| Model | LR-PJ-1G300 | LR-PJ-1G400 |
| Weighing Range | 200 – 1000 g | 500 – 5000 g |
| Belt Width | 300mm | 400mm |
| Accuracy | ≤±1.0 g | ≤±2.0 g |
| Weighing Platform Dimensions | 450 * 300 mm | 600 * 400 mm |
| Belt Speed | 50 – 70 m/min | 30 – 45 m/min |
| Exclusion method | Control Lever / Push Plate | |
| Power | 400 W | 500 W |
| Resolution | 0.1 g | |
| Control System | Touch Screen PLC | Touch Screen PLC |
| Material | SUS304 Stainless Steel | SUS304 Stainless Steel |
Products
Automatic Checkweigher
PRODUCTS
CONTACT US
Automatic Checkweigher
- Phone : +86 18254352505
- Email : nancy@longreatautomation.com
- Wechat : +86 18254352505
- Whatsapp : +86 18254352505
Product Description
Product Show
Automatic Belt Checkweigher for Accurate Online Weight Inspection

Longreat Belt Type Checkweigher is an automatic inline weighing system designed for continuous weight inspection on food processing and packaging lines.
It accurately checks the weight of each product during high-speed production and automatically identifies overweight, underweight, or missing products, helping manufacturers improve quality control, reduce product giveaway, and optimize production efficiency.
Designed with food-grade stainless steel construction, the system is suitable for meat, poultry, seafood, frozen food, and other food processing applications.
Product Overview
| High Accuracy Inline Weight Inspection Solution
The belt type checkweigher integrates a conveyor system, high-precision weighing sensor, intelligent control system, and automatic reject device. Products pass through the weighing section continuously without stopping. The system measures the actual weight of each product and compares it with the preset target weight. Products outside the acceptable range can be automatically rejected to ensure consistent product quality. |
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Key Features

Applications
Belt Checkweigher Applications in Food Processing Industry
Longreat belt type checkweigher is widely used for online weight inspection in:
Poultry Processing
Weight checking for chicken breast, chicken legs, chicken wings, chicken nuggets, and packaged poultry products.
Seafood Processing
Suitable for fish fillets, shrimp, crab products, and frozen seafood packages.
Meat Processing
Used for sausages, meat portions, beef products, pork products, and prepared meat products.
Frozen Food Industry
Ideal for frozen vegetables, frozen meals, dumplings, fries, and other frozen products.
Food Packaging Lines
Integrated with automatic packing machines, conveyors, and production lines for complete automation.
Customized Solutions
Customized Belt Checkweighing System for Different Production Lines
Every production line has different requirements. Longreat provides customized checkweigher solutions based on:
- Product size and weight
- Production capacity
- Conveyor layout
- Reject method
- Production environment
- Integration requirements
Our engineering team can provide complete solutions from equipment design, manufacturing, installation guidance, and after-sales support.

FAQ
1,What is a belt type checkweigher?
A belt type checkweigher is an automatic weighing machine that checks the weight of each product while it moves on a conveyor belt. It is widely used for quality control in food processing and packaging lines.
2,What products can be checked by a belt checkweigher?
It can check various products including meat, poultry, seafood, frozen food, vegetables, packaged food, and other industrial products.
3,What is the advantage of an automatic checkweigher?
An automatic checkweigher improves production efficiency by checking 100% of products, reducing manual inspection, minimizing product giveaway, and ensuring weight consistency.
4,Can the checkweigher be integrated into an existing production line?
Yes. Longreat provides customized solutions according to your conveyor layout, production speed, product size, and automation requirements.
5,How to choose the right checkweigher model?
The selection depends on:
- Product weight range
- Product dimensions
- Production speed
- Accuracy requirements
- Production environment
Our engineers can recommend the suitable model according to your application.
6,Can it be used in wet food processing environments?
Yes. For food processing applications, the machine can be designed with hygienic stainless steel construction and suitable protection level according to the production environment.
Contact Us
Get a Customized Belt Type Checkweigher Solution
Looking for an automatic checkweighing solution for your food production line?
Please contact Longreat today for professional technical support and customized automation solutions.









