To produce an absolute pressure sensor, the manufacturer seals a substantial vacuum driving the sensing diaphragm. If the process-pressure link of the complete-pressure transmitter is open up for the air, it is going to read the actual barometric pressure. Force balancing: Force-balanced fused quartz Bourdon tubes utilize a spiral Bourdon https://minivariablefrequencydriv99763.buyoutblog.com/26101294/all-stainless-steel-diaphragm-pressure-gauge-an-overview