Wireless Vibration Meter Data Logger | VSEW mk2 – 8g
VSEW mk2 – 8g
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The Wireless Vibration Meter Data Logger – VSEW_mk2 – 8g is a new model in the VSE 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.
The Wireless Vibration Meter Data Logger – VSEW_mk2 – 8g model is an evolution of the Vibration Sentry E model.
The VSEW_mk2 has the following new features:
- Can measure, record and trigger on velocity signals, in addition to acceleration signals.
- Has WiFi reporting and email alarms.
- Includes an accelerometer with exceptional noise floor (20 times better noise floor than the Vibration Sentry E – 16g).
- Sampling rates up to 4 kHz.
- Improved anti-aliasing filter.
The VSEW_mk2 vibration meter data logger is ideal to monitor very low vibration levels, such as ground tremors and floor vibrations.
- 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
|Number of axes||3|
|Acceleration Sensor||MEMS 3-axes|
|Dynamic Range||+-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 E − 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|
|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, Min, Max and Avg RMS Vibration level (linear or dB, g or m/s2), Min, Max and Avg RMS Velocity level (linear or dB, m/s)|
|Alarm Emails||Acceleration Signal Threshold (X, Y, Z axis), Velocity Signal Threshold (X, Y, Z axis), RMS Acceleration Level Threshold (X, Y, Z axis), RMS Velocity Level Threshold (X, Y, Z axis), Battery|
|Duty Rate of Signal Capture||100% – No Missed Samples|
|Spectral Display||3-Axes 1024-point Power Spectrum – dB or Lin Scale|
|Modes of Operation||Idle (Micro-Power), USB-Connected (Active), Recording (Stand-alone), Auto-Rec – Stand-Alone (Idle when no activity / Recording while activity is present)|
|Calibration||Self-Calibration using the earth’s gravity as a reference|
|Battery Type||Integral Li-Poly – USB-Rechargeable|
|Recharge Time||2 h 30 (Typical)|
|Battery Autonomy (Full-Charge)||Up to one year while in Idle, 16 days to 125 days while recording, depending on settings|
|Battery Life||> 300 Charge/Discharge Cycles|
|Temperature Range||-20°C to 60°C (-4°F to 140°F)|
|Recording Memory||Non-Volatile Flash Memory|
|Recording Memory Capacity||128 Mb, (Ex: can continuously record single-axis raw signals for 17 min @ 4 kHz Sampling Rate), (Ex: can continuously record 3-axes full-statistics levels at 1s intervals for 5 days), (Ex: can continuously record 3-axes full statistics levels a 1min intervals for 10 months.)|
|Recording/Erasure Cycles||Greater than 100 000|
|Data Retention||Greater than 20 Years|
|Dimensions||7.62 x 3.94 x 2.06 cm, (3” x 1.55” x 0.81”)|
|Construction||Integrally Potted Weather-Proof ABS Enclosure|