How to install a geomembrane permeability coefficient tester? -Huaqiang Electronic Network

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How to install a geomembrane permeability coefficient tester?

Geomembrane permeability coefficient tester according to the standard

SL235-2012

Geosynthetics

"design production,

Test method applicable to the permeability coefficient of various geomembranes under water pressure, suitable for all kinds of geomembranes with waterproof performance, stable performance, convenient and practical

.

Geomembrane permeability coefficient tester installation and use:

1.

Pressure setting: press and hold the setting button after power on.

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”

Press the shift key"

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”

Press the adjustment button again"

+

"with"

--

”Re-adjust the value, adjust it, press the deposit button “back” to save it. After adjusting the lower limit value, press the save button to exit.

1

The hourly lower limit rises to

0.1MPa

Time clearing: re-do the experiment and keep pressing "

-

”The key is not released to clear the time, and you can't accidentally press it when you work.

2.

Time review: long press

"

t

”

Key pressure becomes minute display, let go

t

When the button is pressed, it will return to the pressure display.

3.

Zero adjustment: If there is no pressure after starting, if it does not return to zero, long press "

+

"Can be set to zero. Do not press the clear button when there is pressure, and then zero after releasing.

4

. Each group of samples should be no less than

3

Block, size and sample container should be matched, open the sample container, fill the water, put the sealing ring, sample, permeable stone and pressure ring in sequence, clamp the test piece

.

5.

The pressure regulating valve is gradually pressurized, and should be pressurized until there is no special requirement.

100kPa,

Also check the pipeline and the joints for leaks.

6.

Pressure added to the specified value

10min

The first reading is recorded and the water temperature is measured. The reading interval should be determined by the amount of water seepage.

60min

Read once and extend the interval when the amount of water seepage gradually decreases.

7.

The duration of the test can be less than the difference in water seepage between the two intervals

2%

As a stable standard, the amount of water seepage should be used as the test value at the next interval.