HG-904A Dual Channel Machinery Frequency Spectrum Analyzer for Vibration Detection

HG-904A Dual Channel Machinery Frequency Spectrum Analyzer Dynamic Balancing Vibration Detector

Imbalance is one of the main causes of machine vibration. It is estimated that about 50 percent of all the faults are caused by imbalance of rotors. The best mean for getting rid of mechanical imbalance is on-site balancing. New HG904A Machinery Analyzer/Balancer is especially useful for this purpose. It can measure the intensity of the vibration; diagnose vibration cause by analyzing the frequency spectrum. It can also be used to measure the rotation speed and vibration phase, and to calculate the imbalance weight and location.

• Amplitude ranges & Frequency Response for overall vibration measurement:

Features:

• Easy to use
• Vector illustration, the balancing process and result are shown clearly at a glance
• Storage of 10 rotors balancing data
• Selectable of trial mass remove or remain
• Decompose of balancing result to two assigned location
• Trial weight range calculated according to the weight of rotor, rotation speed, radius and required balance grade
• Trial mass validity judged automatically
• Measuring RPM, amplitude and phase
• AD:16 bit
• On-site 400,800,1600,3200,6400,12800 lines FFT spectrum and diagnosis function
• Dual-channel simultaneous data collection
• Hardware envelop demodulation for bearing and gear diagnosis
• Transfer function for measuring natural frequency
• Waveform and spectrum display by large LCD
• Storage of vibration values and vibration waveform

Operation condition

• Temperature range: from 5°C to 50°C
• Relative humidity: < 85%, unsaturated
• Without caustic gases
• Without strong electric-magnetic field & strong impact

Safety

The HG904A are not permitted to contact with running part of machine.

Specifications:

• Rotation speed range for dynamic balancing: 70-13,000 r/min
• Auto-range and manual-range selectable
• Measuring accuracy of vibration: 5 %

l Sensors: Piezoelectric accelerometer, Magnetoelectricity velocity, Eddy displacement and etc.

• 8^th-order ellipse anti-aliasing filter, RPM band-pass filter
• Input signal: Accelerometer, ICP and voltage

• Frequency span of spectrum analysis: 100, 200, 500, 1K, 2K, 5K, 10K,20K,35KHz

89.6KHz only for 1-channel sampling(spectrum analysis 35KHz),

51.2KHz for 2-channel sampling(spectrum analysis 20KHz).

• Data storage: 8G

• Notepad: 10 condition codes for visual inspection
• Output: USB for communication with PC
• Power: Ni-MH rechargeable battery for 8 hours continuous operation, low battery warning
• Operating Environment: 0~55 ^oC, 90% humidity non-condensing
• Rotating speed measurement with photocell sensor
• Dynamic Range: 60dB with 48dB adjustable gain range
• Dimensions: 21×13×4 cm; Weight: 1.2 kg (Include batteries)

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  Pack List

  New HG904A Vibration Data Collector 1
  Accelerometer 2
  Magnetic Mount 2
  Steel Extension Probe 1
  Battery Charger 1
  Accelerometer Cable 3
  USB Communication Cable 1
  Balancing Module 1

  Tacho/Trigger Sensor and cable 1
  Reflector Paper set 1
  Quick Start Guide 1
  Software CD 1
  Certificates of HG904A and sensors 3
  Carrying Case 1