Bently Nevada 3500/70M Four-Channel Compressor Vibration Monitoring Module
The Bently Nevada 3500/70M is a four-channel reciprocating impulse velocity monitor for the 3500 Machinery Protection System. It monitors compressor crankcase and crosshead vibration using compatible seismic transducers.
Procurement & Technical Support
- Availability
- Contact us to confirm
- Price:
- US$ 6,477.90
Need help confirming compatibility or finding an alternative? Contact our team with your requirements.
Description
Bently Nevada 3500/70M
3500 Machinery Protection System | Reciprocating Impulse Velocity Monitor | 4 Channels | Compressor Crankcase and Crosshead Vibration Monitoring
Product Detailed Description
The Bently Nevada 3500/70M is a four-channel Reciprocating Impulse Velocity Monitor designed for machinery protection in reciprocating compressor applications. It accepts signals from compatible seismic transducers, conditions the signals to derive vibration measurements and compares the results with user-programmable alarm setpoints.Each channel can be configured for one of four measurement functions: Impulse Acceleration, Acceleration 2, Reciprocating Velocity or Low Frequency Reciprocating Velocity. The four channels are programmed in pairs, allowing two different measurement functions to operate simultaneously.The module provides continuous monitoring information for compressor crankcase and crosshead vibration, supporting machinery condition assessment and maintenance. It is designed for integration into the Bently Nevada 3500 Machinery Protection System.
Technical Specifications
| Parameter | Specification |
| Brand | Bently Nevada |
| Model | 3500/70M |
| Monitor Module Part Number | 176449-09 |
| Product Series | 3500 Machinery Protection System |
| Product Type | Reciprocating Impulse Velocity Monitor |
| Number of Channels | 4 |
| Measurement Functions | Impulse Acceleration, Acceleration 2, Reciprocating Velocity, Low Frequency Reciprocating Velocity |
| Channel Configuration | Channels programmed in pairs |
| Input Transducers | Compatible seismic transducers |
| Acceleration Input Impedance | 10 kΩ |
| Velocity Input Impedance | Greater than 1 MΩ |
| Power Consumption | 7.7 W nominal |
| Recorder Output | 4–20 mA |
| Maximum Recorder Load | 600 Ω |
| Configuration Software | 3500 Rack Configuration Software |
| Rack Space | 1 full-height front slot for monitor module |
| Country of Origin | Not confirmed; supplier listings indicate USA, verify unit label |
| Dimensions | 241.3 × 24.4 × 241.8 mm (monitor module) |
| Net Weight | Approx. 0.91 kg (monitor module only) |
| Replacement Model | No confirmed direct successor identified |
This item is listed for catalogue and inquiry purposes. Availability, condition, revision, warranty coverage, and lead time are confirmed with each quotation.
New Surplus: All items are genuine brand-new, distributor ready-stock supplying. Please inform us if you have any inquiry or demand.
Important Application Note
The 3500/70M monitor module and rear I/O module are separate components. Confirm the required I/O part number, transducer type, termination arrangement and barrier configuration before purchasing. Dimensions and weight above refer to the monitor module only, not the complete assembly.
Applications
| Industrial Automation & Control | Machinery & Equipment |
| • Reciprocating compressor vibration monitoring | • Reciprocating gas compressors |
| • Four-channel machinery condition monitoring | • Industrial air compressors |
| • Impulse acceleration measurement | • Compressor crankcase assemblies |
| • Reciprocating velocity measurement | • Crosshead and cylinder assemblies |
| • Configurable machinery alarm monitoring | • Large industrial compressor packages |
| Power & Electrical Systems | Industrial Applications |
| • 3500 machinery protection rack installations | • Oil and gas processing facilities |
| • Industrial monitoring control cabinets | • Petrochemical plants |
| • Compressor protection systems | • Industrial refrigeration plants |
| • Vibration signal monitoring systems | • Natural gas compression stations |
| • 4–20 mA monitoring interfaces | • Manufacturing and process facilities |
Additional information
| Warranty : | 12 Month |
|---|---|
| Lead Time | Ready Stock |







Reviews
There are no reviews yet.