TPMS for agricultural machinery

Why tyre pressure matters more here than on a truck

On a road truck the pressure is set once and checked occasionally. On agricultural machinery the correct pressure changes with the job: the machine is driven on a hard road to reach the field, then works in soil where a lower pressure is what keeps the tyre from sinking and the ground from being compacted. Two pressures, one tyre, same day.

Get it wrong in either direction and the cost is concrete: a tyre run too soft on the road damages the sidewall; a tyre run too hard in the field compacts soil, reduces traction and can leave the machine spinning where it should be working.

What this system measures

• Pressure per wheel position, in real time, on the machine — not a weekly gauge check.
• Tyre temperature, which on a working machine tells you more about a slow leak than a single pressure reading does.
• Up to 256 wheel positions on one receiver: a tractor and its trailer, a sprayer with several axles, a fleet of implements, all within one receiver's capacity.

How it is fitted

External sensors screw onto the valve; internal sensors go inside the tyre where they are protected. The receiver is mounted on the machine and outputs through one interface — CAN, RS232, RS485 or Modbus RTU, chosen at the factory — to the machine controller, or to a cab display where the operator should read the values directly.

When the farm has no mobile coverage

This is the difference between agricultural work and port work, and it changes the design. The receiver does not need the internet: pressure, temperature and alarms all work with the data staying on the machine. Where a site wants machines linked to an office, that is a radio-link question rather than a tyre question — and it is a project with its own payload and server, not a catalogue item.

Where coverage does exist, a telematics unit can forward the data. Where it does not, the machine still knows its own tyres, which is the part that prevents the expensive failure.

Who we usually work with

Agricultural machinery dealers, farms and cooperatives buy this as a retrofit for machines already in service; machine builders fit it at the factory. Both paths are supported — the difference is who does the mounting and who reads the data.

What the system is

Parameter	Value
Radio band	433.92 MHz, licence-free
Wheel positions per receiver	up to 256
Sensor form	external screw-on (8V1 / 12V1) or internal, IP68
Interface	one of CAN · RS232 · RS485 · Modbus RTU, chosen at the factory
Data period	10 ms (receiver-to-bus refresh)
Supply	10–30 V DC
Pressure accuracy	±7 kPa
Temperature accuracy	1 °C (error ≤ ±3 °C)
Display	cab display available where the operator should see the values

Questions we are asked

Does it work without any network at all?

Yes. The receiver, the sensors and the cab display work as a standalone system. Network is only needed if you want to see the data somewhere other than the machine.

Can one receiver cover a tractor and its trailer?

Up to 256 wheel positions — the capacity is not the constraint. Send the wheel count of the combination and we will confirm the configuration.

Have you done farm projects before?

Our reference volume is in heavy plant, lifting and port machinery. We would rather say that than claim a farm fleet we cannot show. What we can tell you is exactly how the system is specified for agricultural duty, and who does what during the fitting.

Tell us the machine and the wheel count

Send the machine type, the number of wheel positions, and whether the site has mobile coverage. With those three we can reply with a configuration and say whether the cab display or the machine controller is the better place for the data. Tractors · Harvesters · Receiver and sensor range · All configurations