Geomembrane permeability coefficient tester "installation and use method" - Database & Sql Blog Articles

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Geomembrane permeability coefficient tester

Installation and use

1.

Pressure setting: press the set button after power on.

MPa

”

press

Add, subtract,

key

Adjust the pressure

. Press the Enter key to adjust the pressure of the upper, lower and limit.

After adjusting, press the save button "

confirm

"Save in. After adjusting the lower limit value, press

confirm

The key can be exited.

1

The hourly lower limit rises to

0.1MPa

Time clear: re-do the experiment, press "

Adjust the zero point

"You can clear the time and you can't accidentally press it when you work."

2.

Time review: press

"

time setting

”

Key, at this time, the time display shows the set time value, click "

Enter

”

The key exits the time query process. 3.

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

Zero adjustment

"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.

After the test is completed, the surface of the instrument is cleaned and coated with anti-rust grease for next use.

Geomembrane permeability coefficient tester

Precautions;

1. If a black screen appears, check the line, use a multimeter to check if the power cord has electrical input, open the back cover of the chassis, and check if the instrument plug is loose. If it is still black screen, please contact the manufacturer.

2. If it is not used for a long time, in the experiment, the pressure can not be used for a long time. Please check if the steel ball in the pressurized copper valve has rust. If there is rust, please wipe it with a dry cloth. Be careful not to apply oil.

3. When the test piece is attached, pay attention to the screw to be evenly tightened.

4.

If the test piece is leaking, apply glass glue to the test piece and apply the glass glue according to the size of the apron.