Product Overview
The Bently Nevada 3300/20-12-01-02-01-02 Dual Thrust Position Monitor delivers precise and continuous monitoring of axial shaft position on rotating machinery. It provides two independent channels that detect thrust movement relative to machine clearance, helping operators identify early signs of bearing wear or failure.
This model directly observes the thrust collar’s position using proximity probes, ensuring consistent and reliable readings. Moreover, it is fully compatible with 3300 and 7200 Proximitor® systems, enabling seamless integration into existing Bently Nevada 3300 racks.
Key Functional Benefits
- Dual-Channel Precision: Monitors two independent axial thrust positions in real time.
- High Measurement Accuracy: ±0.33% of full scale at +25°C for stable operation.
- Flexible Output Options: Configurable outputs include +4 to +20 mA, 0 to -10 VDC, and +1 to +5 VDC.
- Integrated Alarm Functions: Features programmable Alert and Danger alarms for each channel.
- User-Friendly Display: Bright LCD bargraph provides fast visual feedback and fault indication.
- Rugged Construction: Designed for industrial environments up to +65°C with 95% humidity tolerance.
In addition, the 3300/20 monitor includes LED status indicators for easy condition verification and real-time alarm tracking.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 3300/20-12-01-02-01-02 |
| Input Type | One or two proximity probe inputs |
| Sensitivity | 200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm) |
| Input Impedance | 10 kΩ |
| Power Consumption | 1.5 W nominal |
| Accuracy | ±0.33% typical, ±1% max at +25°C |
| Recorder Outputs | +4–20 mA, 0–10 VDC, or +1–5 VDC |
| Output Impedance | 100 Ω (min load 10 kΩ) |
| Transducer Supply Voltage | -24 VDC or -18 VDC (user selectable) |
| Alarm Setpoints | 0–100% of full scale, repeatability ±0.39% |
| Display | 63-segment bargraph LCD, ±1.6% resolution |
| Operating Temperature | 0°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | Up to 95% non-condensing |
| Weight | 1 kg (2.2 lbs) |
| Rack Space | One rack position (except positions 1 and 2) |
Furthermore, this module conforms to CE EMC Directive 158710 and Low Voltage Directive 135300, ensuring compliance with industrial safety standards.
System Integration Applications
The Bently Nevada 3300/20-12-01-02-01-02 is ideal for turbomachinery, compressors, and high-speed rotating equipment requiring reliable thrust position tracking. It integrates effortlessly into 3500 protection systems and plant-wide condition monitoring networks, ensuring predictive maintenance and operational efficiency.
Typical Uses:
- Monitoring axial displacement in turbines and compressors.
- Detecting thrust bearing wear or failure before downtime occurs.
- Supporting redundant protection architectures with 3300 rack compatibility.
Therefore, it plays a crucial role in safeguarding machinery, improving uptime, and reducing maintenance costs.
Details
| Weight | 1 kg |
|---|
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