3500/44M-01-00 176449-03 high-performance multi-parameter integrated monitoring module

The BENTLY 3500/44M-01-00 176449-03 is a high-performance multi-parameter integrated monitoring module in Bently Nevada’s 3500 Series Rotating Machinery Protection & Monitoring System. The "M" in its model indicates "mixed sensor compatibility," meaning it can simultaneously connect to multiple types of sensors to monitor core mechanical parameters of rotating equipment (e.g., steam turbines, centrifugal compressors, large generators). As a standardized configuration (part number 176449-03), it integrates vibration, displacement, and temperature monitoring into a single module—simplifying system architecture while ensuring high precision and real-time protection. Below is its comprehensive detailed information:

I. Core Technical Parameters

Category	Specific Specifications
Basic Identification	- Model: 3500/44M-01-00 (Multi-Parameter Integrated Monitor, "M" = Mixed Sensor Support)- Part Number: 176449-03- Applicable System: Bently 3500 Series (compatible with 3500/10 single-frame and 3500/20 multi-frame racks)- Channel Configuration: 4 independent vibration/displacement channels + 4 dedicated temperature channels (all electrically isolated to avoid cross-interference)
Vibration/Displacement Monitoring	- Measurable Parameters: Radial vibration (relative/absolute), axial position (thrust), differential expansion, rotor eccentricity, shaft orbit- Sensor Compatibility:- Eddy current probes (e.g., Bently 3300XL 5mm/8mm/11mm): Sensitivity 3.94mV/µm (100mV/mil) or 7.87mV/µm (200mV/mil)- Seismic sensors (velocity transducers/accelerometers): Velocity 0.1–100 mm/s (RMS), acceleration 0.1–500 g (peak)- Accuracy: ±0.2% of full scale (at 25°C, after calibration)- Frequency Response: 0.1 Hz–10 kHz (software-configurable filters: low-pass, high-pass, band-pass)
Temperature Monitoring	- Sensor Compatibility: 2-wire/3-wire Pt100 RTDs (Class A/B), Type E/J/K/T thermocouples (TC)- Measurement Range: RTDs -200°C to +600°C; TCs -200°C to +1300°C (optional high-temperature range)- Accuracy:- RTDs: ±0.1°C (-50°C to +150°C), ±0.3°C (+150°C to +600°C)- TCs: ±0.3°C (with built-in cold-junction compensation, CJC)- Update Rate: 1 second per temperature channel (real-time tracking of bearing/oil temperature changes)
Input/Output Interface	- Inputs:- 4 vibration/displacement inputs (shielded, 24V DC excitation for eddy current probes)- 4 temperature inputs (isolated, 2.5mA constant current excitation for RTDs)- Outputs:- 6 Form C (SPDT) relays: Configurable for "Warning" (early alert) or "Danger" (trip) triggers; max switching voltage 250V AC/30V DC, max current 5A- 4 4-20 mA analog outputs: 1 per key parameter (e.g., radial vibration, axial position), full-scale range programmable- 4 buffered sensor outputs: 1:1 signal replication for external data loggers/analyzers; output impedance 550Ω- Communication: Integrates with 3500 rack backplane; supports data synchronization with 3500/50 (speed) and 3500/25 (keyphasor) modules