Bently Nevada 177896-05 Machinery Dynamics Monitor

The Bently Nevada 3701/40 ADAPT Machinery Dynamics Monitor (Part No. 177896-05) is a rugged, field-mountable device engineered for high-performance vibration protection and condition monitoring of rotating machinery. Made in the USA, this monitor is ideal for turbines, compressors, gearboxes, and roller element bearing (REB) machines.

This monitor combines real-time signal processing with protection, diagnostics, and condition monitoring in a compact, durable package. It supports redundant configurations to ensure reliability in critical applications. Additionally, its design allows mounting close to machinery, minimizing wiring complexity and installation time.

Technical Specifications

• Model / Part Number: 3701/40 (177896-05)

• Product Type: ADAPT Machinery Dynamics Monitor

• Sensor Channels: Up to 12 vibration channels (6 per input module)

• Speed Inputs: Up to 2 Keyphasor/Speed inputs (1 per input module)

• Supported Sensors: Proximity (eddy-current) probes, accelerometers, velocity sensors, IEPE, seismic transducers, dynamic pressure sensors, magnetic speed pickups

• Signal Processing: Features include A/D conversion, digital signal processing, alarm logic, fault diagnostics, supporting radial vibration, thrust position, casing absolute vibration, and REB condition monitoring

• Communications: Dual Ethernet RJ45 ports per CPU, supporting Modbus TCP/IP and Ethernet Global Data (EGD) protocols

• Power Supply: Single or dual-redundant +24 V DC

• Form Factor: Rugged, field- or skid-mountable with a compact design; weighs approximately 4.3 kg

• Additional Features: Stand-alone alarm and measurement logic, configurable nX vectors, parallel sampling, high dynamic range of 110 dB, 40 kHz bandwidth, modular design, and configurable relay outputs