1. Rogers S. Differential pressure; 2005 [cited 2008 April]. Available from: http://www.flowcontrolnetwork.com.
2. British standard 1042-1.4. Measurement of fluid flow in closed conduits, part 1: pressure differential devices; 1992.
3. ISO 5167-2. Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full, part 2: orifice plates; 2003.
4. Development of the orifice plate with a cone swirler flow conditioner;Ahmadi;Sensor Review,2005
5. Reader-Harris, Hutton SP, Laws EM. Flow straighteners and flow conditioning devices; 1989.