What is null & deflection type instrument?
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The document discusses and compares the null-type and deflection-type methods. The null-type method attempts to maintain deflection at zero by applying an opposing effect to counteract the measured quantity. It has advantages of being very accurate but can be more difficult due to adding different weights. The deflection-type method measures deflection when an opposing effect balances the measured quantity. It has the advantage of being more convenient but is less accurate than the null-type method.
What is null & deflection type instrument?
- 1. COMSATS INSTITUTE OF INFORMATIONTECHNOLOGY Advantages And Disadvantages Of Null-Type Method Submitted To: Mr. Arbab Shahid Submitted By: Hafiz khalid SP14-BME-057 Grade: __________ Checked By: __________ Date: __________ Department of Mechanical Engineering
- 2. Null-Type Method: A null-type device attempts to maintain deflection at zero by suitable application of a known effect opposing the generated by the measured quantity. ... The measured quantity produced somephysical effects that engenders a similar but opposingeffect in some part of the instrument. Deflection-type Method: The Measured quantity produced some physical effects that engenders a similar but opposingeffects in some part of the instrument. The opposingEffect increases until a balanced is achieved, At which point Deflection Is measured. Advantages And Disadvantages Of Null-Type Method Advantages They are Very much Accurate. They Are readily used for measuring. Disadvantages Due to addition Of Different weights involved this method become little difficult. Advantages And Disadvantages Of Deflection-Type Method Advantages Due to their convenient use these instrument are readily used for calibration . Disadvantages They Are less accurate.