Description: height of the centre of the exhaust pressure gauge; Name: height of exhaust pressure gauge 
Description: Height of the zero or centre position of the outlet manometer, or other point as defined by the manometer calibration ; Name: Height of the outlet manometer
Description: Determined total head at the outlet area of the installation, which corresponds to the sum of geodetic head, pressure head and velocity head ; Name: Total head at outlet area of the installation