Table of Contents
Why should the bubble be centered when using the balance What is the significance of the bubble?
The ideal position of the bubble is dead centre of the circle. This will give the balance its correct conditions for proper functionality. Its position should be relative to the circle as this will inform your next step. It is important to check the surface and environment in which the balance is to operate.
Why is a balance scale important?
Balance or scale calibration is essential to achieve accurate weighing results. Ignoring this important service activity turns measuring into guesswork. In other words, it is negligent to weigh with a non-calibrated balance or scale. The accuracy of balances and scales becomes less reliable over time.
Why is it important to calibrate a balance?
Properly calibrated balance gives accurate results and decreases probability of a weighing mistake which can cost extra time and money. It is safe to say, calibration is an investment that builds customer confidence. Using non-calibrated equipment can lead to production problems such as: unscheduled downtime.
How do I know if my balance is accurate?
The balance linearity test measures the ability of the balance to accurately measure an added weight before and after a non- measured weight load has been placed on the balance. The procedure is as follows. 1. Use 2 weights, each of approximately one-half the weighing capacity of the instrument.
Why front door of the balance is closed during weighing?
Why is the front door of the balance is closed during weighing? Close the balancing door while weighing an item to avoid disturbing reading by air currents. In order to avoid dust and dirt from entering the equilibrium, the operator should close the balance gate when completed.
What does a balance scale symbolize?
Balance Scales: These represent impartiality and the obligation of the law (through its representatives) to weigh the evidence presented to the court. Each side of a legal case needs to be looked at and comparisons made as justice is done.
What does it mean to calibrate a balance?
Calibration involves checking the reading given on the balance against standard known-mass calibration weights. Most electronic balances in an educational setting require Span Calibration, which involves calibrating the balance at two points on its scale. These are usually zero and maximum capacity.
When should we calibrate the balance?
For the best accuracy, the balance should be calibrated regularly or if the local ambient temperature changes more than two degrees Celsius and you are making high-accuracy measurements.
How is the balance leveled?
Preparing the balance for use To check the leveling on the balance, look at the leveling bubble on the floor of the weighing chamber. If it is not centered, center it by turning the leveling screws on the bottom toward the back of the balance. This indicates that the balance is zeroed and ready for use.
How do you know the balance is level?
Check the balance is level using the level indicator (see Figure 1). If the bubble is not in the centre adjust the level, normally by twisting the feet, until the bubble is in the centre of the inner circle. Check that the balance is on and that the door is closed.