VSEW mk4 40g
574.00 $
Need lower sensitivity for structural monitoring?
The VSEW mk4 8g offers an ultra-low noise floor (110 μg RMS) ideal for DIN4150-2 compliance and ground vibration monitoring.
The VSEW mk4 8g offers an ultra-low noise floor (110 μg RMS) ideal for DIN4150-2 compliance and ground vibration monitoring.
The Vibration Meter Data Logger – VSEW_mk4 – 40g is a high-range model in the VSE series of smart vibration dataloggers. It records 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 (65 g) allows it to be attached to, or embedded within, the monitored equipment.
New in the VSEW mk4
- Virtual COM port interface for custom application integration (see VSEW_mk4 Com Protocol)
- WiFi™ auto-fallback to any open access point ("W" model only)
- Email alerts to multiple addresses ("W" model only)
Need even higher range for impact detection? The VSEW mk4 200g handles extreme accelerations up to ±200 g for shock and impact monitoring.
VSEW mk4 40g Applications
- Road shipment monitoring and vibration recording
- Medium-range vibration recording
- Long-term measurement of acceleration signals, velocity signals, statistics (peaks & average) and RMS levels
- Continuous monitoring of machinery wear
The Vibration Meter Data Logger – VSEW_mk4 – 40g is a new model in the VSE series of smart vibration dataloggers. 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 VSEW_mk4 has the following new features:
- Virtual COM port interface that allows configuration and measurements to be read by a custom application (see VSEW_mk4_Com_Protocol.pdf)
- Added filters and settings to support the DIN4150-2 and ISO2631-2 standards directly.
- WiFi™ connection can use any open access point if the specified access point is not working (“W” model only).
- Email alerts can now be sent to multiple addresses (“W” model only).
VSEW_mk4 Applications
- Long-term seismic monitoring.
- Shipment monitoring
- Long-term measurement and recording of acceleration signals, velocity signals, signal statistics (peaks and average) and RMS levels.
- Continuous monitoring of machinery wear.
In stock (can be backordered)
📐 Why the VSEW mk4 40g?
±40 g dynamic range — ideal for road shipment & machine monitoring
Velocity measurement — real-time velocity from acceleration
3-axis MEMS — acceleration + velocity + inclination
USB + WiFi — VCP protocol + wireless reporting
128 Mb memory — months of continuous recording
IP57 sealed — weatherproof, 65 g, field-ready
Key Features
The VSEW mk4 40g offers extended dynamic range for road shipment monitoring, machine health and high-acceleration vibration recording.
High range
±40 g Dynamic Range
Captures higher accelerations than the 8g model — ideal for road shipment monitoring and medium-impact events on machinery.
Extended Dynamic Range
The ±40 g range captures medium-to-high accelerations typical of road transport, package handling and industrial machinery — without the reduced sensitivity of the ±200 g model.
3-Axis MEMS Accelerometer
Measures acceleration, velocity, vibration levels and inclinations on all three axes. 100% duty rate — zero missed samples.
IP57 Weatherproof & 65 g
Integrally potted ABS enclosure protected against dust and temporary immersion. Small enough to embed inside containers or attach to equipment.
Product Description
The Vibration Meter Data Logger – VSEW_mk4 – 40g is a high-range model in the VSE series of smart vibration dataloggers. 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.
