Electronic density meter is a precision instrument for detecting the density of various objects. It needs to be paid attention to during use and daily maintenance to ensure that the electronic density meter has a longer service life and a higher cost performance. 1. Precautions before use: 1) Before using the electronic density meter and after moving the position, please perform weight calibration. Second, the precautions when using: 1) Do not place the measurement object containing static electricity directly on the electronic density meter to measure, otherwise it will affect the measurement result. 2) During the test, you must avoid accidentally dropping water droplets on the measuring table, otherwise it will affect the accuracy of the measured value. 3) When operating, you need to be careful to put it gently, and place the measured object in the center of the measuring table. 4) During the measurement, the objects placed on the Pendant in the water must be completely submerged in water, and ensure that there are no bubbles on the surface of the sample being measured. 5) Before each measurement, press the zero key to return to zero to avoid measurement errors. 3. Special precautions: 2. If it has not been used for a long time, the water in the sink should be emptied and wiped clean to avoid air bubbles in the air sticking to the sink. 3. Do not place the electronic density meter in direct sunlight or near the air conditioner. Do not place the electronic density meter in a place with strong magnetic strength and a place with a lot of dust. 4. Avoid falling and impact of the electronic density meter. 5. Do not disassemble the electronic density meter accessories by yourself. 6. Do not use organic solvents to wipe the electronic density meter 7. Avoid the penetration of dust and water into the electronic density meter, and pay attention to the daily maintenance work of the electronic density meter. 8. The instrument must be placed in a dry and clean environment, and arrange for someone to keep it; if it is not used for a long time, the power supply must be unplugged, and the measuring table and the sink must be removed. Prayer Bracelet,Howlite Beads Bracelet,Prayer Beads Bracelets JOYA GIFT CO.,LIMITED , https://www.joyagifts.com