Penguji Diameter Saluran Keramik DZK
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- Pertanyaan
Keterangan
Penguji Diameter Saluran Keramik DZK
Perkenalan
This instrument is suitable for determining the maximum value of porous ceramic capillary pipe according to GB/T1967-1996 “Porous ceramic hole diameter test method”. This instrument is mainly composed of three parts: gas supply bottle, electrical control box and sample fixture. It adopts precision low-range digital pressure measuring system to accurately measure test pressure value. The test gas is compressed air or nitrogen; The sample fixture is suitable for the sample with a cylindrical cross-section, and the fixture ensures the Xiangtan XiangKE DZK porous ceramic channel diameter tester
This instrument is suitable for determining the maximum value of porous ceramic capillary pipe according to GB/T1967-1996 “Porous ceramic hole diameter test method”. This instrument is mainly composed of three parts: gas supply bottle, electrical control box and sample fixture. It adopts precision low-range digital pressure measuring system to accurately measure test pressure value. The test gas is compressed air or nitrogen; The sample fixture is suitable for the sample with a cylindrical cross-section. The fixture ensures that the gas can only pass through the capillary pores of the sample during the test without leaking from the edge of the sample
Working principle
This method uses the gas bubble pressure method and the principle of capillary action to measure the pore size of the membrane, and the surface tension of the infiltrator affects the size of the pore size. It can be seen from the capillary action principle that when A capillary with radius r is wetted by liquid A with surface tension σ, the capillary liquid pressure P2 and gas phase pressure P1(liquid B is the gas phase) reach static equilibrium, the relationship between P2 and P1 can be described by Laplace equation:
ΔP=P2-P1=2σcosθ/r, whose flat θ is the contact Angle (cylindrical contact Angle is 0)
When the pressure difference between the two ends of the pore is greater than 2σcosθ/r, the liquid in the capillary will be removed, and the gas bubble pressure method is based on this principle to determine the pore size of porous materials. In the actual measurement process, the liquid with known surface tension sufficiently (saturates) wets the porous ceramic material holes (vacuums or boils), fixes the pressure at one end of the porous material, and creates a pressure difference with air or nitrogen at the other end. When the pressure difference is large to a certain value, the maximum aperture of the porous material is first opened, and the aperture is calculated according to the above formula.
Parameter teknis utama
1. Flow measurement range: 6ml ~ 3600ml/min
2, the test pressure 0-2MPa adjustable
3, digital pressure gauge measuring accuracy: 1±%℅, measuring unit Pa
4, standard sample size: diameter: Ø30±0.5mm
5, tegangan catu daya: 220V 50HZ.
Configuration: including one DKZ test host, one sample fixture.
