Description
Highlights at a glance
- Wide applicable materials: It tests melt flow performance of PE, PP, ABS, nylon and other thermoplastics for factories and research institutes.
- Full standard compliance: Strictly follows GB/T 3682 and ISO 1133 international standards for standardized melt flow rate measurement.
- Ultra-precise core extrusion components: Standard die and barrel with tiny dimensional tolerances guarantee accurate test data.
- Eight adjustable standard load grades: Complete matched weights with error within 0.5% to meet diverse polymer test requirements.
- Broad & high-precision temperature control: 30℃–450℃ heating range with temperature accuracy up to ±0.2℃.
- Stable working performance: Adapts to common lab temperature and humidity conditions, resistant to corrosion, airflow, vibration and magnetic interference.
Product Description
The BNR-400B Melt Flow Rate Tester is an instrument designed to determine the flow properties of thermoplastic polymers at high temperatures in accordance with the test methods specified in GB/T 3682 and ISO 1133. It is used for measuring the melt flow rate of polymers such as polyethylene, polypropylene, polyoxymethylene, ABS resin, polycarbonate, nylon, and fluoroplastics at high temperatures. This tester is suitable for production and research work in factories, enterprises, and scientific research institutions
Main Technical Parameters
Extrusion Discharge Part
Discharge orifice diameter: Φ2.095±0.005 mm
Discharge orifice length: 8.000±0.025 mm
Charging barrel diameter: Φ9.550±0.025 mm
Charging barrel length: 152±0.1 mm
Piston rod head diameter: 9.475±0.015 mm
Piston rod head length: 6.350±0.100 mm
Test Weights (Relative error ≤ 0.5%)
Weight No. | Weight | Weight No. | Weight |
No. 1 (Assembly) | 0.325 kg | No. 5 | 4.675 kg |
No. 2 | 0.875 kg | No. 6 | 5.000 kg |
No. 3 | 1.835 kg | No. 7 | 2.500 kg |
No. 4 | 3.475 kg | No. 8 | 2.915 kg |
Standard test load (eight levels)
Level 1: 0.325 kg = (Piston rod + Weight tray + Heat insulation sleeve + No. 1 weight body)
Level 2: 1.200 kg = (0.325 kg + No. 2 weight of 0.875 kg)
Level 3: 2.160 kg = (0.325 kg + No. 3 weight of 1.835 kg)
Level 4: 3.800 kg = (0.325 kg + No. 4 weight of 3.475 kg)
Level 5: 5.000 kg = (0.325 kg + No. 5 weight of 4.675 kg)
Level 6: 10.000 kg = (0.325 kg + No. 5 weight of 4.675 kg + No. 6 weight of 5.000 kg)
Level 7: 12.500 kg = (0.325 kg + No. 5 weight of 4.675 kg + No. 6 weight of 5.000 kg + No. 7 weight of 2.500 kg)
Level 8: 21.600 kg = (0.325 kg + No. 2 weight of 0.875 kg + No. 3 weight of 1.835 kg + No. 4 weight of 3.475 kg + No. 5 weight of 4.675 kg + No. 6 weight of 5.000 kg + No. 7 weight of 2.500 kg + No. 8 weight of 2.915 kg)
4) Constant Temperature Range: 30℃ – 450℃
5) Constant Temperature Accuracy: ±0.2℃
6) Power Supply Voltage: 220V±10% 50Hz
7) Working Environment
Ambient temperature: 5℃ – 50℃
Ambient relative humidity: 30% – 80%
No corrosive media, no strong air convection in the surrounding area
No vibration or strong magnetic field interference in the surrounding area
8) Instrument Overall Dimensions: 250×360×514 (Length×Width×Height, unit:
Shenyang Baoruitong Automation Equipment Co., Ltd. was founded in 2012 and is located in Shenyang, Northeast China's traditional equipment manufacturing base. With a registered capital of RMB 5 million, the company specializes in the R&D, manufacturing, sales, and service of testing equipment. Our products are widely used in construction engineering, fire protection, HVAC, energy-saving,environmental protection, and water-saving fields. We have developed over ten product series with more than one hundred models, including building testing, HVAC testing, fire testing,coating testing, curtain wall and glass testing, and PVC pipe testing. With reliable and stable performance, our products remain highly competitive and are trusted by customers across various industries.
Are You a Manufacturer or a Trading Company?
Shenyang Baoruitong is a professional manufacturer of testing equipment, not a trading company. With more than ten years of experience in developing automated testing systems, we provide complete solutions covering product design, hardware development, software integration, manufacturing, installation, and after-sales service.
Our proprietary technologies achieve measurement precision of up to ±0.001 mm, while our modular engineering approach allows rapid customization to meet specific customer requirements. Certified under ISO 9001 and CE standards, our products are exported to more than 30 countries worldwide.
What Is Your Production Capacity?
Our company operates a standardized manufacturing facility covering 3,000 square meters, with an annual production capacity exceeding 500 units of testing equipment.
Supported by a dedicated R&D team of more than 20 engineers and specialists, we have successfully completed large-scale projects for the solar energy, building energy efficiency, and fire safety industries, ensuring reliable product quality and on-time delivery.
What Certifications Do Your Products Have and How Is Quality Ensured?
All product lines are manufactured under the ISO 9001 Quality Management System. Core testing equipment is CE certified and supported by independent third-party testing reports where applicable.
Our quality assurance process includes:
- 100% incoming raw material inspection
- Three-stage quality control during production
- Comprehensive performance testing before shipment
- 24-hour continuous operation testing to ensure stable performance
Is the Equipment Difficult to Operate? Is Training Required?
No. The equipment features an intuitive bilingual Chinese-English touch-screen interface with one-click testing procedures, making operation simple and user-friendly.
We provide free online and on-site training. Most users can operate the equipment independently within one to two days. Detailed user manuals, video tutorials, and remote technical assistance are also available whenever support is needed.
Are Operating Costs High? Is Maintenance Complicated?
Operating costs are low thanks to energy-efficient hardware that typically consumes around 30% less power than comparable industry equipment.
Daily maintenance is straightforward. The modular design allows quick replacement of components and consumables, while routine maintenance generally involves only basic cleaning and periodic consumable replacement.
We provide comprehensive maintenance documentation and lifetime technical support to ensure long-term equipment reliability and performance.
