TD118-4 computer combined determination instrument for soil liquid plastic limit

1. TD118-4 computer soil liquid and Plastic limit combined tester is developed by Hebei Tianqi Xingzi Testing Equipment Co., LTD., according to the TD118-2007 "Liquid and Plastic Limit Combined Determination Method" of the People's Republic of China Hengye Standard: JTG E40-2007 "Road Geotechnical Test Regulations". It is used for particle size less than 0.5mm. The SOIL WITH ORGANIC mass less THAN 5% OF THE total mass OF the sample is used to determine the limit water content (liquid limit and plastic limit) of the soil, so as to divide the soil class, calculate the natural consistency and plastic index, which is an essential instrument for highway engineering design and construction. Using advanced capacitive digital display displacement sensor, MCU control technology, CMON circuit and electromagnetic technology developed to measure the soil liquid limit, plastic limit, plastic index, natural consistency and other technical indicators of the instrument. The use is simple and convenient, without time drift, temperature drift, realized the experiment process automation, digitization, for our country highway, municipal, water conservancy, construction and other fields provided a kind of modern soil test instrument with high precision, high stability and high reliability.

standard

Low ISO 17892-17 (E) were disappointed

Ii. TD118-4 computer soil liquid plastic limit joint measuring instrument technical parameters

1, the maximum range of 25mm, error 0.05mm

2, cone Angle: 30°±0.2°

3, cone weight: 100g±0.1g 76G ±0.1g

4, the minimum indexing value: 0.01mm

5, weight: 76±0.1g

6, four liquid crystal digital display

7, power 220V/50HZ

8. Sample cup 50X40mm

9. The instrument working platform is equipped with a level adjustment mechanism.

Iii. TD118-4 computer soil liquid plastic limit joint tester Installation and commissioning:

1. After unpacking, check whether the instrument is faulty due to transportation.

2, according to the packing list check whether missing parts, timely inform the sales department of the company.

3. Plug in the power supply and turn on the power supply. At this time, the display data "05" indicates the timing 5S.

4. In order to ensure the measuring accuracy of the instrument, press the start key of the instrument after 20S power on, and the cone connecting rod should fall freely at this time.

5, adjust the instrument level, the method is as follows: rotate the adjusting foot, so that the horizontal bubble is in the center position, at this time, the working plane has been in the horizontal position.

Iv. Instructions for use of TD118-4 computer soil liquid plastic limit joint tester:

1. Take representative natural water content or air-dried soil samples for test. If the soil contains more than 0.5mm particles or inclusions, the air-dried soil sample can be used to crush the soil with a pestle with a rubber head or crush the soil block on the rubber shaft with a wooden stick. The test must be repeatedly ground and sieved until all the ground clods are passed through the 0.5mm sieve. The soil sample under the sieve is prepared by the three-dish method or the one-dish method.

2. Stir the prepared soil sample thoroughly, put it into the soil sample test cup in layers, and press tightly to make the air escape. For dry soil samples, they should be rubbed thoroughly and compacted repeatedly with a soil adjusting knife. When the cup is full, scrape it flush with the rim.

3. Turn on the power supply, level the fuselage, turn on the switch, and install the cone.

4, will be the good soil sample test glass on the lifting seat, hand push the lifting seat shifter lever, try to make a cup of the rising, the surface of the soil sample and the cone just contact, stop turning bar, press the start key, sensors, cone immediately to sink at the same time, 5 s shown on the LCD when the cone depth, according to retention time at least 5 seconds, after test, the cone up in hand, Cone reset (the upper end of the cone has threads, which can match the thread of the measuring rod). 5, change the contact position of the cone tip and soil (the distance between the two cone tip cones into the position is not less than 1cm), repeat the 4 steps to measure the depth of the cone into the sample, allowing an error of 0.5mm, otherwise, it should be done again.

6, remove the cone tip into the soil of petroleum jelly, take more than 10g soil samples of two, respectively into the weighing box, weighing (accurate to 0.01g) to determine the water content of ω.1, ω.2, (calculated to 0.1%). Calculate the average water content ω.

7. Repeat steps 2 to 4 to test the soil samples with water content, and measure the coning depth and water content.

Five, maintenance and maintenance

1. After the completion of each test, the instrument shall be comprehensively cleaned to prevent dirt and dust from remaining on the instrument. Optical components shall not be directly connected to the door by hand to prevent scratches.

2. After cleaning, put the instrument in the box and place it in a dry place away from direct sunlight

Vi. TD118-4 COMPUTER soil liquid plastic limit joint tester calibration method

1. Visually inspect the falling situation of the cone after power failure.

2, use the balance to measure the mass of the cone, accurate to 0.1g.

3. After measuring the diameter and height of cone bottom with vernier calipers, calculate the Angle of cone Angle, accurate to 0.1°.

4, use vernier calipers to measure cone Angle abrasion, accurate to 0.1mm. Verification result processing: all items meet the technical requirements for qualified.

7. TD118-4 computer soil liquid plastic limit joint tester Notes:

1. In the test, when the cone connecting rod falls behind and needs to be lifted again, just push the measuring rod gently into place and it can be automatically locked.

2. When the sample cup is placed on the instrument working platform, it needs to be gently placed flat, not colliding with the table, but should avoid other metals and other objects colliding with the table, which helps to maintain the flatness of the platform.

3. At the end of each test, the standard cone should be removed, dried with cotton or cloth, and stored in a dry place.

4, wipe the bench and sensor rod, cover the instrument with a clean cloth cover.

5, without the consent of the manufacturer, the user shall not disassemble the instrument, so as to avoid damage.

6. The counterweight block should be tightened in place on the thread above the standard cone, with moderate intensity and should not be too fierce.

7, before and after the test, should ensure that the rod is clean.

8, if the power supply voltage is unstable, "crash" phenomenon, the function of the key lost, please turn off the power, after 3 seconds, restart can be.

9. To ensure safety, please pay attention to grounding.

Viii. TD118-4 computer soil liquid plastic limit combined tester Packing list:

1. One liquid-plastic limit host.

2. One power cable.

3. The counterweight is 76±0.1g.

4, sample dish 1.

5, a copy of the instruction manual.

6. One copy of qualification certificate