VSEW mk4 40g Applications
- Road shipment monitoring and vibration recording
- Medium-range vibration recording
- Long-term measurement and recording of acceleration signals, velocity signals, signal statistics (peaks and average) and RMS levels
- Continuous monitoring of machinery wear
The VSEW mk4 includes the following features
- Virtual COM port interface that allows configuration and measurements to be read by a custom application (see VSEW_mk4 Com Protocol) NEW
- 3-Axis integral MEMS accelerometer
- Measures and records:
- Raw acceleration or velocity signals
- Acceleration or velocity statistics
- Vibration or velocity levels
- Inclinations
- All-digital design
- Integrated oscilloscope function — view vibration or velocity signals in real time
- Observe recorded data while the recording is ongoing
- Works standalone, or USB / WiFi connected for setup and data transfer to PC
- Long-life internal rechargeable battery (USB-rechargeable)
- Self-calibrated using the earth's gravity as a reference
- 100% duty rate — observes and records every sample (no missed samples)
- Editable individual custom ID for easier instrument management
- Completely sealed weatherproof enclosure (IP57)
Specifications
| Sensor | |
| Number of Axes | 3 |
|---|---|
| Acceleration Sensor | MEMS Digital 3-axis |
| Dynamic Range | ±40 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) |
| Noise Performance | |
| Accel. Noise (Typical – flat response) | 800×10⁻⁶ g RMS @ 125 Hz Sampling Rate 4×10⁻³ g RMS @ 4 kHz Sampling Rate |
| Velocity Noise (Typical – flat response) | 150 μm/s RMS @ 1 Hz High-Pass Cutoff 50 μm/s RMS @ 10 Hz High-Pass Cutoff |
| Connectivity | |
| Connectivity | USB (Virtual COM port interface with open protocol) WiFi ("W" Model only) |
| WiFi Radio Standard | IEEE 802.11 b/g/n (2.4 GHz-only transceiver) |
| WiFi Radio Certification | FCC, IC, Japan, Korea, CE |
| WiFi Band | 2.4 GHz band (Channels 1 to 11, 2412 MHz to 2462 MHz) |
| WiFi Max Power | 100 mW (20 dBm) |
| Measurements & Alarms | |
| Measurements | Raw Acceleration (g or m/s²), Raw Velocity (m/s), Min/Max/Avg Acceleration (g or m/s²), Min/Max/Avg Velocity (m/s), Inclinations, Min/Max/Avg RMS Vibration level (linear or dB), Min/Max/Avg RMS Velocity level (linear or dB) |
| Alarm Emails | Acceleration Signal Threshold (X, Y, Z), Velocity Signal Threshold (X, Y, Z), RMS Acceleration Level Threshold (X, Y, Z), RMS Velocity Level Threshold (X, Y, Z), Battery |
| Spectral Display | 3-Axes 1024-point Power Spectrum — dB or Lin Scale |
| Recording | |
| Duty Rate | 100% — No Missed Samples |
| Sampling Clock Accuracy | 1% |
| Date-Time Clock Accuracy | 30 ppm |
| Calibration | Self-Calibration using the earth's gravity as a reference |
| Recording Memory | Non-Volatile Flash Memory — 128 Mb |
| Recording Capacity Examples | 17 min single-axis raw signals @ 4 kHz 5 days 3-axes full-statistics @ 1 s intervals 10 months 3-axes full-statistics @ 1 min intervals |
| Recording/Erasure Cycles | > 100,000 |
| Data Retention | > 20 Years |
| Modes of Operation | |
| Modes | Idle (Micro-Power), USB-Connected (Active), Recording (Stand-alone), Auto-Rec — Idle when no activity / Recording while activity is present |
| Power | |
| Battery Type | Integral Li-Poly — USB-Rechargeable |
| Recharge Time | 2 h 30 (Typical) |
| Battery Autonomy | Up to 1 year in Idle 16 to 125 days while recording, depending on settings |
| Battery Life | > 300 Charge/Discharge Cycles |
| Physical | |
| Temperature Range | −20 °C to 60 °C (−4 °F to 140 °F) |
| Weight | 65 g |
| Construction | Integrally Potted Weather-Proof ABS Enclosure |
| IP Rating | IP57 — Protected against dust and temporary immersion |
Talk to an expert
Which Model to Choose?
Which Vibration Meter Is Right for You?
