Bently Nevada 3300/47 Differential Expansion Monitor
| Brand | Bently Nevada |
| Module Number | 3300/47 |
| Order Number | 3300/47 |
| Unit Price | $500 |
| Country Of Origin | USA |
| Weight | 0.8kg |
| Certificate |
C/O from the Chamber of Commerce C/Q from the Manufacturer |
| Warranty | 12 Months |
| Inventory Qty | 3 |
Bently Nevada 3300/47 is a complementary input differential expansion monitor that measures the relative displacement difference between the rotor and the housing of rotating equipment (such as steam turbines and gas turbines) in real time through a dual-channel LVDT (Linear Variable Differential Transformer) and generates a differential expansion alarm signal.
Bently Nevada 3300/47 Key parameters
|
Parameter |
Specification |
Notes |
|
Input Signal Type |
Dual DC LVDT Transducers |
Complementary displacement measurement |
|
Input Impedance |
1.0 MΩ |
High impedance for signal stability |
|
Scale Factor |
Jumper-selectable: 10 mV/mil, 9 mV/mil, 3.5 mV/mil |
Matches LVDT sensitivity |
|
Accuracy |
±0.33% FS (typical), ±1% FS (max) at +25°C |
Industry-leading precision |
|
Output Options |
4–20 mA, 0–10 Vdc, 1–5 Vdc |
Programmable via jumpers |
|
Output Accuracy |
±0.7% (current), ±1.1% (voltage) at +25°C |
Includes conditioning error |
|
Alarm Setpoints |
Dual adjustable: Alert & Danger (0–100% FS) |
Digital micro-adjustment (±0.4% repeatability) |
|
Power Consumption |
1.5 W nominal |
Low-energy operation |
|
Operating Temp |
0°C to +65°C |
Industrial-grade range |
|
Certifications |
CSA/NRTL/C, ATEX II 3G |
Hazardous area compliance |
|
Front Panel Display |
Dual-channel bargraph LCD |
Real-time visual monitoring |
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Payment Term：T/T
Bently Nevada 3300/47 Key Features
Complementary input differential technology
Bently Nevada 3300/47 adopts dual LVDT complementary input design, directly outputs the dynamic displacement difference between the rotor and the shell, accurately captures the asymmetric thermal expansion during the start-up and shutdown process, and avoids friction between the turbine rotor and the stator.
Industrial protection and diagnosis
Complies with ATEX II 3G explosion-proof standards and is suitable for high temperature and high humidity environments. The built-in OK LED status light diagnoses sensor disconnection or short circuit faults in real time to reduce false alarm shutdowns.
Flexible configuration and compatibility
Supports jumper switching sensitivity (10 mV/mil, etc.), compatible with various industrial standard LVDTs; modular design adapts to 3300/05 series racks (4-14 slots), meeting API 670 seismic requirements.
