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About UsShanghai Yazen specializes in electronic platform scales, hanging scales, truck scales, floor scales, analytical balances, explosion-proof scales, checkweighers, batching and packaging scales, LA cloud-platform smart scales, and IoT-based dynamic weighing systems. The company is among the earliest in the industry to adopt online sales platforms.
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SolutionShanghai Yazen specializes in electronic platform scales, hanging scales, truck scales, floor scales, analytical balances, explosion-proof scales, checkweighers, batching and packaging scales, LA cloud-platform smart scales, and IoT-based dynamic weighing systems. The company is among the earliest in the industry to adopt online sales platforms.
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NewsShanghai Yazen specializes in electronic platform scales, hanging scales, truck scales, floor scales, analytical balances, explosion-proof scales, checkweighers, batching and packaging scales, LA cloud-platform smart scales, and IoT-based dynamic weighing systems. The company is among the earliest in the industry to adopt online sales platforms.
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Technical servicesShanghai Yazen specializes in electronic platform scales, hanging scales, truck scales, floor scales, analytical balances, explosion-proof scales, checkweighers, batching and packaging scales, LA cloud-platform smart scales, and IoT-based dynamic weighing systems. The company is among the earliest in the industry to adopt online sales platforms.
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Contact UsShanghai Yazen specializes in electronic platform scales, hanging scales, truck scales, floor scales, analytical balances, explosion-proof scales, checkweighers, batching and packaging scales, LA cloud-platform smart scales, and IoT-based dynamic weighing systems. The company is among the earliest in the industry to adopt online sales platforms.
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Small automatic weighing machine (left-right sorting)
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I. Product Overview
This compact automatic checkweigher (left–right sorting scale) is an online dynamic weighing and sorting system designed specifically for small‑package production lines. Developed and manufactured by Shanghai Yazhen Electronic Technology, it seamlessly integrates with packaging lines for bagged products such as screw components, coffee, and tea, enabling fully automated weight inspection, pass/fail sorting, and left–right diversion of defective items. It ensures 100% weight‑based quality control before products leave the factory, replacing traditional manual sampling inspections and addressing common quality‑control challenges like missing parts, underweight, or overfilling. The device is well suited for small to medium‑sized production lines across multiple industries, including hardware processing and food portioning.
- Body craftsmanship : The entire machine adopts SUS304 Crafted from stainless steel, it features a robust, corrosion‑resistant structure; easy to wash and clean in food‑processing environments; and resists rust in settings with metalworking dust, making it well suited for humid, high‑dust workshop conditions.
- Conveying assembly Food-grade, non-slip belt ensures smooth conveyance; for small items, it prevents deviation and material jams, and can be seamlessly integrated with packaging machines to allow flexible adjustment of the conveyor speed.
- Control Interaction : Front-mounted HD touch-control panel with an intuitive display of weight data and production statistics; supports storage of multiple product parameter sets, allowing one-touch access to settings for different product categories such as screw packs, coffee, tea, and more, ensuring a low learning curve.
- Support structure Equipped with adjustable stainless steel support feet, it can accommodate varying production line heights, ensuring stable placement and vibration damping to minimize the impact of workshop floor vibrations on weighing accuracy.
- Sorting mechanism : A flip‑plate, left–right sorting and rejection mechanism with gentle pushing force that prevents scratches on packaging bags and avoids scattering small metal components. It allows independent adjustment of the left and right channels to reject over‑weight and under‑weight products, facilitating subsequent sorting and rework.
IV. Key Product Highlights
- High-precision adaptation for small-part inspection : For lightweight small items such as screw packets, coffee bags with hanging tabs, and tea sachets, the optimized algorithm can accurately detect subtle weight deviations—such as the absence of a single screw or a shortage of just a few grams—while maintaining stable detection accuracy.
- Compact body for easy integration into production lines. : Compact footprint design allows for quick integration and installation with both new and existing vertical packaging and portioning machines, eliminating the need for large-scale modifications to existing production lines and accommodating the space constraints of small and medium-sized factories.
- Fully automated cost reduction and efficiency enhancement : Enables high-speed continuous detection, replacing 2-3 The human‑assisted re‑inspection station mitigates the risks of fatigue‑induced missed detections and subjective errors, ensuring a stable testing cadence over extended operation periods.
- Enhanced data traceability capabilities : Automatically records total output, number of good products, and overweight items. / Data on underweight non-conforming products can be exported to the production ledger, thereby meeting the prepackaged net content regulatory requirements of the food industry and the factory’s quality audit standards.
- Multi-layered security protection It features material‑blocking shutdown, self‑diagnostic fault codes, and audible/visual alerts for defective conditions, minimizing equipment downtime and failures. Daily maintenance is straightforward—simply clean the conveyor belt and weighing platform.
- Customized Service Support : The weighing range, belt specifications, sorting direction, and frame height can all be customized to suit customers’ specific packaging dimensions and production line layouts.
V. Segmented Application Scenarios
1. Hardware Fasteners Industry
Used for sorting and inspecting small packages of hardware components such as screws, nuts, and washers, it identifies missing parts and excess components, ensuring consistent quantity and specifications in each package and preventing customer complaints caused by incomplete shipments. It is suitable for packaging lines handling electronic components and furniture hardware.
2. Food and Beverage Industry
It covers prepackaged products such as bagged loose-leaf tea, pour‑over coffee bags, and instant coffee powder, with strict control over net content. This approach not only prevents cost inefficiencies caused by overfilling but also ensures compliance with market regulatory requirements for the net content of prepackaged foods, making it widely used in tea processing plants and coffee packaging facilities.
3. Expanding General-Purpose Scenarios
It can also be used for online weight‑based sorting and inspection of various lightweight small‑packaged products, including spice sachets, health‑care powders, small household‑chemical bagged items, and traditional Chinese medicine decoction pieces.
- Body craftsmanship : The entire machine adopts SUS304 Crafted from stainless steel, it features a robust, corrosion‑resistant structure; easy to wash and clean in food‑processing environments; and resists rust in settings with metalworking dust, making it well suited for humid, high‑dust workshop conditions.
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Product Name
Product model
Single weighing range
Weighing accuracy range
Minimum scale division
Maximum speed
Exclusion method
Preset Product Number
Body material
Small high-precision weighing scale
YJ-JTC150
200g
+0.1g~+0.5g
0.1g
4000 item / hour
Left and right exclusion
100
Premium mirror-finish steel
Power supply
Rated power
Sensor
Control system
Work environment
Protection Level
Weighing material dimensions
Conveyor belt dimensions for Taiwan
Product dimensions
220VAC, 50Hz
0.12KW
ZEMIC L6D16
High speed A/D Sampling Controller
Temperature :0 ° C~40 ° C Humidity :30%~95%
IP54
≤ 200mm (L)*150mm (W)
250mm (L)*168mm (W)
523.5mm(L)*243mm(W)*345.1mm(H)
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No. 2050, Dingsheng Road, Xiaokunshan Town, Songjiang District, Shanghai City, Building 5, Paimile Sheshan Zhidi
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