FlexPanels -分布面板

FlexPanels

Permeability testing measures the rate of discharge of water under laminar flow conditions through a unit cross-sectional area of a porous medium under a unit hydraulic gradient and standard (20°C) temperature conditions. In permeability testing, soil is subjected to water under a known pressure, and the flow is measured. 渗透系数(k), 或者简单的渗透性, expresses the ability of water to flow through the particular medium. The “constant head” test method is applicable to course granular soils such as sands and gravels. The “falling head” test method is applicable to fine grain soils. 任何一种方法都可用于测试粘土.

Humboldt FlexPanels
Humboldt FlexPanels provide a simple and highly efficient distribution system for providing air, water and de-aired water for use in permeability and triaxial testing applications. FlexPanel很简单, 简单的配置, with its integral burettes provides a condensed/compact design that takes up less counter space than competing systems with air/water bladders.

The long, narrow burette design of Humboldt’s FlexPanels provide faster test processing times when compared to larger, 较短的滴管系统, 同时提供相同的体积. This is due to the reduced amount of meniscus formation in the narrower burettes, 哪个能让水位下降得更快, 读取速度更快. In addition, the use of longer/narrower burettes and a scale graduation of 0.02ml, also provides an easier-to-read and more accurate scale.

FlexPanels also feature a bias regulator and bridge. The bias regulator maintains the differential pressure when confining and back pressures are increased. The bridge delivers simultaneous control of base and top pressures through the use of just one regulator. This feature minimizes operator time and reduces the margin of error in opening and adjusting regulators during a test. The Humboldt FlexPanel system is comprised of 5 separate panel configurations, which can be grouped together to accommodate from 1 to 6 cell setups.

快速和容易的设置和操作
Humboldt FlexPanels make setup fast and easy with clearly labeled ports and quick-connect hookups. Operation is just as easy with clearly labeled controls, 大量规和易于阅读的滴管标记.

All Humboldt FlexPanels use no-volume change valves and constant-bleed-type precision regulators for accurate control. All inlets and outlets utilize quick-connects to ensure fast, 准确设置渗透计细胞, as well as air, 供水和排水连接. Fittings, tubing and connectors are supplied with each unit. All FlexPanels are designed to handle air pressures up to 150 psi. 用于检测污染样本, 洪堡提供了一个可选的有毒界面单元, which prevents toxic fluids and vapors from entering the FlexPanel.

洪堡flexpanel的特点:
Humboldt FlexPanels are constructed of lightweight aluminum for long, rust-free life. FlexPanels provide an accurate and easy-to-operate solution for controlling compressed air, water, de-aired water and vacuum without the need for air/water bladder interfaces to produce the pressures necessary for permeability and triaxial testing. FlexPanels utilize a set of three burettes to control cell, top cap and base pedestal pressures. This extremely versatile pressure system controls the pressure, water, 脱气罐和真空从一个面板. The three burettes allow for the control of the cell pressure and the back pressure for each cell. They can monitor volume change in the sample and can be used to measure the flow of water through the sample for permeability testing.

FlexPanels can manually measure volume change or permeability in a triaxial test sample without the use of a volume change apparatus, a distinct benefit when compared to air/water bladder systems.

• Bias pressure regulator allows simultaneous control of confining and back pressures, 同时保持微分不变.
• Longer burette and 0.02ml graduation give more accurate results, better productivity, and faster turnaround.
• 采用无容积变化的Swagelock阀门
• Bridge feature delivers simultaneous control of base and top pressures by adjusting one pressure regulator simplifying testing.
• Quick-connect hookups for fast and reliable set up.
• Master control panel houses digital pressure readout for the controlling pressure, 进口真空调节器和压力表, 进口压力调节器和压力表, 去空气水箱控制, 自来水及去空气水供应口, 以及压力和真空出口.

Control Panels
The HM-4140 stand-alone control panel or the integral control panels on the HM-4150 and HM-4160 provide pressure controls and readouts for permeability and triaxial applications. 所有三个控制器提供相同的控制, 其中包括:数字, 读出式压力表, 压力供应计, 主压力调节器, a vacuum supply gauge, 一种主真空调节器制造技术, 去空气水箱控制, 自来水及去空气水供应口 以及压力和真空出口.

Auxiliary Panels
The HM-4150A and HM-4160A auxiliary panels provide additional sets of burettes, which can be used to expand the capacity of a system. Each set of three (3) burettes provide the controls necessary for another cell to be used. The HM-4150A provides one (1) set of burettes and the HM-4160A provides two (2) sets. Humboldt recommends any combination of up to six (6) burettes sets can be used with each control panel.