Gestational diabetes also known as gestational diabetes mellitus (GDM), is when a woman without diabetes, develops high blood sugar levels during pregnancy. Gestational diabetes generally results in few symptoms. It; however, increases the risk of pre-eclampsia, depression, and requiring a Caesarean section.
The first step of pressure testing is to make sure that all of the PEX tubing is undamaged and properly fastened to the manifold. The next step would be checking the fitting and manifold connections to ensure they are properly secured. If there are any connections that look like they should be re-done, then do so.
In a sealed-tube manometer, the pressure reference is a vacuum, or zero absolute pressure. The most common form of a sealed-tube manometer is the conventional mercury barometer used to measure atmospheric pressure. A manometer can be designed to directly measure absolute pressure. The manometer in Figure 5 measures the pressure compared to zero absolute pressure in a sealed leg above a mercury column. The most common form of this manometer is the conventional mercury barometer used to measure atmospheric pressure.