Online Checkweigher– TGCW-100

Product overview

Maintaining the correct package weight is an important quality-control requirement in filling and packaging operations. Even when a production line is operating normally, individual packs can occasionally vary because of filling behaviour, product characteristics or packaging conditions.

The Online Checkweigher provides continuous automatic weight inspection by checking each compatible product as it moves through the production line.

Technogen Enterprise is an Online Checkweigher Manufacturer and Supplier for Tanzania, serving Food, Dairy, Pharmaceutical, Cosmetic, Personal Care, FMCG and compatible industrial packaging applications.

Unlike periodic manual sampling, where only selected packs are checked, the Online Checkweigher can inspect every compatible product travelling through the machine.

The machine covers a weighing range from approximately 5 g to 100 g and offers specified accuracy of approximately ±0.2 g. Production speeds can reach approximately 120 products per minute, depending on the product and operating conditions. 

Compatible products include sachets, pouches, cartons, bottles, containers and trays that fall within the permitted dimensional and weight range.

The maximum operating capability is supported by a precision weighing platform measuring approximately 275 × 133 mm.

Compatible product dimensions range from approximately 50–180 mm length, 20–80 mm width and 10–150 mm height.

Products travel through the system on a PU conveyor belt. Belt speed can be adjusted between approximately 5 and 90 metres per minute, enabling the checkweigher to be synchronized with different compatible production lines.

As the product crosses the weighing section, its dynamic weight is measured without requiring production to stop.

Automatic zero tracking and intelligent measuring-time compensation support consistent measurement during continuous high-speed operation.

A 10-inch TFT graphical display provides the main operator interface.

Product settings, real-time weight information and production data can be accessed through the control system.

The machine can store approximately 100 product parameters, allowing multiple compatible products to be configured without repeatedly entering every production setting.

It also provides memory for approximately one million weighing results.

Recorded weighing information can be exported through USB for production analysis, batch documentation or internal quality-control review.

For production environments requiring machine-to-machine communication, the system provides RS485 with Modbus RTU.

A fundamental function of the checkweigher is automatic rejection.

After each product is weighed, the measured value is compared with the programmed acceptable weight range.

If the product meets the required limits, it continues through the production line.

If the product is underweight or overweight according to the programmed criteria, an arm-type rejector removes it from the accepted product stream.

A three-colour signal light provides clear operating-status indication. An audible alarm is also available as an optional addition.

The machine frame and weighing platform are manufactured from 304 Stainless Steel, making the system suitable for industrial production environments requiring clean and durable construction.

The equipment is protected to IP54, while the rejection system operates with an air requirement of approximately 0.4–0.6 MPa.

For food processors in Tanzania, the checkweigher can inspect compatible packs after filling and sealing.

Spice and ingredient manufacturers can check sachets, pouches and bottles before they proceed to secondary packaging.

Pharmaceutical producers can use the machine for compatible blister packs, sachets and bottles.

Cosmetic manufacturers can inspect compatible cream tubes, lotion containers and cartons.

The equipment can also be used for suitable FMCG products and industrial components where a weight measurement can determine whether the product meets the programmed requirement.

An Online Checkweigher does not correct an incorrect package. Instead, it creates an automatic inspection barrier between the primary packaging process and the remaining production line.

This enables non-conforming packages to be separated automatically before they reach final packing or dispatch.

For Tanzania businesses moving towards automated production inspection, the machine therefore provides a practical method of verifying individual product weight while maintaining continuous line movement.

Selection should consider actual product weight, physical dimensions, required speed, upstream conveyor rate and rejection method.

The maximum 120-piece-per-minute speed should therefore be matched with the actual product and line conditions instead of being treated as a universal output for every application. 

Working principle

Compatible products enter the Online Checkweigher through the in-feed conveyor.

The conveyor guides each product towards the precision weighing section.

The product passes across the weighing platform while remaining in motion.

The weighing system measures the product weight dynamically.

Automatic zero tracking supports the weighing reference during continuous operation.

The control system compares the measured value against the stored acceptable weight parameters for the selected product.

A product meeting the programmed weight requirement continues through the conveyor.

When a product falls outside the selected weight limits, the reject signal is generated.

The arm-type rejector removes the identified product from the accepted production stream.

The machine records the weighing result.

Production information can be stored internally for subsequent review.

Stored results can be exported through USB.

Where required, RS485 Modbus RTU can be used for compatible communication with external control or data systems.

Salient features

• Dynamic Weight Inspection : Checks individual products during conveyor movement.
• High-Speed Operation : Inspects up to approximately 120 products per minute.
• Automatic Zero Tracking : Maintains weighing reference during continuous production.
• Fine Scale Division : Provides 0.05 g scale division.
• 10-Inch TFT Display : Provides graphical machine operation and monitoring.
• Adjustable Belt Speed : Allows conveyor movement from approximately 5–90 m/min.
• Automatic Rejection : Removes products outside the programmed weight limits.
• Product Memory : Stores parameters for up to 100 products.
• Large Data Storage : Retains up to one million weighing results.
• USB Export : Allows recorded production data to be transferred.
• RS485 Communication : Provides Modbus RTU communication.
• SS 304 Construction : Frame and weighing platform use Stainless Steel 304.
• IP54 Protection : Provides protection suitable for the specified production environment.

Safety & interlocks

• Automatic Reject Control : Diverts products that do not meet programmed weight criteria.
• Three-Colour Signal Light : Provides visual machine-status indication.

Optional / add-on features

• Audible Alarm : Provides additional audible status or alarm indication.

Applications & industries

The Online Checkweigher is designed for production environments where the weight of individual products must be verified automatically during normal line operation.

For the Food industry, it can inspect compatible packaged products after filling or sealing.

The Dairy industry can use it for suitable cheese packets, butter containers, milk sachets and other compatible packs.

Spice and ingredient producers can verify compatible spice pouches, seasoning sachets, bottles and ingredient packages.

In Pharmaceutical manufacturing, compatible blister packs, sachets and bottles can be dynamically checked before secondary packing.

For Cosmetics and Personal Care, the machine can inspect compatible cream tubes, lotion bottles, soap cartons and similar packaged products.

The system can also serve suitable FMCG and industrial components, including compatible plastic components and hardware products.

For Tanzania manufacturers, the key requirement is that the product must remain within the checkweigher's specified weight and dimensional limits.

Application items

• Food Pack Inspection : Dynamic weight verification of compatible packaged food products.
• Dairy Pack Inspection : Checks compatible dairy containers and packs.
• Spice Pack Inspection : Verifies compatible spice pouches, sachets and bottles.
• Pharmaceutical Inspection : Checks compatible blister packs, bottles and sachets.
• Cosmetic Pack Inspection : Verifies compatible tubes, bottles and cartons.
• FMCG Inspection : Provides weight control for compatible consumer-product packs.
• Component Inspection : Checks compatible industrial products where weight is a quality parameter.