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The choice of electronic balance is mainly to consider the weighing and sensitivity of the balance should meet the requirements of weighing, the structure of the balance should adapt to the characteristics of the work. The principle of selection is: not only to ensure that the balance is not overloaded, but also to ensure that the weighing has reached the necessary relative accuracy, to prevent weighing with a balance that is not accurate enough, so as to avoid accuracy that does not meet the requirements; The balance of accuracy causes waste.
2î€ Correct installation
First of all, it is necessary to select a room with dustproof, shockproof, moisture proof and temperature fluctuation prevention as the balance room. The balance with higher accuracy should also be used in the constant temperature room. Secondly, the balance should be placed on a firm and reliable workbench and placed in an appropriate position for easy operation. Before the balance is installed, check whether the components are complete and in good condition according to the balance list of the balance; carefully clean all parts of the balance. When installing, refer to the balance's instructions, properly assemble the balance, and adjust the level. After installation, check the installation of each part again, then check if the power supply voltage meets the requirements of the balance, and then plug in the power plug.
3î€ preheating
Before starting to use the electronic balance, it is required to pre-boot, that is, to warm up for half an hour to one hour. If you want to use it multiple times a day, it is best to let the balance open all day. In this way, the electronic balance can have a constant operating temperature inside, which is conducive to the accuracy of the weighing process.
4î€ calibration
Electronic balances should be calibrated regularly from the first use. If used continuously, it is calibrated approximately once a week. Standard weights must be used for calibration, and some balances contain standard weights that can be used to calibrate the balance. Before calibration, the electronic balance must be warmed up for more than 1 hour and checked for level. Calibration should be carried out in accordance with the prescribed procedures, otherwise it will not function as a calibration.
5î€ Correct operation
When the electronic balance is weighed, the various control keys and function keys should be used correctly; select the best integration time, correctly grasp the reading and printing time to get the best weighing result. When continuously weighing with the tare key, you should pay attention to the balance overload. The balance door should be closed during the weighing process. After the electronic balance is used, the balance and door cover should be closed, the power supply should be cut off, and the dust cover should be covered.
Second, the maintenance of the electronic balance
1 î€The electronic balance should be kept clean, tidy and dry, and should not be washed, eaten or smoked indoors.
2 î€The electronic balance should be kept and maintained by a special person, and a technical portfolio should be set up to store the instruction manual, verification certificate, test record, and record the maintenance and overhaul regularly.
3 î€ The performance of the balance should be checked regularly. If the balance is found to be unqualified, it should be immediately deactivated and sent to a professional for repair. The balance can only be used after it has been repaired and qualified.
4 î€ The scale pan, outer casing and hood should be cleaned frequently. Generally, use a clean silk cloth with a little ethanol to wipe gently. No strong solvent is available. After the balance is cleaned, a non-corrosive desiccant should be placed in the frame and replaced regularly.
5 If the abnormal situation is found after starting the electronic balance, immediately turn off the balance and check the power supply, wiring, fuses, switches, sliding doors, objects, and operation methods. In short, in the maintenance of electronic balances, the use of personnel should be careful to ensure the integrity of the equipment.
Selection, use and maintenance of electronic balances
1î€Select the right electronic balance