Check Weigher


A checkweigher is an automatic or manual machine for checking the weight of packaged commodities. It is normally found at the offgoing end of a production process and is used to ensure that the weight of a pack of the commodity is within specified limits. Any packs that are outside the tolerance are taken out of line automatically.

A checkweigher can weigh in excess of 500 items per minute (depending on carton size and accuracy requirements). Checkweighers can be used with metal detector and X- ray machines to enable other attributes of the pack to be checked and acted upon accordingly.



Pharmaceutical Checkweigher Station

In general, pharmaceuticals produced with low weight and containing materials such as prospectus, spoon, pipette in the contents of the carton should be precisely measured before leaving the line. Moreover, the quantity controls of volatile products such as aerosols after the quarantine period can only be performed with precise measurements. Checkweigher is used in the pharmaceutical industry to ensure total quality and patient safety. Therefore, the precision and operational accuracy of its weight measurement must be perfect. The completeness of the pharmaceutical components that the patient will use is determined by many legislators with regulations. Pharmaceutical manufacturers have to commit that a carton has been produced in full. Checkweigher controls the weight of the smallest component in the carton, ensuring that a carton is complete.

The Pharmaceutical Checkweigher Station PCW-100 complies with international standards and can make very precise measurements. The Pharmaceutical Checkweigher Station PCW-100, which can control pharmaceutical product weights between 5 g and 1000 g at a speed of 300(*) products/minute with an accuracy of 0.1 g, can work integrated with traceble production processes.

A conventional checkweigher consists of input, measurement, and output conveyors. Load cell placed under the measuring conveyor detects the weight changes while the conveyor belt is running and measures the weight of the product passing through it with a certain precision by using special mathematical functions. This weight information is processed in the internal automation system and the system decides whether the product will be accepted or rejected. Products whose weight falls outside the predetermined acceptance range are sent to a locked rejection box with the help of an air piston.