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Air suspension pressure — read from a phone, without breaking into the circuit
Air suspension and airbag circuits are checked by eye and by ear far more often than by gauge. A battery sensor on the circuit and a phone as the display changes that, without adding a receiver or cutting into the loom.
TPMS for air suspension: 0-500 kPa gauge, phone readout
Air suspension TPMS: 0-500 kPa gauge (0-600 kPa absolute), ±2 kPa, IP67, BLE phone readout.
Air suspension and air spring circuits normally sit inside 0-500 kPa gauge (0-600 kPa absolute), which is inside the standard sensor range; anything above that is a different sensor, not a different brand. Accuracy is ±2 kPa, sealing IP67, and the reading goes to a phone over 2.4 GHz BLE 4.1 - so a leak that would only show as a sag can be seen as a pressure number.
Where it fits, and where it does not
Our standard sensor covers 0–500 kPa gauge (0–600 kPa absolute), about 5 bar. That is the right range for many light air circuits and for low-pressure bellows. It is not the range for a heavy-truck air suspension running at 8–12 bar, and we say that in the first reply rather than shipping a part that reads saturated.
So the honest split is:
- Light air circuits, low-pressure bellows, seat and cab air — inside the standard range.
- Heavy vehicle air suspension at 8–12 bar — above the standard part: a different sensor has to be specified, and we will say so.
What the sensor gives you
- 2.4 GHz Bluetooth — the phone is the reader; nothing to mount, wire or power.
- 0–500 kPa gauge, ±2 kPa — finer than the drift you are looking for.
- Replaceable CR1632, about 1.5 years — changed in the workshop, no re-pairing.
- IP67, Ø21 × 16 mm, valve-mounted — a normal service task again.
What it does not do
There is no continuous monitoring and no in-cab alarm without a receiver: nothing is watching while nobody checks. If the circuit must alarm in the controller, the receiver configuration (UART or CAN) is the right answer, and we build it to order.
What we need to answer properly
- Working pressure of the circuit — this decides whether the standard part applies.
- Where the measuring point sits: a tee, a port, or the valve of the bellows.
- Whether the reading has to be continuous or a periodic check is enough.
Specifications (BLE sensor, standard range)
| Parameter | Value |
|---|---|
| Pressure range (standard) | 0–500 kPa gauge (0–600 kPa absolute) |
| Accuracy | ±2 kPa |
| Ingress protection | IP67 |
| Operating temperature | −20 to +80 °C |
| Battery | CR1632, replaceable, about 1.5 years; pairing survives a battery change |
| Radio | 2.4 GHz BLE 5.1, no receiver, no wiring, reading on a phone |
| Heavy-truck air suspension | 8–12 bar is above this range — different sensor, stated before quoting |
| Not measured | Load, ride height, or valve state — pressure only |
Want samples or a specification for your programme?
Tell us the vehicle, wheel count, where the data should go, and the label language for your market. We answer in writing.
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