Bently Nevada 3500/44M Aeroderivative GT Vibration Monitor

The Bently Nevada 3500/44M is a high-performance four-channel vibration monitor designed for aeroderivative gas turbine applications. This instrument offers continuous machine monitoring, comparing real-time data with preset alarm setpoints to activate warnings when needed. Consequently, it ensures early detection of potential issues, facilitating quick responses from operators and maintenance teams.

Moreover, the 3500/44M features versatile filter options, including signal integration, 1X vibration tracking, and band-pass vibration filters, making it adaptable to different monitoring needs. Its robust design guarantees precise performance under various conditions, ensuring reliability across multiple industrial environments.

Key Features:

The monitor continuously compares monitored parameters to alarm setpoints, triggering alerts when necessary.
It interfaces seamlessly with Velomitor sensors and accelerometers using Bently Nevada interface modules.
Multimode channels support up to eight alarm parameters, including configurable alert and danger setpoints with time delays.
The system automatically adjusts to different machine modes using contacts on multimode I/O modules or commands sent via a communications gateway.

Technical Specifications:

Parameter	Specification
Model	3500/44M Aeroderivative GT Vibration Monitor
Accuracy	±0.33% of full-scale (typical), ±1% maximum
Frequency Response	4 Hz to 30 kHz (-3 dB)
Direct Signal – Bandpass Filter	Low-pass: 200 Hz (-3 dB), High-pass: 25, 75, or 100 Hz (-3 dB)
Tracking Filter	Valid for machine speeds from 60 to 240,000 cpm
Tracking Filter Roll-Off	6-pole, 120 dB per decade
Signal Inputs	1 to 4 signals from interface modules, Velomitors, and accelerometers
Power Consumption	7.7 Watts (typical)
Input Impedance	Prox/Accel Inputs: 10 kΩ, Velomitor Inputs: 3.5 MΩ

Physical Dimensions and Weight:

Monitor Module (Main Board):
- Dimensions: 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
- Weight: 0.91 kg (2.0 lb)
I/O Modules:
- Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
- Weight: 0.45 kg (1.0 lb)