GB/T 24218.2 Method A: which instrument fits and how to decide

The Digital Thickness Gauge (TNG1089) and Fabric Thickness Tester (TNG1094) are suitable for testing in accordance with GB/T 24218.2 Method A.

Matching Specifications to GB/T 24218.2 Method A

To support testing to GB/T 24218.2 Method A, it is essential to match the instrument specifications with the standard's requirements. The standard specifies the measurement of fabric thickness under defined conditions, including load weight, pressing duration, and pressing foot area. The Digital Thickness Gauge (TNG1089) and Fabric Thickness Tester (TNG1094) both offer a range of thickness from 0.01 to 25 mm, which aligns with the standard's need for measuring thin to medium-thick fabrics. Additionally, the measuring accuracy of 0.01 mm ensures that the results are precise and reliable, which is critical for meeting the standard's requirements.

Load Weight and Pressing Duration

The load weight and pressing duration are crucial parameters in GB/T 24218.2 Method A. Both instruments provide multiple load weight options, including 2cN, 5cN, 10cN, 50cN, 100cN, 400cN, and 1000cN. This flexibility allows users to select the appropriate load for different fabric types, ensuring accurate and consistent measurements. The pressing duration options of 10 seconds and 30 seconds also support the standard's requirement for controlled testing conditions, enabling the measurement of fabric thickness under standardized pressure and time.

Pressing Foot Area and Measuring Accuracy

The pressing foot area is another key specification that must align with GB/T 24218.2 Method A. Both instruments offer pressing foot areas of 100mm², 2000mm², 2500mm², and 10000mm². This range allows for the testing of various fabric samples, from thin to thick, ensuring that the measurement is representative of the material's true thickness. The measuring accuracy of 0.01 mm is essential for achieving the precision required by the standard, as it minimizes measurement errors and ensures that the results are reproducible and reliable.

Lowering Speed of Pressing Foot

The lowering speed of the pressing foot, set at 1.72 mm/s, is a critical specification that supports the standard's requirement for consistent and controlled application of pressure. This speed ensures that the force is applied uniformly and gradually, preventing any abrupt changes that could affect the measurement accuracy. By maintaining a constant lowering speed, the instruments provide reliable and repeatable results, which are essential for compliance with GB/T 24218.2 Method A.

Instrument models referenced

• TNG1089 Digital Thickness Gauge (Fineness / Thickness / Length / Density Testing).
• TNG1094 Fabric Thickness Tester(Gauge) /B (Fineness / Thickness / Length / Density Testing).