■ Product Brief
Our Rotary Bottle Checkweigher is a high-precision inline weight inspection solution specially engineered for pharmaceutical bottle filling production lines. This dual-station checkweighing system solves the weight deviation issue caused by inconsistent empty bottle tare weight, delivering accurate net drug weight measurement for every single bottle.
Working Principle
Checkweigher A captures the tare weight of each empty bottle and sends tare weight data to Checkweigher B in real time. After bottle filling, Checkweigher B acquires the gross weight of filled medicine bottles. The control system automatically subtracts the empty bottle tare weight from gross weight to compute the pharmaceutical net weight. Once the measured net weight exceeds predefined upper or lower tolerance limits, the system instantly triggers the rejection mechanism to automatically remove unqualified bottles from the production line.
This paired rotary weighing architecture eliminates weighing errors from bottle-to-bottle tare variation, ensuring reliable net content verification, rather than only gross weight checking. Rotary turntable bottle handling maintains stable bottle positioning during dynamic weighing, minimizing vibration impact and sustaining high line speed without sacrificing weighing accuracy.
■ Technical Data
| Type | SG-ZAB |
| Weighing scope | 2-300g |
| Restrictions of product | Ф10-100 Н:20-200(mm) |
| Accuracy | ±0.01g (Depends on products) |
| Division scale | 0.01g |
| Belt Speed | 0-50m/min |
| Highest speed | 60pcs/min,120pcs/min,180pcs/min(Optional) |
| Chain plate width | 100mm |
| Powder supply | AC220V 50HZ |
| Power | about 800W |
| Main material | SUS304/316 |
| Weight of machine | about 500Kg |
■ Product Highlights
1.Dual-station synchronized weighing: Station A for empty bottle tare capture; Station B for filled bottle gross weight acquisition
2.Real-time tare data transmission and bottle-to-bottle tare matching
3.Automatic net weight calculation: Gross Weight − Tare Weight = Drug Net Weight
4.Intelligent weight judgment: Overweight / Underweight / OK classification
5.Automatic rejection of non-conforming bottles with configurable reject mechanism
6.HMI touchscreen operation: Recipe storage, weight tolerance setting, batch data display
7.Production data logging, statistical report generation, batch traceability
8.Stainless steel rotary turntable, stable bottle transfer, anti-tipping design
9.Optional compliance package: GMP compliant design, 21 CFR Part 11 audit trail, electronic signature for pharma factory validation
10.Easy integration with existing bottle filling, capping and packaging lines
■ Industry Applications
Ideal for pharmaceutical liquid bottles, oral syrup bottles, vials, eye drop bottles and other bottled medicine filling lines. Also applicable to cosmetic and food bottle filling requiring strict net content inspection.
■ Company Profile
■ Cooperative Clients
■ Exhibition
■ Package & Logistics
Packaging
● All products are packed in standard export-grade packaging to ensure maximum protection during transportation.
● Each unit is wrapped with plastic film and foam, fixed firmly with inner support, and placed in a strong carton or plywood case.
● All corners and fragile parts are specially protected to prevent collision, scratch and damage.
Shipping
● We support sea freight, air freight and international express (DHL, FedEx, UPS, TNT) according to customer requirements.
● Goods will be carefully loaded and inspected before delivery.
● A complete tracking number will be provided once shipped, so you can monitor the whole logistics process.
● We cooperate with reliable forwarders to ensure safe, on-time and cost-effective delivery.
FAQ
Q1: How does this dual station rotary bottle Checkweigher calculate net weight?
A: Checkweigher A weighs empty bottles to get tare weight and sends data to Checkweigher B. After filling, Checkweigher B reads gross weight of filled bottles. The system automatically subtracts tare weight from gross weight to get the net weight of the product inside the bottle.
Q2: Why use two rotary checkweighers instead of one single checkweigher?
A: Empty bottles often have natural tare weight variations. Single-station gross weight check cannot tell whether weight deviation comes from bottle itself or filled content. Dual station tare-gross matching inspects real net content of medicine, improving quality control accuracy.
Q3: Can this rotary bottle checkweigher work with GMP and 21 CFR Part11 requirements?
A: Yes. We provide optional GMP compliant mechanical structure and 21 CFR Part11 data management module, including audit trail, user access control and electronic records for pharmaceutical validated production lines.
Q4: Will the rotary turntable affect weighing accuracy at high speed?
A: The rotary turntable adopts stable bottle clamping and positioning design to reduce vibration during dynamic weighing. The system can maintain high weighing precision while matching the speed of bottle filling lines.
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