On the top most line of the screen below, select (Orifice) if your primary flow element is a thin-plate, Square-Edged Orifice. Then , select either Flange, Pipe, or Vena-contracta Taps on the next line.

Otherwise, if your primary flow element is a Long-Radius Nozzle, select (Nozzle). Then, select either Throat or Pipe Taps on the next line.

Entering the Metered Levels

The dimensions specified by the Metered Levels indicate the minimum, normal and maximum level readings on the differential pressure transmitter.

Enter the lowest metered level (lower limit on the level indicator or recorder) as the Bottom Tap to Lowest Metered Level. Specify the measured pressure at normal water level as the Bottom Tap to Normal Metered Level. Enter the highest metered level (upper limit on the level indicator or recorder) as the Bottom Tap to Highest Metered Level.

Entering the Conditions of the Reference Leg of Water

The Referenced Leg Water Temperature and Reference Leg Water Density identify the properties of the water condensed in the referenced leg of the transmitter impulse lines.

Entering the Condition of the Calibration Water

The Calibration Water Temperature and Calibration Water Density identify the properties of the water standard used to calibrate the differential pressure transmitter. Enter the base reference to which the instrument used to calibrate the transmitter is calibrated (i.e. actual water column, Wallace & Tiernan, etc.).