The Bently Nevada 3300/20-12-01-01-00-00 is a high-performance, dual-channel monitoring module specifically engineered for critical rotating machinery. Designed to provide continuous, online surveillance of axial shaft position, this monitor is essential for protecting thrust bearings in steam turbines, gas turbines, and large centrifugal compressors. By utilizing precision proximity probe inputs, it ensures that axial displacement remains within safe operational limits, preventing catastrophic mechanical contact or failure.

Product Specifications

📍 Country of Origin: USA

⚖️ Unit Weight: Approximately 1.05 kg (2.3 lbs)

📏 Module Dimensions: 241 mm x 50 mm x 103 mm (9.50 in x 1.98 in x 4.05 in)

⚙️ Measurement Range: 1.0-0-1.0 mm (Option 12)

🔌 Input Signal Compatibility: 3300 or 7200 Proximitor systems at 200 mV/mil (Option 01)

🛡️ Relay Configuration: Epoxy-sealed (Option 01)

✅ Agency Approvals: CSA/NRTL/C (Option 01)

 

Frequently Asked Questions

❓ What is the primary function of the 3300/20 monitor? The device continuously measures and monitors two independent channels of shaft axial position. It provides early warning of thrust bearing wear or failure, allowing operators to intervene before equipment damage occurs.

❓ Is this monitor compatible with existing 3300 rack systems? Yes, the 3300/20 module is designed specifically for integration into the standard Bently Nevada 3300 Series monitoring rack system, acting as a modular component for comprehensive machine protection.

❓ Why is a “2-out-of-2” voting scheme recommended? For thrust position applications, the dual voting (AND) scheme is highly recommended to provide optimal protection against both false trips and missed trips, ensuring high reliability in critical safety circuits.

❓ What does the “Epoxy-sealed” relay option mean? This indicates the construction style of the alarm relays. Epoxy-sealed relays are selected for their durability and suitability in various industrial environments where sealing against environmental contaminants is necessary.

 

Recommended Bently Nevada Series & Models

If you are expanding or maintaining your monitoring infrastructure, consider these related Bently Nevada solutions:

• 3500/42M Prox/Seismic Monitor
• 3500/25 Keyphasor Module
• 3300/12 AC Power Supply
• 3300/14 DC Power Supply
• 3500/15 Power Supply Module
• 3500/05 Instrument Rack
• 3500/22M Transient Data Interface
• 2300/20 Vibration Monitor
• 990 Vibration Transmitter
• 3300 XL Proximity Transducer System