VSEW_mk4_MQTT
574.00 $
Built for developers and OEMs.
Open MQTT wireless protocol. Publish vibration data directly to your own broker, cloud platform or IoT system. Fully documented protocol: VSEW_mk4 MQTT Protocol.
Open MQTT wireless protocol. Publish vibration data directly to your own broker, cloud platform or IoT system. Fully documented protocol: VSEW_mk4 MQTT Protocol.
The Wireless Vibration Meter Data Logger – VSEW_mk4 – MQTT is similar in form, function and performance to the VSEW_mk4 8g. It has been designed with an open wireless protocol based on MQTT, for developers and OEMs who need to integrate it to their own platform while using wireless connectivity.
The instrument publishes recorded data (acceleration, velocity, vibration levels, inclinations) and vital signs to any standard MQTT broker. The communication protocol is fully documented.
VSEW mk4 MQTT vs Standard Models
- Open MQTT wireless protocol — publish to any standard broker
- Same hardware, sensor and noise floor as the VSEW mk4 8g
- Virtual COM port interface for USB configuration (Com Protocol)
- Preset filters support DIN4150-2, DIN4150-3 and ISO 2631-2 standards
- No proprietary email alerts — use your own notification system via MQTT
Need built-in email alerts and cloud access? The VSEW mk4 8g uses Convergence Instruments' proprietary WiFi protocol with automatic email alerts and optional 24/7 Cloud Data Access.
VSEW mk4 MQTT Applications
- Integration into custom IoT vibration monitoring platforms
- OEM embedding in industrial equipment and machinery
- Building-health monitoring with third-party dashboards
- Multi-sensor networks publishing to a central MQTT broker
- Long-term measurement of acceleration, velocity, statistics and RMS levels
This instrument is similar in form, function and performance to the VSEW_mk4. It has been designed with an open wireless protocol based on MQTT, for developers and OEMs who need to integrate it to their own platform while using wireless connectivity.
See the VSEW_mk4 for specific information about the instrument itself.
🔌 Why the VSEW mk4 MQTT?
Open MQTT protocol — publish to any standard broker
±8 g dynamic range — same sensor as the VSEW mk4 8g
Fully documented — MQTT + USB VCP protocols open
3-axis MEMS — acceleration + velocity + inclination
128 Mb memory — months of continuous recording
IP57 sealed — weatherproof, 65 g, deploy anywhere
Key Features
The VSEW mk4 MQTT combines professional vibration sensing with an open wireless protocol — designed for developers and OEMs who need full integration control.
Open protocol
MQTT Wireless Protocol
Publish vibration data directly to any standard MQTT broker. Integrate with AWS IoT, Azure, Home Assistant, Node-RED, or your own custom platform. Fully documented protocol.
Ultra-Low Noise Floor
Same ±8 g sensor and 110 μg RMS noise floor as the VSEW mk4 8g. Detects subtle structural vibrations, seismic activity and early-stage machinery wear.
DIN4150-2 & ISO2631-2
Built-in preset filters for direct support to vibration standards. Results accessible via MQTT topics — feed directly into your compliance reporting system.
IP57 Weatherproof & 65 g
Integrally potted ABS enclosure protected against dust and temporary immersion. Compact enough to embed inside OEM products or deploy at remote outdoor sites.
Product Description
The Wireless Vibration Meter Data Logger – VSEW_mk4 – MQTT is similar in form, function and performance to the VSEW_mk4 8g. It has been designed with an open wireless protocol based on MQTT, for developers and OEMs who need to integrate it to their own platform while using wireless connectivity.
The instrument publishes recorded data (acceleration, velocity, vibration levels, inclinations) and vital signs to any standard MQTT broker. It includes a 3-axis MEMS accelerometer, an accurate date/time clock and a non-volatile 128 Mb recording memory.
🔌 Key Differences vs Standard VSEW mk4
- Open MQTT wireless protocol instead of proprietary WiFi reporting MQTT
- Publishes to any standard MQTT broker (Mosquitto, AWS IoT, Azure, HiveMQ, etc.)
- No built-in email alerts — implement your own notification logic via MQTT
- Same sensor, same noise floor, same mechanical design as the VSEW mk4 8g
VSEW mk4 MQTT Applications
- Integration into custom IoT vibration monitoring platforms
- OEM embedding in industrial equipment and machinery
- Building-health monitoring with third-party dashboards
- Multi-sensor networks publishing to a central MQTT broker
- Long-term measurement of acceleration, velocity, statistics and RMS levels
MQTT Protocol Integration
The VSEW mk4 MQTT connects to any standard MQTT broker over WiFi and publishes vibration data on configurable topics. The protocol is fully documented in the VSEW_mk4 MQTT Protocol document.
