KIMAX 2      spring 3/4 axle

Kimax 2 onboard truck scale

Radio Set includes:

Kimax 2 radio 1SG + 2SG

Part number 033400-01E1

1 x display unit cabin

1 x mounting frame + connection cable

Additional you must purchase SG sensor and gluing kit


Kimax 2 radio 1SG + 1SG + 2SG

Part number 033340-01F0

1 x display unit cabin

1 x mounting frame + connection cable

Additional you must purchase SG sensor and gluing kit

  • Current Gross weight for the entire vehicle *
  • Gross weight per tractor/trailer *
  • Current load on all individual axles
  • Payload for the entire vehicle *
  • Payload per tractor/trailer *
  • Alarm for overload on individual axles
  • Alarm for Gross weight
  • All weights are displayed in tonnes


Kimax 2 radio fits your DIN slots

And offer you an axle load indicator for your vehicle, either as a solo instrument including interface for SG Sensors, or as a display, which needs contact to one Kimax 2 Sensor through the power line device bus, which can act on the existing electrical system on your vehicle.

  • Kimax 2 calculates the current loads from the actual strain in the front axle(s) and the strain in the spring suspension system. The onboard scale displays the weight figures as a three-digit value.
  • The Kimax 2 On-Board Load Control is an electronic weighing system which can be used in all vehicles whose axles or axle groups are equipped with parabolic spring suspension system.
  • Due to the modular construction, the product is very flexible and can be individually adapted to most vehicle conditions.


… and warns when limits are exceeded

Kimax 2 has two separately adjustable alarm levels. Exceeding alarm level 1 is indicated by a flashing diode for the individual axle which has exceeded its limit.
Alarm 2 switches in an internal electronic “relay” when the total weight for the vehicle is exceeded. The relay signal can be used as ON/OFF input for another unit, for example a tracking GPS or a tachograph.
Kimax 2 helps to achieve economical transportation, avoids fines and simultaneously optimizes the cargo weight.

* Tractor/trailer readings call for a Kimax 2 radio installed in the truck and a Kimax 2 sensor installed on the trailer.

Axle load measurement

Kimax 2 uses the linearity between strain in the front axle(s) and the load above the axle(s).

For the rear axle group Kimax 2 uses the linearity in strain in the parabolic rear axle springs.

By using two reference points for each axle (empty weight and weight at maximum load) and the currently measured strain, Kimax 2 calculate the current axle load with an accuracy of 2% of the maximum load for each axle.

Basic operation

The strain in the front axle will increase lineary with the load above the axle, in case of two front axles each axle must have its own SG sensor.

Through two SG sensors installed on the parabolic springs one in each side enables measuring the axle load on a rear axle group.

SG sensor on parabolic rear axle suspension

3-axle – axle load meter for mechanical suspension

SG sensor for front axle and 2 air sensors for rear axle offer you the best accuracy. The influence of inclination or slightly uphill/downhill standing is partly compensated in this configuration, as well as load indicating is unaffected of the distribution of goods loaded on the vehicle.

4-axle – load scale for trucks suspended by mechanical springs

SG sensor for the front axle and 2 air sensors for the rear axles are connected to Kimax sensor box on chassis. Sensor box communicate weight data with Kimax display inside the cabin.

Axle configuration and sensors

In case of two independed axles you must connect a SG sensor on each axle to its own input (measuring channel)

In case of a dual group you must connect both sensors from the rear axle group to same input (measuring channel)

Kimax 2 calculates the current axle load on
each axle/axle group based on two reference values LO and HI each axle.

Using a single SG sensor on a mechanical suspended front axle offer you typically same accuracy in axle load as you get on an air suspended front axle.


Optional versions:

Kimax 2 is exactly as flexible as your vehicle:

  • Do you have a tractor equipped with air suspension on both front axles
    and rear axles combined with a lift axle? No problem!
  • Do you have a truck with 2 front axles equipped with steel springs and
    two rear axles divided in left hand and right hand air circuits? No
  • Do you want to couple a trailer or semitrailer on the above vehicles?
    No problem!
  • Do you want to couple a low bed trailer equipped with hydraulic
    suspension on a tractor equipped with air suspension? No problem!
  • Do you want to swap from one trailer to another trailer? No problem!
    – Individual calibration values are stored in the Kimax unit on each

Assosiated units

  • Kimax 2 Radio are able to communicate with both Kimax 2 Universal and
    Kimax 2 Sensor as input devices
  • Kimax 2 output units is RS-232 thermal printer or 433 MHz
    Wireless terminal.

Visit for more details and information.

Technical Specifications


Supply voltage 10 – 30 V direct current
Current consumption max 90 mA 
Alarm 1 Flashing display
Alarm 2 output open collector NPN max 0.2A/ 50 VDC
Display Three-digits 7-segment LED character height 20.3 mm
Accuracy 2% of maximum load at 0 °C – +50 °C
SG sensor 0-20 mA input
On-board computer RS-232 serial
Printer RS-232 serial
Device bu Power line communication
Operating temperature -25°C to +70°C
Storage temperature -40°C to +70°C
Dimensions 182 x 53 x 75 mm
Weight approx. 550 g
Protective class IP60
Approval CE and E1


Kimax 1 and Kimax 2 are a series of high quality well proven on-board scales for use on trucks, buses and loading equipment. For detailed product selection guide please go to Kimax 1 and Kimax 2 are registered trademarks owned by Sense-Tech Weighing Systems.

Sense-Tech Weighing Systems are used all over the world. From the hectic harbours of Amsterdam to the dusty outback of Australia. And everywhere in between.

Sense-Tech Weighing Systems ApS
Bygade 43A
DK-7173 Vonge

Monday – Thursday: 8:00 – 16:00 CET
Friday: 8:00 – 14:00 CET