> ## 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 WtW

> Wired-to-wireless acquisition module monitoring two channels of vibration plus a tachometer input, with a field-replaceable battery giving up to five years of unattended operation.

The BluVib Wired-to-Wireless (WtW) brings the environmental robustness of a wired sensor to the BluVib family. An ultra-low-power acquisition module connects to wired low-power accelerometers, measuring two channels of vibration plus a speed input, and transmits over Bluetooth 5 — combining wired performance at the asset with the easy installation and long battery life of a wireless solution.

<Note>
  **Issue P · June 2026.** Specification subject to change without notice.
</Note>

## Overview

<CardGroup cols={2}>
  <Card title="2 vibration channels" icon="wave-square">
    Connects to wired low-power piezo accelerometers, ±20 g range (dependent on accelerometer choice).
  </Card>

  <Card title="Tachometer input" icon="gauge">
    A single speed channel (optocoupled TTL / analogue to ±25 V).
  </Card>

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

  <Card title="Flexible mounting" icon="screwdriver-wrench">
    Bolt/screw locations either side of the case, an underside DIN-mount assembly, or a DIN-rail fixing.
  </Card>
</CardGroup>

The module mounts via bolt/screw locations on either side of the case, an underside DIN-mount assembly, or a DIN-rail fixing. A power-on switch and antenna sit on the top face of the enclosure. Accelerometers connect by wire and mount onto or near the machine via a ¼-28 UNF thread.

Typical applications are condition monitoring of rotating machinery — motors, fans, pumps and gearboxes — and it is well suited to submersible pumps, enclosed compressors and difficult-access measurement points.

## Specification

### Measurement

| Item                    | Specification                             |
| ----------------------- | ----------------------------------------- |
| Number of channels      | 2 × vibration                             |
| Accelerometer type      | Piezo (low power)                         |
| Maximum range           | ±20 g (dependent on accelerometer choice) |
| Frequency range (±3 dB) | 1.5 Hz to 10 kHz                          |
| Tachometer input        | Optocoupled TTL / analogue to ±25 V       |

### Data acquisition & processing

| Item                 | Specification                                                               |
| -------------------- | --------------------------------------------------------------------------- |
| Sample rate          | Programmable, 256 Hz to 25.6 kHz                                            |
| Anti-aliasing filter | Compound analogue / digital                                                 |
| Data block length    | 64 to 32,768 samples                                                        |
| Spectral lines       | 100 to 12,800 lines                                                         |
| Modes                | Continuous, Wake-Up, manual wake-up (push button on the acquisition module) |
| Data memory buffer   | Up to 16 Mb                                                                 |
| Configuration        | Over the radio network                                                      |
| Programming          | Firmware upgrades over the radio network                                    |

### Communications

| Item           | Specification                                         |
| -------------- | ----------------------------------------------------- |
| Network        | Bluetooth 5 Low Energy (all versions)                 |
| Certifications | Europe: R\&TTE — USA, Canada, International: FCC / IC |

### Acquisition module

| Item                  | Specification                                                              |
| --------------------- | -------------------------------------------------------------------------- |
| Enclosure             | Plastic                                                                    |
| Weight                | 250 g                                                                      |
| Dimensions            | 14.5 cm W × 11 cm D × 6 cm H                                               |
| Operating temperature | −25 °C to +75 °C                                                           |
| Sealing               | IP66                                                                       |
| Compliance            | CE, UKCA, RoHS                                                             |
| Battery               | Lithium Thionyl Chloride, 3.6 V, Size A (SAFT LS17500) · field replaceable |
| Battery life          | Up to 5 years (dependent upon measurement intervals)                       |
| Sensor mounting       | Internal ¼-28 UNF thread                                                   |

## Variants

| Model           | Description                                                       |
| --------------- | ----------------------------------------------------------------- |
| BluVib WtW-B    | Battery version (SAFT LS17500, up to 5 years, field replaceable)  |
| BluVib WtW-B-2x | Battery version with 2 piezo vibration accelerometers (4 m leads) |

Contact Sensor-Works for custom configurations and compatible tachometer options.

## Downloads

<CardGroup cols={1}>
  <Card title="BluVib WtW datasheet (PDF)" icon="file-pdf" href="https://www.sensor-works.com/wp-content/uploads/2026/07/BluVib-WtW-Datasheet.pdf">
    Full printable specification · Issue P, June 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>