lakhanrathi1989 Member Member since Jul 14, 2010 Last active Jul 16, 2010 Total activities 0 Activity feed Recent contributions #Threads 16 years ago 6888d553-7696-475c-a292-4862cf7104ae u just write the whole problem descriptively......... i can help u #Threads 16 years ago standard signal why for transmission a standard signal of 4-20 mA is used and why not 0-20mA? whats is the scientific reason behind it?