplane power supply of 3300 rack
- Operating temperature: ‑40 °C ~ +70 °C
- Material Composition: Metal front panel with multi‑LED status indication; multilayer industrial PCB containing dual‑channel signal conditioning circuit, voting logic processing circuit, alarm relay drive circuit; metal latch for rack installation.
- Structural Characteristics: Single‑width plug‑in module for 3300 rack chassis. Front panel includes channel status, probe fault LED indicators. Rear edge connector connects backplane power supply, two probe signal inputs, alarm bus and analog output signals. Hot‑swap supported.
- Working Principle: Receives gap signals from two independent eddy‑current probes installed on identical measurement location. Internal logic judges validity of each probe signal. Executes pre‑configured voting logic to select valid measurement value. Compares final measurement value against alarm thresholds to trigger relay output. Outputs selected measurement value via analog channel for external acquisition.
- Application Scenarios: High‑reliability protection points for steam turbines and large compressors, such as thrust position monitoring and shaft vibration monitoring. Applied in occasions where single‑sensor failure must not trigger false machine trip. Widely used for critical machinery in power plants and petrochemical plants.
- Installation Requirements: Mount in 3300 standard rack slot. Two sets of proximity probe systems shall be correctly wired to corresponding channel terminals. Configure module voting‑logic jumpers according to site protection requirement. Keep probe cables away from high‑energy interference cables. Ensure good heat dissipation for rack cabinet.
- Usage Notes: Two probes must be physically installed at same measuring position. Perform individual channel check during commissioning. If one probe fails, module can continue working with valid probe signal. Manual reset is required for latched alarms after fault removal. Do not arbitrarily modify internal jumpers without technical documentation reference.
