My Cart
0 items
Genuine Automation Parts | Worldwide Express Delivery | 12-Month Warranty — [GET A QUOTE]
The 3300/20-12-01 is a dual-channel axial thrust position monitoring module within the Bently Nevada 3300 series. It is specifically designed to track the rotor’s axial position relative to thrust bearings in critical...
Availability: Low stock: 10 left
Reliable Worldwide Delivery
30-Day Money-Back Guarantee
Need more details? Read our fullShipping PolicyandRefund Policy.
The 3300/20-12-01 is a dual-channel axial thrust position monitoring module within the Bently Nevada 3300 series. It is specifically designed to track the rotor’s axial position relative to thrust bearings in critical machinery such as steam turbines, centrifugal compressors, and multi-stage pumps. By providing continuous monitoring and integrated alarm/trip logic, this module acts as a primary protection layer to prevent mechanical damage caused by axial misalignment or bearing failure.
The 3300/20-12-01 processes signals from Proximitor transducers, offering high-precision measurements and configurable full-scale ranges. Its fast response and diagnostic features ensure reliable detection of abnormal axial movement and safeguard high-value rotating assets.
| Specification | Description |
|---|---|
| Model Designation | 3300/20 |
| Full Part Number | 3300/20-12-01 |
| Primary Function | Dual-channel axial thrust position monitoring |
| Transducer Compatibility | 3300 / 3300 XL Proximitor Systems (5mm, 8mm, 11mm) |
| Full-Scale Range | Typically -1.0 to +1.0 mm (-40 to +40 mils), configurable |
| Accuracy | ±0.03 mm (±1.1 mils) at room temperature |
| Output Options | Dual 4-20 mA DC analog outputs; Alert and Danger relays |
| Response Time | <100 ms for alarm/trip |
| Power Consumption | 3.5 W nominal |
| Operating Temperature | -20°C to +65°C (-4°F to +149°F) |
Steam and gas turbines
Centrifugal compressors
Multi-stage pumps
Turbo-expanders
This module is essential for detecting abnormal axial loads caused by process changes, lubricant contamination, or surge conditions, enabling preventative shutdown before mechanical failure.
What is the advantage of dual-channel monitoring?
Dual-channel modules can operate in voting mode, requiring agreement from both channels before issuing a trip. This reduces false trips caused by a single sensor or wiring fault.
How does the module respond to transducer failure?
Integrated self-diagnostics illuminate a “Not OK” LED if the Proximitor signal goes out of range (short/open/failure) and inhibit alarms to prevent false trips.
Why is fast response time important?
With <100 ms trip capability, the 3300/20-12-01 ensures immediate protective action against rapid axial excursions, preserving rotor and bearing integrity.
