Questions and Answers
What does preventive maintenance for balances include?
Cleaning and some test procedures
When should a balance be shipped to the manufacturer?
When test results differ much from the balance's specifications
What is the first step before starting any maintenance or repair?
Short visual inspection
What is one of the aspects to check during the visual inspection?
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What should be smooth for a balance during the visual inspection?
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Study Notes
Tare Function
- The tare function on a balance sets the display to zero when a load is already on the balance.
- It is used when a sample comes in a container, allowing the net weight to be measured.
Measuring with Tare Function
- First, the empty container is measured.
- The tare button is pressed, resetting the display to zero.
- The filled container is then placed back on the balance.
- The result is the net weight of the contents.
Balance vs. Scale
- Both "balance" and "scale" are used to refer to weighing devices.
- In practice, "scales" are used for weighing larger masses, such as a baby scale.
- "Balances" are used for precise weighing of substances, typically in laboratories.
Types of Balances
- There are two main types of balances found in laboratories: precision balance and analytical balance.
- The key difference between them is their accuracy.
- Analytical balances are more precise and more expensive than precision balances.
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