Vibration Analyzer

Vibration analysis (VA), applied in an industrial or maintenance environment aims to reduce maintenance costs and equipment downtime by detecting equipment faults.VA is a key component of a condition monitoring (CM) program, and is often referred to as predictive maintenance (PdM). Most commonly VA is used to detect faults in rotating equipment (Fans, Motors, Pumps, and Gearboxes etc.) such as imbalance, misalignment, rolling element bearing faults and resonance conditions.

VA can use the units of Displacement, Velocity and Acceleration displayed as a time waveform (TWF), but most commonly the spectrum is used, derived from a fast Fourier transform of the TWF. The vibration spectrum provides important frequency information that can pinpoint the faulty component.

The fundamentals of vibration analysis can be understood by studying the simple Mass-spring-damper model. Indeed, even a complex structure such as an automobile body can be modeled as a "summation" of simple mass–spring–damper models. The mass–spring–damper model is an example of a simple harmonic oscillator. The mathematics used to describe its behavior is identical to other simple harmonic oscillators such as the RLC circuit.

Note: This article does not include the step-by-step mathematical derivations, but focuses on major vibration analysis equations and concepts. Please refer to the references at the end of the article for detailed derivations.
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VIBXPERT EX is a high-performance, intrinsically safe, fully-featured data collector, vibration analyzer and field balancer for easy condition monitoring and troubleshooting of rotating equipment in explosive environments such as petrochemical plants, refineries, offshore oil rigs, etc. VIBXPERT EX collects field data including vibration information, bearing condition, inspection and process data a
£2,602.02
PRUFTECHNIK Vibxpert Ex Vibration Analyzer VIB 5.300 - USED (Vibxpert Ex)
Vibration analysis in explosive environments

VIBXPERT EX is a high-performance, intrinsically safe, fully-featured data collector, vibration analyzer and field balancer for easy condition monitoring and troubleshooting of rotating equipment in explosive environments such as petrochemical plants, refineries, offshore oil rigs, etc.

VIBXPERT EX collects field data including vibration information, bearing condition, inspection and process data and seamlessly integrates with the OMNITREND Center software platform for in-depth analysis.

The modular firmware structure allows you to upgrade the VIBXPERT EX from a route data collector to a full-blown troubleshooting device with advanced features such as coast down/run-up measurements, event recording, ODS & modal analysis and cross-channel phase measurement.

It is also possible to connect the VIBXPERT EX to protection systems via the buffered outputs. This enables you to perform additional analysis such as shaft vibration, shaft centerline plots or orbits e.g. on turbines, compressors and other turbomachinery.

As with all our data collectors and vibration analyzers, you will benefit from free software and firmware updates, and low ownership cost.

Intrinsically safe vibration analysis instrument and field balancer

Approved for ATEX Zone 1

Intuitive joystick operation (left- or right-handed)

Fast data acquisition with "trending spectra"

Robust aluminum housing

Compatible with VIBCODE transducer

Highest resolution for detailed frequency analysis

Interface to machine protection systems for further analysis

VIBXPERT® Ex – Technical data
Input
Analog, 2x Voltage (AC/DC, ±30 V max.)
Current (AC/DC, ±30 mA max.)
ICP-type accelerometer (2 mA, 24 V max.)
Current Linedrive (CLD) accelerometer (10 V, 10 mA max.)
Frequency range DC ... 51.2 kHz (Acceleration from 0.5 Hz)
Dynamic range 96 dB (measurement) / 136 dB (total)
Sampling frequency up to 131 kHz per channel
Analog, 1x Thermocouple (type K)
Digital
(1 1 Pulse/Tacho), 1x
RPM, Trigger, Keyphaser with pulse and AC signals: 0 V ... 26 V
or -26 V ... 0 V
Output
Stroboscope control TTL output
Signal-Out Connection for headphones to listen to the analog input signal;
signal processing (oscilloscope)
Meas. range / Accuracy
Vibration acceleration depends on the transducer connected
Shock pulse -10 ...80 dBsv / ± 3dBsv
RPM 10 ... 200 000 min-1 / ±0.1‰ or ± 1 min-1
(the lower accuracy is applicable)
Temperature type K -50 ... 1000°C / 1% or ±1°C (the lower accuracy is applicable)
Hardware
Display LCD, backlit, 1/2 VGA (480 x 320 pixel), 16 grey scales
Battery type Li Ion rechargeable battery pack (7.2V / 4.8Ah - 34 Wh)
Charging time < 5 hours in the device or external with optional charging station
Charging temperature 0°C ... 50°C
Memory Internal: 64 MB RAM;
Compact Flash: 1 GB or 4 GB
Dimensions 250 x 220 x 37 mm (LxWxH)
Weight approx. 2.3 kg
IP rating IP65, dust and splash-proofed
Temperature range -10°C ... 50°C (Operation)
-20°C ... 60°C (Storage)
Intrinsic safety II 2 G Ex ib IIC T4

Vibration transducers (accessories)
VIBCODE® – type VIB 8.660-XVS
Hand-held transducer
with automatic location
identification
reliable identification of the coded measurement location
reproducible measurement conditions
intrinsic safety: II 2 G Ex ib IIC T4
Industrial accelerometer – type VIB 6.142 DEX
Mobile industrial
accelerometer for
standard machines
machine vibration & roller bearing condition
(shock pulse)
medium and high rotational speed (> 600 rpm)
magnetic, bonded or threaded mounting
Marking, gas explosion protection
Dust explosion
 II 2 G Ex ib IIC T4
 II 2 D Ex ibD 21 T187°C
Industrial accelerometer – type VIB 6.147 EX
Mobile industrial
accelerometer for
‘low-speed’ machines
machine vibration
low rotational speed (> 120 rpm)
magnetic, bonded or threaded mounting
Marking, gas explosion protection
Dust explosion
 II 2 G Ex ib IIC T4
 II 2 D Ex ibD 21 T187°C
VIBXPERT EX is a high-performance, intrinsically safe, fully-featured data collector, vibration analyzer and field balancer for easy condition monitoring and troubleshooting of rotating equipment in explosive environments such as petrochemical plants, refineries, offshore oil rigs, etc. VIBXPERT EX collects field data including vibration information, bearing condition, inspection and process data a
£2,602.02
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