Published Data
- Acceleration signals (raw or statistics) on X, Y, Z axes
- Velocity signals (raw or statistics) on X, Y, Z axes
- RMS vibration and velocity levels
- Inclination measurements
- Instrument vital signs (battery voltage, temperature)
Example MQTT Topic Structure
convergence/{device_id}/acceleration
convergence/{device_id}/velocity
convergence/{device_id}/rms_level
convergence/{device_id}/inclination
convergence/{device_id}/vitals
convergence/{device_id}/velocity
convergence/{device_id}/rms_level
convergence/{device_id}/inclination
convergence/{device_id}/vitals
Compatible Brokers & Platforms
- Eclipse Mosquitto, HiveMQ, EMQX
- AWS IoT Core, Azure IoT Hub, Google Cloud IoT
- Node-RED, Home Assistant, Grafana
- Any standard MQTT 3.1.1 broker
The USB Virtual COM port interface (Com Protocol) is also available for local configuration and data transfer.
Specifications
| Sensor | |
| Number of Axes | 3 |
|---|---|
| Acceleration Sensor | MEMS Digital 3-axis |
| Dynamic Range | ±8 g (same sensor as VSEW mk4 8g) |
| 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) | 110×10⁻⁶ g RMS @ 125 Hz Sampling Rate 750×10⁻⁶ g RMS @ 4 kHz Sampling Rate |
| Accel. Noise (band-limited 1Hz–100Hz) | 200 μg RMS @ 4 kHz Sampling Rate |
| Velocity Noise (Typical – flat response) | 35 μm/s RMS @ 1 Hz High-Pass Cutoff 12 μm/s RMS @ 10 Hz High-Pass Cutoff |
| Connectivity | |
| Wireless Protocol | Open MQTT — publishes to any standard MQTT 3.1.1 broker |
| USB | Virtual COM port interface with open protocol |
| WiFi Radio Standard | IEEE 802.11 b/g/n (2.4 GHz-only transceiver) |
| WiFi Band | 2.4 GHz band (Channels 1 to 11, 2412 MHz to 2462 MHz) |
| WiFi Max Power | 100 mW (20 dBm) |
| Email Alarms | Not available — use MQTT subscriptions for custom alerts |
| Measurements | |
| Measurements | Raw Acceleration (g or m/s²), Raw Velocity (m/s), Min/Max/Avg Acceleration, Min/Max/Avg Velocity, Inclinations, Min/Max/Avg RMS Vibration level (linear or dB), Min/Max/Avg RMS Velocity level (linear or dB) |
| Spectral Display | 3-Axes 1024-point Power Spectrum — dB or Lin Scale |
| Recording | |
| Duty Rate | 100% — No Missed Samples |
| 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 |
| Data Retention | > 20 Years |
| Power | |
| Battery Type | Integral Li-Poly — USB-Rechargeable |
| Battery Autonomy | Up to 1 year in Idle 16 to 125 days while recording, depending on settings |
| Physical | |
| Temperature Range | −20 °C to 60 °C (−4 °F to 140 °F) |
| Weight | 65 g |
| 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 | VSEW mk4 200g | VS E-16g | mk4 MQTT This product |
|
|---|---|---|---|---|---|
| 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 |
| 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 Integration
The VSEW mk4 MQTT is designed for developers and OEMs who need to integrate professional vibration sensing into their own platforms and products.
Custom IoT Platforms
Publish vibration data to your own MQTT broker and build custom dashboards with Grafana, Node-RED, or your proprietary platform. Full control over data flow, storage and alerting logic — no vendor lock-in.
OEM Product Integration
Embed the VSEW mk4 MQTT inside your own industrial equipment, monitoring systems or turnkey solutions. At 65 g and IP57, it fits inside enclosures and housings. Your customers see your brand — the sensor works silently underneath.
Cloud Service Providers
Connect directly to AWS IoT Core, Azure IoT Hub, Google Cloud IoT or any MQTT-compatible cloud service. Build scalable vibration monitoring solutions for your clients without developing the sensor hardware from scratch.
Multi-Sensor Networks
Deploy dozens of VSEW mk4 MQTT devices across a site, all publishing to one central broker. Build a distributed vibration monitoring mesh for construction sites, industrial facilities or infrastructure projects — with your own alerting and compliance logic.
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