Bently Nevada 3500/70M (176449-09) Four channel speed monitoring device
The Bently Nevada 3500/70M (176449-09) is a 4-channel Reciprocating Impulse Velocity Monitor from the 3500 Machinery Protection System series, engineered by Bently Nevada (a Baker Hughes brand). Designed for reciprocating machinery, it processes seismic transducer inputs to measure impulse acceleration, acceleration, reciprocating velocity, and low-frequency reciprocating velocity. The module integrates into the 3500 rack, offering programmable alarms, self-diagnostics, and seamless compatibility with predictive maintenance strategies.
Key Functions
- Multi-Parameter Vibration Monitoring: Measures impulse acceleration, acceleration, reciprocating velocity, and low-frequency reciprocating velocity for reciprocating compressors, engines, and pumps.
- 4-Channel Configuration: Channels grouped in pairs, configurable via 3500 Rack Software for independent or synchronized monitoring.
- Precision Signal Conditioning: Accepts inputs from 1–4 seismic transducers, converting raw signals into accurate vibration data.
- User-Programmable Alarms: Adjustable warning/critical alarm thresholds for each channel, enabling early fault detection.
- Self-Diagnostics & Status Indicators: Front-panel LEDs for OK and communication status; continuous self-checks ensure operational integrity.
- System Integration: Compatible with 3500 rack systems, Modbus communication, and DCS/SCADA platforms for remote monitoring.
Specifications
| Parameter | Description |
|---|---|
| Product Type | 4-Channel Reciprocating Impulse Velocity Monitor |
| Model | 3500/70M (Part Number: 176449-09) |
| Measured Parameters | Impulse Acceleration, Acceleration 2, Recip Velocity, Low-Frequency Recip Velocity |
| Number of Channels | 4 (grouped in 2 pairs) |
| Input Sensitivity | Impulse Acceleration: 5–115 mV/g; Recip Velocity: 90–575 mV/(in/s) |
| Power Consumption | 7.7 W (nominal) |
| Power Supply | 115/230 V AC (via 3500 rack power supply) |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Dimensions (H×W×D) | 241.3 × 24.4 × 241.8 mm (9.5 × 0.96 × 9.52 in) |
| Weight | 0.91 kg (2.0 lbs) |
| Communication | Isolated RS-485, Modbus RTU (3500 rack network) |
| Alarms | 2 configurable levels (warning/critical) per channel |
| Certifications | CE, UL, CSA compliant |
| Warranty | Standard 1-year warranty |
Applications
The 3500/70M is purpose-built for reciprocating machinery health monitoring in:
- Oil & Gas (Reciprocating Compressors, Pump Stations)
- Power Generation (Gas/Diesel Engines, Reciprocating Generators)
- Petrochemical Plants (Process Compressors, Reciprocating Pumps)
- Heavy Industry (Mining, Steel – Reciprocating Machinery)
- Industrial Manufacturing (Engine Test Benches, Compressor Skids)
Recommended Similar Products (3500 Series)
- 3500/42M Proximitor/Seismic Monitor: 4-channel module for rotating machinery, monitoring shaft vibration, position, and seismic vibration via proximity probes or seismic transducers。
- 3500/60 Temperature Monitor: 8-channel module for RTD/thermocouple inputs, monitoring bearing, winding, and process temperatures for reciprocating/rotating assets。
- 3500/32 Relay Module: 16-channel relay output module, providing alarm/shutdown contacts for machinery protection systems, compatible with 3500/70M alarm outputs。
- 3500/92 Communication Gateway: Interface module connecting 3500 racks to DCS/SCADA via Modbus TCP/IP or Ethernet/IP, enabling remote monitoring of 3500/70M data。
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