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Instructions for the Use of Electronic Balance:
1. Environmental Requirements for the Installation Room
(1) The room should be kept away from direct sunlight. Ideally, choose a shady room or use shading methods.
(2) Avoid sources of noise and vibration, such as railways, highways, vibrating machinery, etc. If this cannot be avoided, take anti-vibration measures.
(3) Avoid environments with sources of noise and heat, and high-intensity electromagnetic fields.
(4) The temperature inside the working room should be constant, ideally around 20°C.
(5) The relative humidity inside the working room should ideally be between 45% and 75%.
(6) The working room should be clean and free from airflow.
(7) The working room should be free from corrosive gases.
(8) The worktable should be sturdy and reliable.
2. Cleaning Requirements Before Installing the Electronic Balance
(1) First, use a brush to remove loose dust and other debris.
(2) Dust the weighing chamber and areas near the magnets with a damp silk cloth. Prevent dust and dirt from falling into the magnets, which could cause balance malfunctions.
(3) Wipe the balance and its components clean with a damp silk cloth (do not use solvents).
(4) Wipe the balance and its components clean with a clean flannel cloth to ensure the balance is clean.
3. Main Steps for Installing an Electronic Balance
(1) Select a suitable installation room with a suitable installation platform.
(2) Remove the outer packaging of the electronic balance, such as a wooden box or cardboard box, and store the outer packaging and shockproof items for future use.
(3) Check that the balance main unit and components are complete and in good condition.
(4) Clean and dust the balance main unit and components.
(5) Install the balance main unit and adjust the balance to a level position by adjusting the leveling feet at the bottom of the balance (this can be observed by observing the leveling device inside the weighing chamber).
(6) Install the balance's weighing ring, weighing pan, and other moving parts into place. Some weighing pans require rotation to secure them.
(7) Loosen the transport fixing screws or buttons and other locking devices (some electronic balances do not have this device).
(8) Set the external power supply selection button of the electronic balance to the local power supply voltage setting.
(9) Insert the external power supply and plug into the external power socket, and turn on the power switch of the electronic balance. Observe whether the balance display is normal. If the display is normal, preheat according to the instructions.
4. Precautions Before Operating an Electronic Balance
(1) The voltage range selected for the electronic balance should match the external power supply voltage at the point of use.
(2) The electronic balance should be level.
(3) The electronic balance should be preheated according to the instruction manual.
(4) When weighing volatile or corrosive substances, they should be placed in a sealed container to prevent corrosion and damage to the electronic balance.
(5) The temperature and humidity inside the balance chamber should be constant, with the temperature around 20°C and the humidity around 50%.
(6) Calibrate the balance to achieve optimal performance.
5. Main Steps for Operating an Electronic Balance
(1) Connect the power supply and preheat the balance to a standby state.
(2) Turn on the balance switch (press the lever or on/off switch) to zero the balance; otherwise, press the tare button.
(3) Place the container on the balance, read and record the value, and press the tare button to zero the balance again.
(4) Add the sample to the vessel until the desired weight is displayed, record the reading, and press the print button if a printer is available.
(5) Remove the container and sample together.
(6) Press the tare button to zero the balance for future use.
6. Tips for Properly Maintaining an Electronic Balance
(1) Regularly maintain the cleanliness of the balance room, especially the weighing chamber. Carefully clean up any spilled items promptly.
(2) Regularly self-calibrate or periodically externally calibrate the electronic balance to ensure its sensitivity and other parameters are in excellent condition.
(3) Store the balance properly when not in use for a long time.
(4) If the electronic balance malfunctions, repair it promptly; do not operate it while it is faulty.
(5) Do not overload the balance to avoid damage. In summary, by considering and implementing the above points, personnel using balances can effectively improve weighing accuracy, extend the balance's lifespan, and ensure product quality. Electronic balances are characterized by their simple structure, convenience, and fast weighing speed. They are currently widely used in enterprises and laboratories to determine the mass of objects. Currently, there are many types of electronic balances used in China, whether domestic or imported; whether large or small capacity; whether high or low precision, their basic structural principles are the same. Knowing how to properly install, use, and maintain an electronic balance to obtain accurate weighing results is one of the effective methods to ensure product quality.