LoRaWAN predictive maintenance sensor – vibration and temperature monitoring: BoB ASSISTANT Series | WATTECO

The BoB ASSISTANT Series consists of autonomous LoRaWAN® sensors designed for the remote condition monitoring of industrial equipment such as pumps, ventilation systems, motors and cooling units.

Installed directly on the monitored equipment, the sensor analyzes its vibration signature and completes a 7-day learning period. It can then detect changes in vibration behaviour and transmit an alert through a public or private LoRaWAN® network, helping maintenance teams identify potential equipment deterioration before a failure occurs.

The series includes the standard BoB ASSISTANT and the BoB ASSISTANT ATEX Zone 1 for industrial locations requiring the specified ATEX certification.

Advantages

• Predictive equipment monitoring: detects vibration drift after an initial 7-day learning period.
• Remote LoRaWAN® communication: transmits operating data and alerts through a public or private network.
• On-board data processing: vibration information is analyzed locally before transmission.
• Configurable vibration alerts: the default 25% vibration drift threshold can be configured to 10%, 15% or 20% by Downlink command.
• Machine status detection: provides configurable machine start and stop notifications.
• Long battery operation: more than 4 years for the standard model and more than 3 years for the ATEX Zone 1 model under the specified operating configuration.
• Simple installation: supplied with two magnets and nuts, with alternative installation by gluing, riveting or screwing.
• Stored equipment learning: the learned vibration profile is retained in flash memory after a restart or battery replacement.

Main features

• Communication protocol: LoRaWAN®, Class A.
• Activation: Over-The-Air Activation (OTAA).
• Data encryption: AES128.
• Radio frequency: EU 863 to 870 MHz.
• Transmit power: +14 dBm.
• Receiver sensitivity: -140 dBm.
• Sampling period: 10 minutes, configurable.
• Standard transmission cycle: every 180 minutes.
• Low-frequency vibration range: 0 to 400 Hz, with an accuracy of ±3.125 Hz.
• High-frequency vibration range: 0 to 12,800 Hz, with an accuracy of ±100 Hz.
• Temperature measurement accuracy: ±1°C.
• Reported information: machine operating time, vibration drift rate, battery level, temperature and predictive failure probability.
• User interface: push button, RGB status LED and product identification QR code.
• Enclosure: 76 × 79 × 23 mm, 75 g, IP68 ABS housing with UL94-HB fire resistance.
• Replaceable battery: battery level transmitted as a remaining percentage.

Typical applications

• Remote condition monitoring of industrial motors.
• Predictive maintenance of pumps and pumping installations.
• Monitoring of ventilation and air-handling equipment.
• Monitoring of cooling units and other rotating machinery.
• Detection of vibration drift indicating changing equipment condition.
• Monitoring of machine operating time and start/stop status.
• Optimization and scheduling of industrial maintenance operations.
• Condition monitoring in ATEX Zone 1 environments with the certified model.

Why choose the BoB ASSISTANT Series

The BoB ASSISTANT Series combines vibration analysis, temperature measurement and LoRaWAN® communication in a compact IP68 sensor. Its on-board processing limits transmitted information to relevant condition data and alerts, while its configurable thresholds and retained machine learning profile support continuous monitoring of industrial equipment.

The availability of standard and ATEX Zone 1 versions allows users to select the model suited to the installation environment while maintaining the same core vibration-monitoring principle.