The Power of Measurement; A Nostalgia

The first of the fundamental laws of process control reads as follows: “All process control starts with measurement, and the quality of control obtained can never be better than the quality of the measurement on which it is based”. Bob Connel; Process Instrumentation and Applications Manual.
Saya ingin menulis tentang pengukuran hanya sebagai nostalgia saja tentang [...]

InH2O Liquid Level; Diff Pressure Method

This is just for my own reminder to understand what InH2O is. InH2O is one of pressure unit we always find as an engineering unit on Differensial Pressure type Level Instrument. Why it is not Psi or Bar?. How to understand InH2O in easy way for level reading purpose? I was inspired to write down this posting [...]