Overview
The Bently Nevada 3500/42M module with part numbers 176449‑02 and 135489‑03 is a high‑performance vibration and position monitor used in the 3500 Machinery Protection System. It combines proximity and seismic measurements to protect critical rotating machinery by detecting displacement, vibration, and imbalance.
General Information
Part Number: 176449‑02 + 135489‑03
Brand / Country of Origin: Bently Nevada / USA
Manufacturer: Bently Nevada (Baker Hughes)
Series: 3500 Series
Type: Proximitor / Seismic Monitor Module
Mounting: Installed in 3500 I/O rack
Power Specifications
Supply Voltage: Approximately 18–32 V DC typical
Power Consumption: Engineered for continuous operation with moderate current draw
Protection: Internal signal isolation and filtering to ensure measurement stability
Communication & Interface
Interface Type: 3500 system backplane
Supported Sensors: Proximity probe, velocity or acceleration seismic transducer
Outputs: Buffered transducer outputs per channel, analog 4–20 mA feedback
Diagnostics: Front-panel LEDs for module status, bypass, and communication
Environmental
Operating Temperature: –30 °C to +65 °C
Humidity: 5% to 95% RH, non-condensing
Installation Environment: Suitable for 3500 system racks in control or machinery rooms
Robustness: Designed to withstand vibration and electrical noise typical of industrial operations
Dimensions & Weight
Dimensions (L × W × H): 241.3 × 24.4 × 241.8 mm
Weight: ~0.91 kg
