DuctChecker vs ISO

To determine the size of the duct constant pressure method, static pressure regain method, total pressure method, velocity method. Generally uses constant pressure method. This constant pressure method is how to determine the duct dimensions using the same value per 1 m on all duct friction loss. Usually determined by flow diagrams or duct design for slide rules. You can easily determine the duct by using this program.

ISO-5167 Orifice calculates size, flow-rate or pressure drop for gas and liquid flow orifice meters based on the International Standard Organization's ISO-5167. Orifice Size is calculated from given flow-rate and pressure drop, Flow-rate is calculated from given size and pressure drop and Pressure Drop requires orifice size and flow-rate. Different taps can be selected: Flange Taps, D and D/2 or Corner taps. Fluids include gases: Natural Gas (Specific Gravity must be provided), Air and Nitrogen, or liquids: Crude Oil, Water, Methanol, Mono-ethylene Glycol, Diethylene Glycol and Triethylene Glycol. In addition, selecting orifice material will adjust the sizing parameter of the orifice depending on temperature. Customary (US-units) or SI-units can be selected.