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How do you reduce error in measurement?
take reading 4 to 5 times, and take its average this will reduce error
How do you find zero error of screw gauge?
Take a measurement with nothing in the gauge. That reading is the zero-error.
What does mean zero error reading of vernier calipers?
The scale doesn't start at zero, so you need to compromise or you get a systematic error.
What error will be intoduced if you fail to set the zero point of the balance before making a reading?
The reading could be too high or too low.
What is the difference between an error as a percentage of full scale or an error as a percentage of reading?
Error as a percentage of full scale is established by multiplying the error percentage by the full scale flow. The less you flow through the device the less accurate the reading will be. For that reason, you don't want to get a larger device than you need. Devices with error expressed as a percentage of full scale are most accurate when flowing at full scale.Error expressed as a percentage of reading expresses error as a percentage of what the device is actually flowing. Simply, if a instrument's accuracy is rated to +/-1% of reading an instrument will be accurate to +/-1% of whatever the instrument is flowing. At 100SLPM the instrument will be accurate to within +/-1SLPM, and at 10SLPM of flow the unit will be accurate to within +/-.1SLPM.
