Instrumentation Interview Questions and Answers



1 . How to calculate the flow rate in Vortex flow meter ? What is K factor ? Can you give me an example calculation to understand the same as better ?

Answer : Vortex flow meters are flow sensors that detect the frequency of vortices...



2. Why we don’t use 2-20mA, 1-20mA, 3-20mA or 10-50mA signal instead of 4-20mA ?

Answer : Generally, in a transistor some amount of voltage is required for turning it on...




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