IIOT offers considerable potential for the food and packaging industries in particular with digital weighing technology capable of boosting efficiency and productivity. The reason for this is that the more precise the weighing technology, the greater the productivity of filling processes and the less overfilling. The load cell is the crucial component in powerful packaging machines. It is the core of dynamic weighing and packaging processes.
Until now, manufacturers of checkweighers have relied on load cells that work on the principle of electromagnetic force compensation (EFC). They have previously outperformed other load cells based on strain gauge (SG) technology with high precision. At the same time, however, they are expensive, susceptible to problems and very complex to put in operation. Because of this, HBM has continually developed its SG-based load cells such as the FIT7A. This newly developed load cell ensures precision and high speed for processing measurement data as well as easy operation, combined with significant savings in costs compared to EFC load cells.
The FIT7A load cell has been optimized for checkweighing. It has a very high natural resonance, which means its settling time is very fast. The running-in behavior after power-on is also negligible and with the 24-bit analog-to-digital converter and carrier frequency, the load cell provides measured values with low noise and high resolution. Together with the integrated filters and processes for determining dynamic measured values, it contains everything necessary for dynamic weighing without the requirement of an additional PLC and weighing electronics. This makes it possible for a checkweigher with the FIT7A load cell to achieve a standard deviation of only 0.1 g per 10 kg of nominal weight. Depending on the checkweigher design and nominal weight, 100 to 400 measurements per minute can also be implemented.