What is Check Weigher(CW)

CheckWeigher is a system that ensures the weighing of a product as it passes through the production line. It classifies the product based on the previous weight zone and either rejects or queues it according to its classification. CheckWeigher weighs 100% of the products on a production line. Typically, the CheckWeigher's physical system consists of the Entry section, Weighing section, Exit section, Rejection or Line Separator, and a Computerized control system. The usage and components of CheckWeigher can vary significantly depending on how they are used, the type of product being weighed, and the environmental conditions during weighing. In simple terms, CheckWeigher weighs, classifies, and performs separation based on its classification.

Typical uses of CheckWeigher include:
1. **Filling Control:** Checks if the weights of filled packages are too low or too high.
2. **Net Content Verification:** Ensures that pre-packaged products have a net content compliant with legal standards.
3. **Product Inspection:** Checks components that might be missing in a package, including labels, user manuals, lids, and coupons.
4. **Quantity Control:** Checks the number of missing cartons, bottles, bags, or boxes through weight inspection.
5. **Solid-Liquid Ratio Check:** Ensures that the solid-liquid ratio in package mixtures is within allowed standards against weight limits.
6. **Loss Reduction:** Uses CheckWeigher data to reduce product losses and understand filling settings.
7. **Product Classification:** Classifies products based on their weights.
8. **Compliance Guarantee:** Ensures the suitability of the product with customers, regulatory bodies, or authorized institutions.
9. **Process Performance Control:** Performs weighing processes before and after the production process to control process performance.
10. **Production Line Efficiency:** Measures and reports the efficiency of the production line.

Statistical uses of CheckWeigher include:
- Analyzing production based on weight zones or classifications.
- Using 5 or more zones to obtain detailed filling weight information.
- Displaying efficiency information of the entire production by using total quantity and total weight data.
- Evaluating the efficiency of the entire production speed based on the number of products per minute.
- Warning the operator or filling machine in case of deviation beyond allowed tolerances by displaying standard deviation.
- Recording production outputs as a system record for management and regulatory bodies.
- Analyzing the performance of filling heads for single and multiple head systems.
- Obtaining production total values for a day, a shift, an hour, a filling, or the entire production duration.
- Displaying the performance of the filling machine based on statistics.
- Creating Statistical Process Control charts for process adjustment and manual feedback.
- Providing Statistical Process Control for automatic process adjustment, feedback, and closed-loop control.
- Connecting to top-level control and information systems for packaging line information.
- Incorporating CheckWeigher into the production process, including controlling CheckWeigher with a remote PLC station, creating an interface with computers and PLC, and recording quality control work.

The most significant contribution of CheckWeigher is its ability to perform 100% sampling.
In addition to the mentioned purposes, CheckWeigher is also used for additional inspection purposes. It rapidly serves as a quality assurance system and can be integrated with other automatic inspection devices to check for open sections on a carton or box, missing lids, barcode labels, and metal contaminants.