Product Introduction: 3500/22
The 3500/22 is a Velocity Seismic Monitor module from the Bently Nevada 3500 Machinery Protection System. This module is designed to continuously monitor and measure the casing vibration (in units of velocity) of rotating machinery using inputs from seismic transducers, such as velocity sensors. It provides critical protection by detecting overall vibration levels caused by mechanical issues like imbalance, misalignment, looseness, and bearing defects. The module processes the signals to provide key vibration parameters and triggers vital alarms or shutdowns to prevent catastrophic machine failure.
Technical Parameters
The key technical specifications for a standard 3500/22 module are summarized in the table below. *Note: Specific values like weight can vary slightly between hardware revisions (e.g., 3500/22M, 3500/22M-01-00).*
| Parameter | Specification |
|---|---|
| Part Number Series | 3500/22 |
| System | Bently Nevada 3500 |
| Module Type | Velocity Seismic Monitor (2-channel) |
| Dimensions (H x W x D) | 190 mm x 55 mm x 120 mm (Standard 3500 Rack Slot) |
| Weight | 0.45 - 0.48 kg (approx., varies by revision) |
| Input Signal | Accepts signals from velocity transducers (seismometers) |
| Input Impedance | 100 kΩ |
| Measurement Range | 0 to 100 mm/s (0 to 4 in/s) peak, selectable ranges |
| Frequency Response | 4.5 Hz to 1000 Hz (within ±3 dB) |
| Dynamic Range | 80 dB |
| Alarm Setpoints | Two user-configurable levels per channel (Alert and Danger) |
| Outputs | Buffered sensor output, 4-20 mA proportional output (per channel) |
| Power Supply | Powered by the 3500 Rack; +24 VDC from the rack's power supply |
| Operating Temperature | -20°C to +65°C |
Application Scenarios
The 3500/22 monitor is a cornerstone for protecting non-critical (but still vital) machinery and monitoring structural vibration across various industries:
Power Generation:
Monitoring boiler feed pumps, induced draft (ID) and forced draft (FD) fans, cooling tower fans, and motor bearings in power plants where direct shaft vibration monitoring is not applicable.
Oil & Gas:
Protecting pumps, motors, and small compressors on offshore platforms and in refineries by monitoring overall bearing housing vibration.
Water & Wastewater Treatment:
Protecting large pumps and aeration blowers from mechanical failure, ensuring continuous operation of treatment facilities.
HVAC Systems:
Monitoring large centrifugal fans and pumps in commercial and industrial heating, ventilation, and air conditioning systems for predictive maintenance.
Industrial Machinery Trains:
Used on gearboxes, motor bearings, and other supporting components in a machine train where proximity probes are not installed, providing a comprehensive view of machine health.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
Your trust is the driving force for our continuous progress, submit your requirements immediately to get exclusive quotes
