The Emerson A6120 is a dual-channel absolute shaft vibration monitor module designed for the AMS 6500 Machinery Health System. It measures absolute vibration using seismic velocity or acceleration sensors, providing essential data for turbine, compressor, pump, and motor protection.
Unlike relative vibration monitors such as the A6110, the A6120 focuses on absolute vibration measurement, making it ideal for monitoring casing or bearing housing vibrations to detect imbalance, misalignment, or mechanical faults.
| Feature | Details |
|---|---|
| Model Number | A6120 |
| Manufacturer | Emerson Automation Solutions |
| Type | Dual-channel absolute shaft vibration monitor |
| System Compatibility | AMS 6500 Machinery Health Monitoring System |
| Function | Measures absolute vibration using seismic velocity or acceleration sensors |
| Channels | 2 independent vibration monitoring channels |
| Supported Sensors | Velocity sensors (moving-coil), piezoelectric accelerometers |
| Frequency Response | 10 Hz – 1 kHz (velocity), 10 Hz – 10 kHz (acceleration) |
| Measurement Modes | RMS, peak, peak-to-peak |
| Accuracy | ±0.25% full scale |
| Resolution | 16-bit A/D conversion |
| Standards Compliance | API 670, DIN 45670 |
| Analog Outputs | 0/4–20 mA proportional outputs, buffered dynamic outputs |
| Isolation | Channel-to-channel and channel-to-backplane |
| Power Supply | 24 VDC nominal |
| Power Consumption | ~6 W typical |
| Operating Temperature | –40°C to +70°C |
| Storage Temperature | –40°C to +85°C |
| Humidity | 5–95% non-condensing |
| Dimensions | 3U plug-in module for AMS 6500 chassis |
| Weight | 0.9–1.0 kg |
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