Compare all Convergence Instruments vibration meters side by side
| VSEW mk4 8g |
VSEW mk4 40g
This product |
VSEW mk4 200g | VS E-16g | mk4 MQTT | |
|---|---|---|---|---|---|
| Product Page | View → | — | View → | View → | View → |
| Sensor & Range | |||||
| Dynamic Range | ±8 g | ±40 g | ±200 g | ±16 g | Depends on model |
| Memory | 128 Mb | 128 Mb | 128 Mb | 128 Mb | 128 Mb |
| Measures Velocity | ✓ | ✓ | ✓ | — | ✓ |
| Connectivity & Alerts | |||||
| Open USB Protocol (VCP) | ✓ | ✓ | ✓ | — | ✓ |
| WiFi Reporting | ✓ | ✓ | ✓ | — | ✓ |
| Email Alarms | ✓ | ✓ | ✓ | — | — |
| Visual Alarms | — | — | — | ✓ | — |
| Features | |||||
| Timer Start | ✓ | ✓ | ✓ | ✓ | ✓ |
| High-Precision Trigger (80 ms Pretrig) | ✓ | ✓ | ✓ | ✓ | ✓ |
| Time Zone Aware | ✓ | ✓ | ✓ | ✓ | ✓ |
| Settings Retained Through Reset | ✓ | ✓ | ✓ | ✓ | ✓ |
| Target Application | |||||
| Impacts | — | — | ✓ | — | DoM |
| Road shipment Monitoring | — | ✓ | ✓ | ✓ | DoM |
| Inclinometer | ✓ | — | — | ✓ | DoM |
| Low-Amplitude Vibrations | ✓ | — | — | — | DoM |
| Ground Vibrations / Construction | ✓ | — | — | — | DoM |
| DIN4150-2 | ✓ | — | — | — | DoM |
| Machine Monitoring | ✓ | ✓ | — | ✓ | DoM |
| Raw-Signal Recording | ✓ | ✓ | ✓ | ✓ | ✓ |
| Noise Floor | |||||
| X-Y Axes | 110 μg @ 125 Hz 750 μg @ 4 kHz 200 μg RMS acceleration noise RMS @ 4kHz sampling rate (band-limited to 1Hz-100Hz) |
800 μg @ 125 Hz 4 mg @ 4 kHz |
31 mg @ 100 Hz 125 mg @ 3.2 kHz |
2 mg @ 100 Hz 10 mg @ 3.2 kHz |
DoM |
| Z Axis | 110 μg @ 125 Hz 750 μg @ 4 kHz 200 μg RMS acceleration noise RMS @ 4kHz sampling rate (band-limited to 1Hz-100Hz) |
800 μg @ 125 Hz 4 mg @ 4 kHz |
36 mg @ 100 Hz 160 mg @ 3.2 kHz |
3.6 mg @ 100 Hz 16 mg @ 3.2 kHz |
DoM |
Built for These Applications
The VSEW mk4 40g excels in medium-to-high acceleration monitoring where extended range and velocity measurement are critical.
Road Shipment Monitoring
Record vibrations and shocks during road transport and trucking. The ±40 g range captures the acceleration events typical of package handling and vehicle vibrations without clipping.
Machine Condition Monitoring
Attach to rotating equipment, motors, compressors or industrial machinery to track wear over time. The velocity measurement capability and 100% duty rate give you complete vibration profiles for predictive maintenance.
Medium-Range Vibration Recording
Record vibrations and accelerations in the medium range (up to ±40 g) that would saturate the 8g model. Ideal for environments with occasional higher shocks alongside normal vibration levels. For seismic monitoring, we recommend the VSEW mk4 8g with its lower noise floor and DIN4150-2 support.
Remote & Cloud Monitoring
Pair with the 24/7 Cloud Data Access for real-time wireless monitoring. WiFi email alerts notify you instantly when vibration thresholds are exceeded at remote sites.
Vibration Meter Buyer's Guide
Why choose the ±40 g range?
The ±40 g range is the sweet spot for road shipment monitoring and machine vibration. It captures the acceleration events typical of truck transport (5–15 g), package handling (10–30 g) and medium-impact industrial vibrations — without the reduced sensitivity of the ±200 g model. For lower-amplitude structural monitoring, consider the VSEW mk4 8g.
Road shipment monitoring best practices
Place the VSEW mk4 40g inside or firmly attached to the package being monitored. Use the Timer Start feature to begin recording at a scheduled departure time. The 128 Mb memory records weeks of statistics at 1-minute intervals, giving you a complete vibration profile of the entire road journey.
Velocity measurement capability
Unlike basic accelerometers, the VSEW mk4 40g calculates velocity in real time from the acceleration signal. Velocity is the preferred metric for many machine condition monitoring standards and provides a direct indicator of machinery health and bearing wear.
100% duty rate — why it matters
Many competing vibration loggers sample intermittently, potentially missing short-duration events. The VSEW mk4 40g records every single sample with zero gaps. For road shipment monitoring, this means no shock event goes unrecorded — critical for insurance claims and damage investigations.
Choosing the right dynamic range
Dynamic range determines the maximum acceleration the sensor can measure. The ±8 g model is ideal for low-amplitude structural vibrations and DIN4150-2 compliance. The ±40 g model covers road shipment and machine monitoring. The ±200 g model handles extreme impacts, drops and crash testing. All models share the same form factor, software and connectivity — only the sensor range and noise floor differ.
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