Analytical balances are often used to count and weigh dynamic liquids, pasty materials or small insects or small compounds before conducting experiments. Analytical balances have an enclosed chamber that keeps the materials secured from external effectors. An electronic analytical balance is the modified version of the analytical balance which works on electricity.
How do the electronic analytical balances work?
These balances follow the basic principle of the analytical balances. This machine usually uses two different methods of electric balance methods to work efficiently. This is-
- Electromagnetic Balancing type and,
- Electrical resistance wire type or load cell type
Although these two designs are different they have one thing in common- these machines are not capable of measuring the mass. These machines measure the force which acts downwards on the weighing pan. The electronic analytical balance measures the force and changes the data into an electrical signal. The signal is then displayed in the numeric form on the digital display.
In the case of certain electrical analytical balances, the electromagnetic force plays an important part. This force is generated from a magnet and coil inside the machine. This coil is used to measure the material.
On the other hand, if you are using an electrical resistance wire type or load cell type analytical balance the working principle is different. These models note down the resistance value of a strain gauge attached to a piece of metal, This small piece of metal bends due to the downward force that a material puts on the weighing pan. This change in resistance is then used to display the measurement.
But the electronic analytical balances do show measurement in grams. That is because gram is a standard unit. And the samples you put in the weighting pan are a small amount of mass. But, the electronic analytical balances cannot display the mass value of any material accurately.
The electronic analytical balances also need regular maintenance. These machines work on electricity and use different methods. If you want this machine to function properly without any type of error then it is better to maintain them daily. Here are some regular maintenance methods that you can use-
You need to check the weighting capacity of the pan regularly. To check this you need to place anything with a pre-determined weight in the weighing pan of the machine and measure it. If the machine shows accurate data then it is all right. If the data is not right then you need to recalibrate it for proper function.
You need to check if the weighting pan has any type of moulds or fungal growth. If there is a sign then you can wipe out the weighting pan with a clean cloth or a wipe.
These are some facts and points you need to know about the electronic analytical balances. Global lab supply has a huge collection of different types of electronic analytical balances on its website. You can buy any preferred model from this well-known lab equipment supplier in a decent budget.