Description
Bently 3500/77M‑04‑00 | Part Number:143737‑01
Technical Specifications:
- Channel Quantity:4 cylinder pressure measurement channels
- Supported Transducer: Bently approved cylinder pressure transducer
- Power Consumption:11 Watts nominal
- Operating Temperature:0°C ~ +60°C
- Storage Temperature:‑40°C ~ +85°C
- Rack Slot Occupation:2 slots
- Certifications:SIL2, CE, UL, ATEX hazardous area certification Functional Features:
- Measures maximum pressure, minimum pressure, suction pressure, discharge pressure, compression ratio
- Calculates peak rod compression, peak rod tension, rod reversal degree for reciprocating compressor diagnosis
- Cooperates with multi‑event Keyphasor signal to complete crank‑angle synchronous pressure acquisition
- User‑programmable alarm thresholds for each calculated parameter
- Built‑in transducer fault diagnosis function
- Channel bypass function for maintenance
- Alarm outputs can trigger 3500 relay modules for protection trip
- Supports data uploading to System 1 condition monitoring software for deep failure diagnosis Application Scenarios:
- API‑618 standard reciprocating compressors in oil refinery and petrochemical plant
- Natural gas pipeline reciprocating compressor units
- Reciprocating compressor equipment needing cylinder pressure online monitoring and fault diagnosis Performance Parameters:
- Pressure Measurement Accuracy: ±1% full scale
- Crank‑angle Synchronization Resolution:0.5 degree
- Sampling Rate: High‑speed synchronous sampling synchronized with Keyphasor signal Material Composition:
- Front panel: Oxidized aluminum alloy
- Main circuit board: Multi‑layer FR‑4 fire‑retardant PCB with high‑speed sampling circuit
- Shield housing: Cold‑rolled steel anti‑vibration and anti‑EMI shell
- Backplane bus connector: Gold‑plated industrial connector Structural Characteristics:
- Double‑slot plug‑in module for 3500 rack
- Front panel LED indicators: OK, Fault, Alarm, Bypass
- External termination design, field transducer wiring connects to external termination assembly 143737‑01
- Mechanical locking screws for rack fastening Working Principle: Cylinder pressure transducer analog signals are transmitted into module via external termination assembly 143737‑01. Module receives synchronous Keyphasor crank‑angle pulse signal from 3500/25 Keyphasor module. High‑speed sampling circuit acquires pressure value corresponding to every crank angle. Internal processor calculates compression ratio, rod force, rod reversal and other parameters. Calculated values compare with alarm setpoints, alarm events send instruction to rack backplane for relay action, meanwhile upload waveform and parameter data to System1 software for analysis. Installation Requirements:
- Install into two adjacent slots of 3500 instrument rack, power‑off rack before insertion or removal, non‑hot‑swap
- Field pressure transducer wiring connects to external termination assembly 143737‑01, use specified shielded high‑frequency cable
- Cable shield single‑end grounding inside cabinet
- Must connect 3500/25 Keyphasor module to provide crank‑angle synchronous pulse signal
- Keep adequate ventilation space for module heat dissipation Usage Notes:
- Only use Bently‑approved cylinder pressure transducers
- Complete transducer sensitivity and pressure range configuration in 3500 configuration software
- Strictly follow cable length requirement specified in official manual
- Regularly inspect termination block screw tightness
- Perform pressure loop calibration periodically
