Catchweighers and Dimensioning Weighing Scanning Systems for Postal, CEP-Services and Intralogistics
AVC: Better by a Calibration Value
Active Vibration Compensation
AVC (Active Vibration Compensation), developed by WIPOTEC-OCS for Weigh Cells, allows the most precise measured results, without compromising on speed, throughput and accuracy, even in non-vibration-free environments.
It is precisely in the mail and logistics sector that these difficult environments are often found.Here, systems are frequently installed on platforms that are susceptible to vibrations during operation and the result may be disruptions when weighing. Building vibrations have a similar effect.
AVC filters environment-induced disruptions out of the measuring results without any loss of speed and enables the weighing technology to be used even in sorting systems or freight centres where scales have to be set up on vibrating floors.
AVC Working Principle
The actual measuring weigh cell measures the signal coming from the weighing belt, including all disturbing vibrations (1). A second weigh cell within the same housing measures only the disturbing vibrations affecting the measurement (2).
The superimposition of both signals (3) results in a useful signal which is freed from the disturbing influences of the vibrations (4).
Active Vibration Compensation is particularly effective in case of typical building vibrations or those of steel structures > 15 Hz. The expected compensation can be up to 20 dB.
AVC - exclusive to WIPOTEC-OCS - is installed as standard in all weigh cells used in postal and CEP services.
Chaotic product sequences
In the CEP sector chaotic product sequences with large and varying parcel lengths which can pose problems for standard catchweighers are another issue. The consequences are larger product gaps and a reduction in throughput.
The intelligent solution provided by the HC-FL catchweigher from WIPOTEC-OCS deals neatly with this problem. This dual scale is a combination of two single-interval scales in line. Both scales can operate independently of each other or in combination at the same time. This means that as soon as a parcel exceeds a certain length, both single-interval scales work together as a virtual third set of scales. Chaotic product sequences with different geometries, sizes and weights no longer play a role.
The machine is ideal for applications where high belt speeds and top throughputs are required for products individually weighing up to 60 kg – which particularly applies to CEP environments. If a consignment is larger than each of the individual scales, the two scales interconnect automatically. The construction principle delivers 60 % higher throughput at the same speed compared to single-interval scales.
By combining two scales with different weighing belt lengths one behind the other in one machine, the double scale is able to weigh products at maximum speed while at the same time achieving the shortest possible product gap.