Introduction to 3500/20-01-01-00 125744-02
The 3500/20-01-01-00 125744-02 is a critical monitoring module from the Bently Nevada 3500 Series, a globally recognized system for machinery protection. This specific model is a Dual Channel Proximitor (also known as a Driver/Monitor).
Its primary function is to interface directly with eddy current proximity probes used for measuring relative shaft vibration and position (e.g., thrust position, eccentricity) in rotating machinery. The module provides the necessary power to the probes, conditions the returned signals, and processes the data to provide key measurements like vibration (peak-to-peak), position (DC gap voltage), and also serves as a Keyphasor® input. If pre-configured thresholds are exceeded, it triggers alarms to protect critical assets like turbines and compressors from damage. The "125744-02" is a specific hardware or firmware revision.
Technical Parameters
The following table details the key specifications for the 3500/20-01-01-00 module.
| Parameter | Specification |
|---|---|
| Product Family / Series | Bently Nevada 3500 |
| Module Type | Rack-Monitoring Module |
| Function | Dual Channel Proximitor / Driver Monitor |
| Compatible Sensors | Eddy Current Proximity Probes (e.g., 5 mm or 8 mm) |
| Key Measurements | Relative Shaft Vibration (Peak-to-Peak), DC Gap Voltage, Keyphasor® Signal |
| Probe Power (OSC Output) | Typically -24 V DC (Power for the proximity probe) |
| Input Power | Powered by the 3500 Rack |
| Alarm Channels | Two dedicated alarm relays per channel (Alert and Danger) |
| Communication | Integrates with the 3500 framework; data accessible via the 3500/92 Communication Module |
| Operating Temperature | 0°C to +65°C (+32°F to +149°F) (Typical for control room environments) |
| Mounting | Installs in a 3500 Series rack |
| Approx. Dimensions (H x W) | 3 U (133.4 mm) x 1/4 Rack Width (Typical for a single-width 3500 module) * |
| Approx. Weight | ~ 1.0 kg (2.2 lbs) |
Note: The exact dimensions are defined by the rack slot it occupies.
Application Scenarios
This module is fundamental for monitoring the radial and axial position of shafts in high-speed, critical rotating equipment.
Power Generation: Protecting large steam and gas turbines in power plants by monitoring shaft vibration, ensuring the rotor is running within safe mechanical clearances to prevent catastrophic rubbing or failure.
Oil & Gas: Safeguarding centrifugal and axial compressors on offshore platforms and pipelines by monitoring shaft vibration and thrust bearing position, which is critical for preventing blade contact and seal damage.
Petrochemical & Refining: Monitoring critical machinery like synthesis gas compressors and large feedwater pumps to detect early signs of imbalance, misalignment, and other mechanical faults.
Hydroelectric Power: Monitoring the shaft runout and vibration of large hydro-turbine generators to ensure operational stability and longevity.
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
