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Tea Bag Weighing

Precision Weighing of Lightweight Products in High-Speed Hopper Systems

This equipment is designed specifically for weighing tea bags and is primarily sold to malls, hotels, and supermarket retailers. Tea bags are typically lightweight, weighing around 5g or 10g.

Challenge

  1. Large Hopper Weight: The tea hopper, which holds the tea prior to bagging, typically weighs about 200g, while each individual tea bag weighs only 5g or 10g.
  2. Dynamic Weight Inspection: Since this is a dynamic weighing process, weight signals must transmit quickly to the PLC or controller to allow the next action to occur without delay.
  3. Eccentric Hopper Design: Due to the offset (eccentric) design of the tea hopper, the load cell must handle the torque created by the hopper’s uneven weight distribution.

Solution

  1. Our 108AA small-capacity load cells, combined with the A2P-D2 amplifier, offer the perfect solution for this application.
  2. The 108AA load cell series is specially engineered for applications with high tare weights and small measurement ranges, achieving accuracy levels above 0.023%. The elastomer materials undergo special polishing and inspection, and aerospace-grade vacuum cables are used to enable the sensor to operate in a vacuum environment.
  3. Constructed with high-strength aluminum, the 108 series sensors provide resilience and overload resistance.
  4. Finite element analysis optimizes torsion resistance and improves the sensor’s dynamic response time.
  5. The A2P-D2 amplifier delivers quick and reliable analog signal amplification, eliminating delays common with digital signal processing and allowing immediate integration with the controller.

Conclusion

Integrating the 108AA load cells and A2P-D2 amplifier allows the equipment to measure with precision down to 0.1g. This high accuracy and fast response time enable a more efficient packaging process, significantly boosting production efficiency.

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Featured Products

108AA
Single Point Load Cell
See standard version.

Reliable and precise, the 108AA single point load cell delivers accurate weight measurements in a compact design. Built for easy integration with bench scales, platform scales, and industrial weighing systems, it offers strong performance across a range of capacities. Its durable construction and dependable output make it a solid choice for consistent weighing results in commercial and industrial environments.

A2P & A2P-D2
Load Cell Amplifiers
See standard version.

ANYLOAD A2P series strain gage amplifiers provide load cell and transducer signal conditioning.  The A2P series strain gage amplifiers are DC powered amplifiers that can drive up to 2 x 350Ω load cells connected directly. They can also drive up to 4×350Ω or 8×700Ω or 8×350Ω load cells through a junction box. Equipped with individual adjustable resistors, the A2P’s are housed in a PVC enclosure and can be installed on a standard rail channel.  Fully compliant with the Conformité Européenne (CE) – Electromagnetic Compatibility Directive, the A2P amplifiers have wide input signal from 0±36mV and output signal of 0±10V or 4-20mA. The A2P-D2 amplifier is now equipped with two options of excitation voltages (5VDC or 12VDC) to comply the desired requirements in various applications.

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