A sealed puck — a printed nylon shell around a stainless sensing boss, potted through — with no cable, connector or charging port to fail. It bonds flush to the transmission, transfer gearbox, differentials and final drives, takes the rock strike and the pressure washer, and keeps working from −40 °C mornings to a 120 °C housing. It captures vibration when the truck is in a comparable operating window, computes the diagnostic features on board, and reports to the hub in the cab by radio. Built to outlast the component it watches.
What you get
- Wideband vibration to 11 kHz, so early bearing and gear faults are in range
- Magnetometer shaft-speed reference for order tracking under changing speed and load
- Features computed on the sensor; kilobytes leave it, not megabytes
- Primary lithium cells, no charging, multi-year design life
- Sealed to IP67, shock and vibration qualified, −40 °C to +85 °C, in a tough radio-transparent shell that needs no external antenna
- No cable, no connector, no charging port: the three things that fail first on field electronics are not there
- Bonded flush to the housing on its own steel boss; nothing drilled, nothing to catch, nothing protrudes
Built to last
- Steel where it matters, one joint
- The vibration path is steel from the casting to the accelerometer: a stainless boss that is part of the sensor, bonded straight to the housing. Around it is a tough printed polymer shell with one O-ring joint, and nothing else on the outside can open, crack or leak.
- Potted solid
- Inside, every component is encased in potting compound. There is no air space, nothing to shake loose, and nothing for water to reach even if it got past the seal. It is a solid block that happens to think.
- No cable, no connector, no charging port
- The three things that fail first on field electronics are simply not there. Power is a sealed cell inside the housing and data leaves by radio through the shell.
- Takes the rock strike and the pressure washer
- Sealed to IP67 and qualified against the shock and random-vibration profiles written for equipment bolted to off-highway vehicles. Wash the truck; leave the sensors on.
- −40 °C to +85 °C, no heater
- Primary lithium cells keep their capacity through a northern winter and never need charging, which is how every rechargeable field device dies in the cold.
- Low, flush, out of harm's way
- 84 mm across and 38 mm tall, bonded flat to the housing with nothing to catch. If the casting it sits on survives the shift, so does the sensor.
Specification
| Vibration | Wideband accelerometer, flat to 11 kHz, ±50 g, single axis pointed into the bearing load path and clamped to a stainless boss so the shell carries none of the measurement. Low-rate motion sensing for orientation and regime context. |
|---|---|
| Shaft-speed reference | Three-axis magnetometer reading flux leakage from the rotating shaft. Gives the order-tracking reference without touching the shaft, and is cross-checked against the vehicle bus through the hub. |
| Temperature | Component surface through the mount, plus its own temperature logged with every capture, both trended against load. |
| Processing | Nordic nRF52840, Arm Cortex-M4F with FPU. Order tracking, envelope spectrum and diagnostic features computed on the sensor. |
| Radio | Bluetooth LE 5, long-range coded PHY, to the Scout VISR in the cab. Features every capture; raw waveform bursts on request. No cellular and no GPS on the sensor. |
| Capture | Regime-triggered bursts. The sensor sleeps until the hub signals a comparable operating window, then records a few seconds at full rate. |
| Power | Two primary lithium (LiSOCl₂) cells with a pulse buffer, no charging. Multi-year design life at the standard capture schedule — a calculated figure the bench programme exists to confirm, against a requirement of six months. |
| Housing | Printed PA12 nylon shell in two parts with a radial O-ring, over a stainless sensing boss; every component potted. The shell is impact-tough, transparent to the radio and to the magnetic shaft reference, and not a corrosion cell against the steel it bonds to. No cable, connector or charging port anywhere on the outside. Sealed to IP67 and built for pressure washing. |
| Environment | −40 °C to +85 °C operating, mounting surface up to 120 °C, no battery heater needed. Qualified against the random-vibration and shock profiles written for equipment mounted on off-highway vehicles. Rock strike, mud, salt and hydraulic oil are the normal case, not the exception. |
| Mounting | Epoxy-bonded directly on the sensor's own stainless boss face, flush with the shell floor. Nothing drilled, tapped or bolted into the component housing, and nothing protrudes. Far stiffer than a magnet and less stiff than a stud — the honest trade for never touching a customer's casting. |
| Size | Ø 84 mm × 38 mm. Wider than it is tall. |