Information on the most widely used ASTM standards within the materials testing industry
Model: UT2094B
UT2094B Open and Closed Cells Porosity Tester is an automated testing instrument uses an integrated modular metal pipeline and is a fully automatic testing instrument that detects the true density of liquids (non-volatile, non-corrosive) and solid materials using the gas displacement method. The instrument is mainly applied in industries such as food safety, new energy, new materials, environmental protection, and mining, and can test substances such as food, beverages, petroleum, coal, glass beads, alumina, refractory materials, and battery materials.
General Introduction
UT2094B Open and Closed Cells Porosity Tester is an automated testing instrument uses an integrated modular metal pipeline and is a fully automatic testing instrument that detects the true density of liquids (non-volatile, non-corrosive) and solid materials using the gas displacement method. The instrument is mainly applied in industries such as food safety, new energy, new materials, environmental protection, and mining, and can test substances such as food, beverages, petroleum, coal, glass beads, alumina, refractory materials, and battery materials.

Key Features
Using the Archimedes principle -- gas displacement method, using small molecular inert gases (He or N2) as the medium, the volume of gas displaced by the sample in the testing chamber is calculated using Boyle's law: PV=nRT, so that the skeletal volume of the sample (including closed pores) can be accurately measured. Then, the true density value can be calculated based on the density equation: ρ=M/V. The gas expansion displacement method is used to determine the volume displaced by the sample by replacing liquid with gas. This method avoids testing errors caused by sample dissolution in immersion methods and has the advantage of not damaging the sample. Since gas can penetrate the very small pores and irregular surface pores of the sample, the measured volume of the sample is closer to the true volume of the sample, allowing for a more accurate calculation of the sample's density, with test values that are closer to the true density of the sample.

The dual control system can connect externally to a computer via a serial port, allowing the instrument to be operated through software on the computer; the instrument itself has a built-in microcomputer touchscreen control system, which can also operate the instrument through the touchscreen. Both operation modes are fully automatic, requiring no manual supervision, and they automatically generate and save test results. The dual control system provides users with a more convenient operating method, allowing users to switch between operating modes as needed, and both systems have full voice prompts throughout the process.

The sample tube serves directly as a test chamber, effectively utilizing the volume of the test chamber, which can significantly improve testing accuracy. Sample tubes of different volumes can simultaneously meet the needs for micro-volume and large-volume samples, in order to achieve the goal of improving testing accuracy.

The sample tube is automatically installed with a unique device that only requires the sample tube to be placed in the designated position. The instrument automatically installs the sample tube to the connection port, and after the test is completed, it automatically disassembles the sample tube. This makes operation more convenient while also avoiding testing errors caused by manual installation of the sample tube.

Using original imported pneumatic valves instead of traditional solenoid valves, eliminating the heating problem and thoroughly removing the impact of solenoid valve heating on testing accuracy.

The integrated containerized pipeline has no pipeline joints between the valves, reducing leakage points, with a uniform temperature field and a leakage rate lower than 10-10 Pa*m3/s.
Automatically perform a leak test on the gas circuit system, automatically determine whether there is any leakage in the reference chamber and the sample tube, ensuring the accuracy of the test results.

The control unit of the operation interface allows for the control of various hardware actions of the instrument, helping operators understand the working principles of the instrument and promptly identify fault points when the instrument malfunctions, facilitating subsequent inspection and maintenance.
After the test is completed, the system automatically returns to normal pressure to prevent sample splashing when disassembling the sample tube.

Main Technical Specification
| Main Functions | True density (all kinds of non-volatile, non-corrosive solids, liquids, including closed pores); Real volume (all kinds of non-volatile, non-corrosive solids, liquids, including closed pores); Apparent density (liquid paraffin can be used to test the apparent density of various samples); Apparent volume (liquid paraffin can be used to test the apparent volume of various samples); Porosity (the porosity of the material can be calculated from the true density and apparent density of the material); |
| Test method | Gas expansion Displacement Method |
| Test Accuracy | Accuracy error ≤ ± 0.02%, repeatability error ≤ 0.02%, division value: 0.0001g/cm ³; Subject to standard sample test results) |
| Pressure Range | 0 KPa-100 KPa。 Users can freely set the pressure value to reduce the error caused by deformation of the analysis sample caused by the pressure; |
| Pressure Precision | High-precision imported silicon film capacitive pressure sensor, with an accuracy of 0.1% of the actual reading,
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| Test Speed | Complete the whole test process within 2-3min; |
| Test Range | The true density of the sample to be tested is not limited, and various non-volatile and non-corrosive liquids and various powdery, granular, massive and foamy solids can be tested; |
| Test Volume | More than 0.01ml, suitable for various volume samples; |
| Sample tube, sample tube | Standard 26 * 26 * 51mm sample tube (manufactured according to GB/T10799-2008);It is applicable to the test of 25 * 25 * 50mm rectangular sample made according to the standard, which can effectively utilize the sample pool space and reduce the measurement error caused by too small space utilization rate.Sample tubes of different specifications can be provided according to the user's needs, such as special sample tubes for core with diameter of 25mm. |
| Test gas | Increase the purity of pure helium ≥ 99.999%; Other gases such as nitrogen are optional; |
| Core accessories | Original imported valve and silicon film pressure sensor; |
| Mode of operation | The dual control system can be connected to the computer for use or can be used by a single machine, and the user can switch freely according to the needs; |
| Instrument Size | L: 380mm; W: 380mm; H: 480mm; Net weight: 25kg |
Main Accessories
| Item | Quantity |
| Frame | 1 set |
| Wireless keyboard, mouse, mouse pad | 1 set |
| 20 Cm ³ true density sample tube | 1 set |
| Standard Sample | 1 set |
| Seal ring of sample pipe joint 34 * 2.5 | 2 pcs |
| PU air pipe (4mm * 10mm) | 10m |
| RELIEF VALVE CONNECTION | 1 pc |
| Power line | 1 pc |
| 1A safety tube | 2 pcs |
| Sample tube brush | 2 pcs |
| Hot wire isolation gloves | 1 pair |
| Dust removal gas blowing | 1 pc |
| toolkit | 1 set |
| Pressure reducing valve (including gas meter) | 1 pc |
| Helium pressure reducing valve (including air pressure gauge) | 1 pc |
| Documents (Manual, packing list, certificate) | |
** need prepare locally for the test:
High-purity nitrogen, including steel cylinder, 12MPa, 40L, 99.999% purity (including pressure reducing valve) 1 bottle
Computer 1 set
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