Wireless Vibration Monitoring by Aurolex
The ABC_mems is a new model in the ABC series of smart vibration datalogers. It can record accelerations, vibrations, velocities and inclinations. It includes a 3-axis MEMS accelerometer, an accurate date/time clock and a non-volatile 128 Mb recording memory. Depending on the settings it can record acceleration or velocity signals and/or RMS levels for months. Its very small size allows it to be attached to, or embedded within, the monitored equipment. Filter can be set according to SBR-A. Weighted amplitud according to SBR-A. Implemented standards DIN, BS, SBR etc.
Price information : http://geluid.eu/gb/vibration-meter-overview/vibration-monitoring-building-damage-
It has the following new features:
Up to 32 devices online. Size 76,2mm x 39,4mm x 20,6mm. Implemented stadards
• Can measure, record and trigger on velocity signals, in addition to acceleration signals.
• Has WiFi reporting and email alarms. Self calibrating.
• Includes an accelerometer with exceptional noise floor (20 times better noise floor than the Vibration -16g sensor).
• Sampling rates up to 4 kHz.
• Improved anti-aliasing filter.
The ABC_mems includes the following features:
• 3-Axis integral MEMS accelerometer
• Measures and records:
o Raw acceleration or velocity signals
o Acceleration or velocity statistics
o Vibration or velocity levels
o Inclinations
• All-digital design.
• Integrated oscilloscope function that can show the vibration or velocity signals in real time.
• Allows the observation of recorded data while the recording is ongoing.
• Works standalone, or USB or WiFi connected for setup and data transfer to PC.
• Long life internal rechargeable battery that recharges from USB.
• Self-calibrated using the earth’s gravity as a reference.
• Observes and records 100% of the acceleration signals (no missed samples).
• Editable individual custom ID for easier instrument management.
• Completely sealed weatherproof enclosure.
2 Applications
• Building-health monitoring on construction sites.
• Long-term seismic monitoring.
• Long-term inclination monitoring.
• Long-term measurement and recording of acceleration signals, velocity signals, signal statistics (peaks and average) and RMS levels.
• Continuous monitoring of machinery wear.
Category
Specification
Number of Axes
• 3
Acceleration Sensor
• MEMS 3-axes
Dynamic Range (-8g)
• +-8 g
Bandwidth High Limit
• Adjustable, up to 2 kHz (@ 4 kHz Sampling Rate)
Bandwidth Low Limit
• DC (High-Pass Filter Bypass)
• Adjustable from 10 mHz to Fs/2 (High-Pass Filter On)
Acceleration Noise X-Y Axes (Typical)
Note: Acceleration noise is primarily affected by the sampling rate. The higher the sampling rate, the higher the noise.
• -82 dBg (80 μg RMS) @ 125 Hz Sampling Rate
• -66 dBg (500 μg RMS) @ 4 kHz Sampling Rate
Acceleration Noise Z Axis (Typical)
Note: Acceleration noise is primarily affected by the sampling rate. The higher the sampling rate, the higher the noise.
• -80 dBg (100 μg RMS) @ 125 Hz Sampling Rate
• -64 dBg (600 μg RMS) @ 4 kHz Sampling Rate
Velocity Noise X-Y Axes (Typical)
Note: Velocity noise is primarily affected by the high-pass cutoff frequency. The lower the cutoff frequency, the higher the noise.
• -94 dB-m/s (20 μm/s RMS) @ 1 Hz High-Pass Cutoff
• -103 dB-m/s (7 μm/s RMS) @ 10 Hz High-Pass Cutoff
Velocity Noise Z Axis (Typical)
Note: Velocity noise is primarily affected by the high-pass cutoff frequency. The lower the cutoff frequency, the higher the noise.
• -92 dB-m/s (25 μm/s RMS) @ 1 Hz High-Pass Cutoff
• -101 dB-m/s (9 μm/s RMS) @ 10 Hz High-Pass Cutoff
Inclination Angle Noise
Note: Measured using acceleration average, with a log interval of 1s, with the instrument positioned with the Z axis vertical, and X and Y axes horizontal
• 1 ��−3°
Inclination Angle Temperature Stability
Note: Measured using acceleration average, with a log interval of 1s, with the instrument positioned with the Z axis vertical, and X and Y axes horizontal
• 0.2° over the temperature range -20 °C to 60 °C
Connectivity
• USB
• WiFi
Measurements
• Raw Acceleration (g or m/s2)
• Raw Velocity (m/s)
• Min, Max and Avg Acceleration values (g or m/s2)
• Min, Max and Avg Velocity values (m/s)
• Inclinations