GB/T 26647.1-2011 Abolished National standards

GB/T 26647.1-2011 Determination of particle size distribution—Single-particle light interaction methods—Part 1:Light interaction considerations

Publish Date: 2011-06-16 Implement Date: 2012-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 26647.1-2011

Standard Type: National standards

Standard Status: Abolished

is_force_gb: no

CCS Name: Screening, sieve plates, and sieve nets

ICS Name: Granularity analysis and sieving

Publish Date: 2011-06-16

Implement Date: 2012-03-01

Pages: 16 pages

Scope

This part of GB/T 26647 provides guidance on the selection and operation of particle size measurement devices, which measure the particle size and number by detecting the interaction between light and individual particles in the gas or liquid phase. The measured particle size is the optical equivalent size, which is equivalent to the size of a standard particle that produces the same response in the measurement system. This definition requires the use of standard particles with known particle sizes to calibrate the particle size instrument.
This part is applicable to particles with diameters ranging from about 0.05 micrometers to several millimeters. Airborne particles in the range of about 0.05μm to 20μm are mainly measured by light scattering. Larger particles can be measured by light attenuation sensors. For liquid-borne particles, particles in the range of 0.05 micrometers to several micrometers can be measured by light scattering. Particles in the range of 1 micrometer to millimeters are measured by light attenuation. The measurement range of any particle size instrument is typically close to 100:1. When particles larger than about 100 times the minimum particle size are measured with good resolution, the results are greater than or equal to the threshold size of the instrument's maximum size channel.
This part considers the change in the collected light flux response caused by the presence of a single particle in the light-sensitive area of the particle size instrument. For this reason, instruments that rely on data generated by the interaction between light and particles to indicate only the degree of particle movement are not discussed in this part.