Description
Bently 3500/77M‑03‑00 (143729‑01)
- Key Features: Four independent high‑speed pressure input channels; internal termination design without extra external I/O hardware; supports authorized high‑frequency cylinder pressure transducers; each channel calculates multiple derived variables including peak pressure, minimum pressure, compression ratio, rod reversal degree; per‑variable configurable Alert and Danger alarm setpoints; buffered transducer output ports for waveform debugging; hot‑swap maintainability; front‑panel multi‑color LED status indicators; compliant with API‑618 reciprocating compressor monitoring requirements.
- Technical Specifications & Performance Parameters
- Input channel quantity: 4 high‑speed pressure acquisition channels
- Typical power consumption: 9.2 W
- Operating temperature: ‑30 ℃ ~ +65 ℃
- Storage temperature: ‑40 ℃ ~ +85 ℃
- Transducer excitation supply: 23.0 Vdc ±0.8 Vdc, 24.5 mA current‑limit per channel
- Buffered output impedance: 550 Ω
- Weight: 0.91 kg
- Material Composition: FR‑4 high‑speed signal multilayer printed‑circuit board; high‑speed sampling FPGA chip; high‑precision signal conditioning circuit components; gold‑plated back‑plane edge connector; metal front‑panel with multi‑color LED indicators; metal electromagnetic shielding housing for high‑speed sampling circuits; reinforced plastic mechanical locking latch assembly.
- Structural Features: Full‑height plug‑in rack‑module mechanical construction; front‑panel LED indicators for power‑supply, bus communication, bypass and channel fault status; rear‑side gold‑plated edge connector connects with rack back‑plane bus; field pressure transducer wiring connects directly to internal integrated termination terminals on module rear section; front‑panel coaxial buffered output connectors; mechanical latch secures module position in rack slot.
- Working Principle: Module provides regulated excitation power supply to field‑mounted cylinder pressure transducers. Dynamic pressure variation converts into analog electrical signal by transducer. On‑board high‑speed FPGA captures continuous pressure waveform data. Internal algorithm computes peak pressure, suction pressure, discharge pressure, compression ratio, rod reversal and other thermodynamic parameters. Calculated values compare against programmed alarm thresholds. Measurement data and alarm flags broadcast onto rack back‑plane bus for relay output and upper‑level System 1 diagnostic software transmissionBaker Hugh….
- Application Scenarios: On‑line cylinder pressure monitoring for petrochemical reciprocating compressors; reciprocating compressor valve fault and packing leakage early diagnosis; compressor thermodynamic performance real‑time evaluation; reciprocating machinery protection system complying with API‑618 standard; gas‑processing plant reciprocating unit condition‑monitoring racks.
- Installation Requirements: Insert full‑height cylinder‑pressure monitor module into assigned rack slot; fully lock mechanical latch; connect field pressure transducer cables directly to module internal termination terminals; configure transducer parameters, pressure range and alarm thresholds inside 3500 rack configuration software; perform pressure calibration test to validate waveform and derived‑parameter accuracy.
- Usage Notes: Wear ESD anti‑static wrist strap during module installation and replacement; strictly implement official maintenance procedure for hot‑swap operation; only use Bently‑approved cylinder pressure transducers matching module specification; avoid strong vibration and oil‑mist contamination on module front‑panel connectors; preserve full rack‑configuration backup file after completing parameter commissioning.
