Portable Four or Two Channels Vibration Analyzer Data Collector Multi-Functional Instrument
Product Overview
The HG-904A Dual Channel Machinery Frequency Spectrum Analyzer is designed for dynamic balancing and vibration detection. Imbalance is one of the main causes of machine vibration, accounting for approximately 50% of all faults. This analyzer provides on-site balancing capabilities by measuring vibration intensity, diagnosing causes through frequency spectrum analysis, and calculating imbalance weight and location.
Key Specifications
| Attribute |
Value |
| AD |
16 bit |
| Rotation speed range for dynamic balancing |
70-13,000 r/min |
| Measuring accuracy of vibration |
5% |
| Data storage |
8G |
| Input signal |
Accelerometer, ICP and voltage |
| Amplitude ranges |
Frequency Response |
| Displacement: 0.003 - 5 mm peak-peak |
10 - 500 Hz |
| Velocity: 0.2 - 200mm/s true RMS |
10 - 1000 Hz |
| Acceleration: 0.5 - 250m/s² peak |
20 - 5000 Hz |
| Envelope: 0.1 - 20unit true RMS |
5-1000Hz from 15-40 KHz |
| Voltage: 0.1 - 10V peak-peak |
10 - 10000 Hz |
Key Features
- Easy to use with vector illustration for clear balancing process visualization
- Storage for 10 rotors balancing data
- Selectable trial mass remove or remain option
- Automatic trial weight range calculation based on rotor weight, speed, radius, and required balance grade
- Automatic trial mass validity judgment
- Dual-channel simultaneous data collection
- Hardware envelop demodulation for bearing and gear diagnosis
- Large LCD display for waveform and spectrum visualization
- 16-bit AD conversion
- On-site FFT spectrum analysis (400-12800 lines)
- Transfer function for measuring natural frequency
Technical Specifications
Rotation speed range for dynamic balancing: 70-13,000 r/min
Auto-range and manual-range: Selectable
Measuring accuracy of vibration: 5%
Sensors: Piezoelectric accelerometer, Magnetoelectricity velocity, Eddy displacement
Filter: 8th-order ellipse anti-aliasing filter, RPM band-pass filter
Frequency span of spectrum analysis: 100Hz to 35KHz
Dynamic Range: 60dB with 48dB adjustable gain range
Dimensions: 21×13×4 cm
Weight: 1.2 kg (including batteries)
Operating Conditions
Temperature range: 5°C to 50°C
Relative humidity: <85%, unsaturated
Not for use in caustic gas environments
Avoid strong electromagnetic fields and strong impacts
Safety Note: Do not contact with running machine parts
Power & Connectivity
Battery: Ni-MH rechargeable battery for 8 hours continuous operation
Low battery warning system
Connectivity: USB output for PC communication
Package Contents
- 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)
