Bently Nevada 3500/44M Aeroderivitive GT Vibration Monitor
| Brand | Bently Nevada |
| Module Number | 3500/44M |
| Unit Price | $800 |
| Country Of Origin | USA |
| Weight | 0.86kg |
| Certificate |
C/O from the Chamber of Commerce C/Q from the Manufacturer |
| Warranty | 12 Months |
| Inventory Qty | 5 |
Bently Nevada 3500/44M is a four-channel vibration monitoring module designed for aero-derivative gas turbines. Its core purpose is to collect parameters such as speed, vibration acceleration/speed in real time, compare the preset alarm threshold to trigger shutdown protection, and prevent over speed, surge and other faults.
Bently Nevada 3500/44M Key parameters
|
Parameter |
Specification |
|
Input Channels |
4 |
|
Input Impedance |
>95 kΩ (Aero GT I/O) |
|
Power Consumption |
7.7 W (typical) |
|
Sensitivity |
3.94 mV/(mm/s) or 5.71 mV/(mm/s) |
|
Frequency Response |
4 Hz–30 kHz (Direct), 18 Hz–14.5 kHz (Integrated Acc) |
|
Accuracy |
±0.33% FS (typical), ±1% FS (max) |
|
Tracking Filter |
60–240,000 cpm |
|
Alarm Setpoints |
0–100% FS |
|
Recorder Output |
4–20 mA |
|
Transducer Power |
-23 Vdc, 43 mA max |
|
Operating Temperature |
-40°C to +85°C |
|
Certifications |
API 670, ATEX/IECEx T4, SIL 2 |
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Bently Nevada 3500/44M Compatible products
Sensors and interfaces: Bently Nevada 86517/86497 interface modules are required to connect to velocity sensors, and are compatible with 3300 series eddy current probes and Velomitor velocity meters.
System rack and communications: Integrated in the 3500/05 rack, powered by the 114M5335-01 power module; connected to DCS or System 1* software via the 3500/92 communication gateway for fault diagnosis.
Execution unit: The alarm output can drive the 3500/32 relay module to execute shutdown, or link the TDXnet dynamic data acquisition system to record transient waveforms.
Foreign engineering application examples
North Sea oilfield generator set:
Norwegian offshore platform uses Bently Nevada 3500/44M TMR configuration to monitor RB211 gas turbines. Redundant design avoids accidental shutdowns caused by salt spray corrosion, reducing losses by $1.2 million per year.
North American combined cycle power plant:
Texas LM6000 unit integrates multiple sets of Bently Nevada 3500/44M, and captures blade resonance above 2000Hz through bandpass filtering to warn of blade crack failure.
