KUNWEI / KWT1B133 / 싱글 포인트 빔 로드셀
HBM / PW4M 싱글 포인트 로드셀
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KUNWEI / CPA11A / 싱글 포인트 패럴렐 빔 로드셀 3kg~750kg (저울용)

Parallel beam sensors mainly consist of an elastic body, strain gauges, and measurement circuits. The elastic body of parallel beam sensors uses a dual parallel beam structure, typically made from aluminum alloy or stainless steel. When the elastic body deforms under external force, the strain gauges attached to its surface also deform, causing changes in their resistance values. These changes in resistance values are converted into electrical signals through the measurement circuit and then transformed into readable weighing values via an analog-to-digital converter (ADC module). Parallel beam sensors, known for their simple structure, high precision, wide measurement range, and good stability, have become one of the most commonly used types of load sensors in industrial fields, especially suitable for high-precision measurement scenarios.
Our company’s CP series parallel beam load cells are high-performance single-point load cells with a measurement range of 3 kg to 750 kg, available in multiple size specifications. The product has obtained the China Measuring Instruments Type Approval Certificate (CPA) and achieves precision levels of C5/C6, with repeatability error ≤ ±0.01 F.S., meeting customers’ precision requirements across different weighing ranges. The operating temperature of the product is -30°C to +65°C, with an IP67 protection rating. It features automatic corner adjustment, compact design, and temperature compensation, significantly enhancing its accuracy and stability when used in industrial environments. Due to its excellent performance, the CP series load cells are widely used in various industrial and retail weighing applications such as electronic price scales, packaging scales, and process weighing control systems.

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CPA11A Single Point Parallel Beam Load Cells 3kg to 750kg for Weighing Scales

Description

Due to the excellent mechanical properties of aluminum alloy, we chose aluminum alloy as the elastic body when designing the CP series load sensors. The aluminum alloy undergoes colorless anodizing and sealing, which not only enhances surface hardness but also improves corrosion resistance. In terms of manufacturing process, the following steps are adopted:

  • Surface treatment: Thoroughly clean the elastomer, removing grease and oxidation layers.
  • Attaching strain gauges: Select suitable strain gauges based on the sensor’s force conditions (such as uniaxial, multiaxial, compound, etc.), apply uniform pressure to the strain gauges, eliminate air bubbles, and ensure they are fully adhered to the strain region of the elastomer to achieve better precision.
  • Temperature compensation: Attach temperature compensation patches to the elastomer, while affixing the wiring board at a location away from the strain area to minimize the impact of temperature changes on sensor accuracy.
  • Waterproofing: Use high-quality waterproof sealant to encapsulate the strain gauge and wiring board positions.
More Details

Single Point Parallel Beam Load Cells 3kg to 750kg for Weighing Scales
Single Point Parallel Beam Load Cells 3kg to 750kg for Weighing Scales

 

Model of CPA11A

Through the above process, the CP series weighing sensors can achieve the accuracy of C5/C6; Sensitivity reaches 2 ± 0.2mV/V; Repetitive error ≤ ± 0.01% F.S; 30 minute creep ≤ ± 0.014% F.S; Within the working temperature range of -30 ℃ to+65 ℃, the sensitivity temperature coefficient remains stable at ≤± 0.0014% F.S./℃; The ultra-high parameter indicators such as IP67 protection level enable the CP series weighing sensors to maintain high accuracy and stability in harsh working conditions such as high corrosion, high and low temperature in chemical, food processing, high-temperature workshops, and cold chain logistics.

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