> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sensor-works.com/llms.txt
> Use this file to discover all available pages before exploring further.

# BluVib-M3

> Ultra-low-power wireless triaxial MEMS vibration and temperature sensor with programmable amplitude range and user-selectable operating modes. ATEX variant available.

An ultra-low-power, battery-operated wireless sensor that measures three axes of vibration and temperature. It can operate stand-alone or in a network of multiple sensor devices, with user-programmable operating modes — simply fix it to your machine, set it running, and it measures unattended for up to 5 years in wakeup mode.

<Note>
  **Issue O · May 2026.** Specification subject to change without notice.
</Note>

## Overview

<CardGroup cols={2}>
  <Card title="3-axis vibration" icon="wave-square">
    Measures X, Y and Z vibration with a programmable amplitude range up to ±16 g.
  </Card>

  <Card title="Wide bandwidth" icon="gauge-high">
    DC to 6 kHz for trending, DC to 10 kHz for spectral analysis.
  </Card>

  <Card title="Long battery life" icon="battery-full">
    Field-replaceable battery, up to 5 years depending on measurement intervals.
  </Card>

  <Card title="ATEX option" icon="shield-halved">
    Hazardous-area variant — II 1G Ex ia IIC T4 Ga; dust-certified option available.
  </Card>
</CardGroup>

Also measures temperature (−25 °C to +75 °C), captures up to 80 seconds at 25.6 kHz, mounts directly onto a machine, and is rugged and corrosion resistant.

## Operating modes

User-selectable to suit the application and battery budget.

<AccordionGroup>
  <Accordion title="Wakeup (recommended for best battery life)">
    The sensor powers on at a user-specified interval, broadcasts its presence, and the gateway connects and instructs it to take a measurement. While connected, the gateway can change the operating mode and any other parameters. The gateway then disconnects and the sensor returns to ultra-low-power sleep until the next interval.
  </Accordion>

  <Accordion title="Ready">
    Activated with the magnet, the sensor stays powered and keeps advertising (at reduced power after one minute), allowing repeated connections without re-waking it each time. Best for setup, demonstration and portable/tablet use — not recommended long term, as battery life is significantly reduced.
  </Accordion>

  <Accordion title="Event / Triggered">
    The sensor wakes at regular intervals but stays awake to monitor the input. If the signal crosses a programmed threshold, it captures the required post-trigger data and begins advertising so a client can connect and copy it, then returns to monitoring.
  </Accordion>

  <Accordion title="Logging">
    Operates unconnected, collecting and storing acceleration, velocity, temperature and battery data at a pre-set interval until woken with a magnet, then downloads to a ReST API or on a call for a specific date/time.
  </Accordion>
</AccordionGroup>

## Specification

### Measurement

| Item                    | Specification                                                      |
| ----------------------- | ------------------------------------------------------------------ |
| Number of channels      | 4 (3 × vibration \[x, y, z] + 1 × temperature)                     |
| Accelerometer type      | Ultra-low-power MEMS accelerometer                                 |
| Range                   | Programmable (±2 g, ±4 g, ±8 g, ±16 g)                             |
| Frequency range (±3 dB) | DC to 6 kHz typical (trending & spectral); DC to 10 kHz (spectral) |
| Temperature range       | −25 °C to +75 °C                                                   |
| Temperature accuracy    | ±4 °C                                                              |

### Data acquisition

| Item              | Specification                                       |
| ----------------- | --------------------------------------------------- |
| Sample rate       | Programmable, 256 Hz to 25.6 kHz                    |
| Data block length | 64 to 2,097,152 samples                             |
| Spectral lines    | 100 to 8192k lines (10 kHz @ 25.6 kHz)              |
| Logging storage   | Up to 2,000,000 velocity & temperature measurements |

### Communications

| Item           | Specification                                         |
| -------------- | ----------------------------------------------------- |
| Network        | Bluetooth 5 (backwards compatible to 4.2)             |
| Certifications | Europe: R\&TTE — USA, Canada, International: FCC / IC |

### Mechanical & environmental

| Item                  | Specification               |
| --------------------- | --------------------------- |
| Dimensions            | 33 mm diameter × 92 mm high |
| Mounting              | Internal ¼-28 UNF thread    |
| Operating temperature | −25 °C to +75 °C            |
| Sealing               | IP66                        |

## Variants

| Variant            | Enclosure                           | Weight | Battery      | Hazardous area                                           |
| ------------------ | ----------------------------------- | ------ | ------------ | -------------------------------------------------------- |
| Standard           | Stainless steel base, plastic cover | 170 g  | SAFT LS17500 | —                                                        |
| Lightweight        | Aluminium base, plastic cover       | 100 g  | SAFT LS17500 | —                                                        |
| ATEX (stainless)   | Stainless steel base, plastic cover | 170 g  | SAFT LS14500 | ATEX II 1G Ex ia IIC T4 Ga · ATEX, IECEx, UKEX, CE, RoHS |
| ATEX (lightweight) | Aluminium base, plastic cover       | 100 g  | SAFT LS14500 | ATEX II 1G Ex ia IIC T4 Ga · ATEX, IECEx, UKEX, CE, RoHS |

Standard compliance: CE, RoHS. Battery field-replaceable on all variants. Contact Sensor-Works for dust certification.

## Downloads

<CardGroup cols={1}>
  <Card title="BluVib-M3 datasheet (PDF)" icon="file-pdf" href="https://www.sensor-works.com/wp-content/uploads/2026/06/BluVib-M3-Datasheet.pdf">
    Full printable specification · Issue O, May 2026
  </Card>
</CardGroup>

***

<Info>
  **Sensor-Works Ltd.** · Alba Innovation Centre, Alba Campus, Livingston, West Lothian EH54 7GA · +44 (0)1506 592356 · [www.sensor-works.com](https://www.sensor-works.com)
</Info>