Home > Products > Electronics & Electricity > Electronic Instrument > Laboratory Instrument

SED-2000C automatic opening and closing porosity tester

Product Introduction;

This instrument adopts an integrated containerized metal pipeline and is a fully automatic testing instrument that uses gas displacement method to detect the true density of liquids (non-volatile, non corrosive) and solid substances. The instrument is mainly used in industries such as food safety, new energy, new materials, environmental protection, and mining, and can test substances such as food, beverages, petroleum, coal, floating beads, alumina, refractory materials, battery materials, etc.

working principle;

Using Archimedes' principle - gas expansion displacement method, small molecule inert gas (He or N2) is used as the medium, and the ideal gas state equation: PV=nRT is used to calculate the volume of gas displaced by the sample in the test chamber, so as to accurately measure the skeleton volume (including closed pores) of the sample. Then, the true density value is calculated based on the density equation: ρ=M/V

The gas expansion displacement method replaces liquid with gas to determine the volume displaced by the sample This method can avoid testing errors caused by sample dissolution in the immersion method and has the advantage of not damaging the sample. Because gas can penetrate the extremely small pores and irregular pores on the surface of the sample, the measured sample volume is closer to the true volume of the sample, which can be used to calculate the density of the sample. The test value is also closer to the true density of the sample

Performance parameters;                     

Main functional true density (various non-volatile, non corrosive solids and liquids, including closed pores);

Real volume (various non-volatile, non corrosive solids and liquids, including closed pores);

Visual density (using liquid paraffin to test the visual density of various samples);

Visual volume (using liquid paraffin to test the visual volume of various samples);

Porosity (the porosity of a material can be calculated by its true density and apparent density)

Open closed porosity (for block materials such as foam materials, rock cores, metal components, etc.), in accordance with GB/T 10799-2008, ASTM D6226-2005, ISO4590-2002; (A computer must be configured)

Test accuracy accuracy error ≤ ± 0.02%, repeatability error ≤ 0.02%, division value: 0.0001g/cm3; (Based on the test results of the standard sample)

The pressure range is 0KPa-100KPa. Users can set pressure values as needed to reduce measurement errors caused by sample deformation due to excessive pressure;

High precision silicon thin film capacitive pressure sensor with pressure accuracy, with an accuracy of 0.1% of the actual reading, better than 0.1% of the full range;

Complete the entire testing process in 2-5 minutes at a testing speed;

Test range The true density density of the sample to be tested is unlimited. It can test all kinds of nonvolatile and noncorrosive liquids and all kinds of powdery, granular, blocky and foam solids;

The sample tube comes standard with a 10cm3 stainless steel true density sample tube; Special sample tubes with a capacity of 5cm3-1000cm3 can also be customized as needed;

Test gas: 40% pure helium gas with a purity of ≥ 99.999%; Other gases such as nitrogen are optional;

Users can choose instruments with dual gas function according to their needs, with high-purity helium as the test gas and high-purity nitrogen as the driving gas, resulting in lower long-term usage costs;

Original imported valves and silicon thin film pressure sensors for core accessories;

Dual control system for data processing, which can be connected to a computer for use or used independently. Users can switch freely according to their needs;

Instrument size length: 350mm; Width: 350mm, height: 460mm; Net weight: 22kg;