Bently Nevada Commtest VB7 Dual Channel Vibration Analyzer

The Bently Nevada Commtest VB7 Dual Channel Vibration Analyzer has an AC coupled range of 16V peak-peak and a DC coupled range of 0 - 20V, -10V... 10V, and -20... 0V. It can support 40kHzFmax and has a dynamic range ≥95dB. Additionally, this device offers waveform analysis tools and two-channel simultaneous recordings.

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 - 20 V, -10 V... 10 V, -20 V... 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 - 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 - 300 000 RPM (0.2 - 5 kHz)
Output to drive strobe	Up - 140 Hz (8400 CPM)
Demodulation bandwidths	23 bandwidth options From 125 Hz - 1250 Hz up to 16 kHz - 20 kHz
Long time waveform Fmax	25 Hz - 40 kHz

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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