Wireless Vibration Sensors for Rotating Equipment Monitoring
A wireless vibration sensor removes the cable run between the machine and the measurement system. The sensor is mounted on the bearing housing or machine frame, samples triaxial vibration at a fixed interval, and transmits the result over a radio link to a gateway. For plant engineers, the practical benefit is straightforward: condition monitoring can be installed on pumps, fans, motors and gearboxes where cable routing is impractical, where the asset moves, or where installation must be completed during a short shutdown window. LOGGON TECH supplies battery-powered wireless vibration sensors and the gateway that collects their data, covering acceleration, velocity and spectrum measurement. This page lists the models, their published data, and the way the hardware connects into a wireless condition monitoring system.
What it does
Each sensor measures vibration in three axes and, depending on the model, internal temperature. Measurement outputs include acceleration, velocity and spectrum data, which lets the monitoring system trend overall values and inspect frequency content for bearing tones, gear mesh frequencies and imbalance. The frequency range of 10–5000 Hz covers the shaft and bearing defect bands typically relevant to small and medium rotating machines. Devices are battery supplied, with a working time stated as over 2 years for the LOGGON-401, so no field wiring is needed for power or signal.
Because the LOGGON-401 carries the manufacturer-published explosion-protection marking Exia IICT4Ga and IP67 protection, it suits classified areas and wet locations where its documented IP67 rating is the relevant figure. A wireless condition monitoring installation of this type replaces periodic manual route collection with automatic, repeated measurement from the same mounting point, which is what makes trend comparison between readings meaningful.
Models and key data
LOGGON-401 wireless vibration and temperature sensor
| Frequency measurement range | 10–5000 Hz |
|---|---|
| Vibration measurement range | ±16 g peak, triaxial |
| Temperature measurement range | −40 to +125 °C |
| Protection | IP67 |
| Explosion protection | Intrinsic safety Exia IICT4Ga |
| Supply | Battery, working time over 2 years |
LOGGON-401B wireless vibration sensor
| Vibration measurement range | ±16 g peak, triaxial |
|---|---|
| Frequency measurement range | 10 Hz–5000 Hz |
| Data types | Acceleration, velocity, spectrum |
| Operating temperature | −40 to +85 °C |
| Explosion protection | Intrinsic safety Exia IICT4Ga |
| Supply | Battery |
LOGGON-401D wireless vibration sensor
| Vibration measurement range | ±16 g peak, triaxial |
|---|---|
| Frequency measurement range | 10–5000 Hz |
| Data types | Acceleration, velocity, spectrum |
| Supply | Rechargeable battery |
| System role | Standard sensor of the V1 instrument |
LOGGON-410 wireless gateway
| Nodes managed | Up to 64 |
|---|---|
| Operating temperature | −20 to +60 °C |
| Protection | IP67, flameproof enclosure |
| Supply | 100–265 V or 8–24 V |
How it fits together
A wireless vibration monitoring system is built in levels. At the machine level, sensors are mounted on the measurement points and transmit readings. In the LOGGON-400 arrangement, the LOGGON-410 gateway receives data from up to 64 nodes and forwards it to the monitoring layer. Separately, the LOGGON-V1 instrument collects data from its own LOGGON-401D sensors (up to 64 nodes) and offers remote expert diagnosis, which allows frequency spectra recorded in the field to be reviewed by specialists without a site visit. A combined 410-to-V1 topology is not part of the documented arrangements and would be confirmed per project.
Two engineering points govern the layout. First, node count per gateway is finite, so the number of measuring points per gateway should be counted at the design stage, including spares. Second, the gateway supply range (100–265 V or 8–24 V, as published) should match the power available in the cabinet where it is installed, and the gateway's own −20 to +60 °C rating should be checked against the enclosure temperature. Sensor placement follows normal practice: rigid mounting close to the bearing, clean mounting surface, and consistent orientation between sensors so that trend data remains comparable over time.
Applications
- Pumps and fans in water and wastewater plants, where washdown and moisture require IP67 hardware.
- Motors and gearboxes on production lines where cable routing to rotating or moving equipment is impractical.
- Classified process areas, using the Exia IICT4Ga sensor variants.
- Cooling towers, conveyors and other outdoor or semi-outdoor assets with wide ambient temperature variation.
- Condition monitoring sensor deployment on existing plant where installation time is limited to a short shutdown.
FAQ
Can the sensor be installed in a hazardous area?
The LOGGON-401 and LOGGON-401B carry the manufacturer-published explosion-protection marking Exia IICT4Ga (certificates available upon request). Installation must follow the applicable area classification and the certified system parameters; check the temperature class against the ambient conditions at the mounting point.
How many sensors can one gateway serve?
The LOGGON-410 gateway manages up to 64 nodes. Plan the node count per gateway with spare capacity for later additions.
What data do the sensors output?
The LOGGON-401B and LOGGON-401D provide acceleration, velocity and spectrum data. The LOGGON-401 provides vibration and temperature measurement over 10–5000 Hz and ±16 g peak triaxial range.
What is the difference between the 401D and the other models?
The LOGGON-401D is the standard sensor of the V1 instrument and uses a rechargeable battery. Model choice otherwise depends on temperature range, battery type and whether temperature measurement is required.
For model selection, gateway layout or a quotation, send your measuring point list and area classification to the LOGGON TECH contact page. Include the machine type, required frequency range and ambient temperature at each point so the correct wireless vibration sensor variant can be confirmed.