Bently Nevada Commtest VB7 Dual Channel Vibration Analyzer

The Bently Nevada Commtest VB7 Dual Channel Vibration Analyzer is a high-performance device designed for precise vibration analysis and dynamic balancing of rotating machinery. The VB7 features dual-channel measurement capabilities, extensive FFT resolution, and dual-plane balancing to address complex vibration issues efficiently. The analyzer is equipped with 1GB of memory for extensive data storage and is supported by Ascent software for advanced diagnostic capabilities. Ideal for industries like power generation, automotive, and aerospace, the VB7 helps in maintaining optimal machine performance and reliability. The Commtest VB7 analyzer also integrates seamlessly with System 1 Condition Monitoring and Diagnostic software, enhancing its utility for predictive maintenance. Additionally, its great built and portable form factor makes it suitable for both field and workshop environments, ensuring versatile application across various industrial settings.

Product Info Related Products

Sensor input	2 channels
Compatible sensor types	Accelerometer, velocity, displacement, current
AC coupled range	16 V peak-peak Allows for ± 8 V sensor output swing (± 80 g)
DC coupled ranges	0 V to 20 V, -10 V to 10 V, -20 V to 0 V
Analog to digital conversion	24-bit ADC
Sensor excitation current	0 mA or 2.2 mA (configurable), 24 V maximum
Laser sensor range	10 cm to 2 m nominal
Power supply to sensor	5 V, 50 mA
TTL pulse rating	3.5 V (4 mA) min, 28 V (5 mA) max, off-state 0.8 V
Speed range	10 to 300 000 RPM (0.2 to 5 kHz)
Output to drive strobe	Up to 140 Hz (8400 CPM)
Demodulation bandwidths	23 bandwidth options From 125 Hz to 1250 Hz up to 16 kHz to 20 kHz
Long time waveform Fmax	25 Hz to 40 kHz
Dimensions (W x L x H)	9.9” x 5.8” x 2.4” (252 x 148 x 60) mm
Weight	2.7 lb. (1.2 kg)
Operating temperature	14°F to 122°F (-10°C to 50°C)

Route enabled - Build routes in Ascent^® and send these to your instrument
CBDb - Commtest Bearing Database with over 30,000 bearings
Waveform analysis tools - Perfect for power users
Technical Associates Proven Method – for effortless setup of measurements and alarm levels
2-channel simultaneous recordings
Wide measurement range - 1,000 g, 25,000 mm/s, 2,500mm
2 plane balancing
Unique Commtest 6Pack™ recording system
≥ 95 dB dynamic range
6 400 lines FFT resolution
40 kHz Fmax
1 GB memory – Virtually unlimited spectra and waveform storage
Laser speed sensor for automatic capture of machine running speed
Keyphasor® tach mode
Option to add Flex features

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