No calibration. Top up the spreader hopper up and off we go! There is nothing simpler.

The weighing system offers controlled convenience and more reliability. It enables on-line determination of the different spreading material properties with two 200 Hz load cells – providing a high level of measuring accuracy. It automatically compares the actually applied rate with the pre-determined rate. Deviations in the flow characteristics, for example when spreading blended mineral fertilisers, are detected and the spreader is re-adjusted automatically via the electric metering shutter slides. In addition, the applied rate is accurately documented for field-related nutrient application. In addition, the application rate can be altered at any time by pressing a button on the ISOBUS terminal.

On the Profis system, any possible effects of gravity on the measuring of the hopper contents are taken into account during work with the help of a tilt sensor: A twin-axis tilt sensor that assesses the front and back tilt as well as to the left and right, corrects measurement errors that may arise when going up and down hills or when driving across a hillside.

The advantages
Regulating/calibrating under all operating conditions: 

• Side, border and water course spreading 
• Part-width section control 
• Using application maps/N-sensors 
• Spreading of blended fertilisers

Accurate weight measurement: 

• display of residual volume 
• Residual area and residual hopper level display 
• Documentation of the total volume spread

For the ZA-TS Profis with tilt sensor, the angle of the spreader is conveniently displayed on the ISOBUS terminal via spirit level symbols for simplifying the horizontal alignment of the ZA-TS.

The ProfisPro intelligent weighing system combines the benefits of the weighing system with the FlowControl torque measuring system

Profis – Intelligent weighing system
The Profis weighing system is integrated in the frame; on the ZA-TS, the hopper and frame are connected to a separate chas-sis by two 200 Hz weigh cells or four weigh cells on the ZG-TS. There are therefore no weight measuring points to be influ-enced by the traction forces of the tractor. The result is precise online weighing every 55 lb (25 kg)! An additional tilt sensor provides further compensation for the machine on slopes. On the ZG-TS, the sensor signal is also used for the steering axle to counter-steer on slopes, thereby preventing the ZG-TS from drifting downhill.

Optimized spread rate from the very start
This combination of the Profis weighing system and FlowControl enables the fertilizer spreader to use torque to regulate its theoretical application rate throughout the spreading process. The Profis weighing system monitors the actual spread rate every 55 lb (25 kg). This allows FlowControl to recalibrate itself at regular intervals.  This takes place with no need to stop. The ProfisPro intelligent weighing system means that the spread rate is optimized from the very start of the spreading process. In addition, the driver can see the amount of fertilizer remaining in the hopper at all times and can display the acreage that remains until it is empty.

The benefits

• Absolute precision from the very first second
• Application rate calibration in  any field situation, regardless of the side
• Ideal precision by simultaneous monitoring of  the weighing system and torque measurement
• Running empty and clogging detection
• Accurate weight measurement, indicating remaining quantity and area
• Documentation of the total amount spread
• Additional features of the ZG-TS: steering axle control on hilly terrain and load-dependent braking force control

The extremely clever Profis weighing system goes into action with its intelligent fill level management right from the loading stage. Without the use of an external scale, the system gives precise information about the load condition at all times, thus preventing overloading and empty travelling. Profis also sets standards as a filling aid as well as through the continuous measurement of the hopper contents.

The benefits

• Intelligent filling aid 
• Reliable fill level measurements even without using an external weighing system 
• Avoidance of unnecessary empty travelling and excessive residues