Regarding [flange pressure tapping], is the pressure tapping distance for all flowmeters with flange pressure tapping 25.4 mm?
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Since we manufacture flow meters, standard orifice plates are commonly used, with the pressure measurement distance being 25.4 mm in front of and behind the orifice plate. I would like to ask what is the pressure measurement distance for balanced flow meters? Anyway, the data sheet for this flow meter indicates flange pressure tapping – could it be 25.4 mm? Because we have never used a balanced flow meter
The balanced flow meter belongs to the second generation of orifice plates. The earliest version of such a flow meter was developed by NASA in the United States and was called the “A+QMC balanced flow meter”; it was later introduced to China for commercial use. It boasts excellent performance, with overall capabilities that are the best among all differential pressure flow meters. Currently, the manufacturing rights in China are held by “Aijia Fluid Control (Shanghai) Co., Ltd.” Orifice plate flow meters have three types of pressure tapping methods: corner tapping, flange tapping, and radial tapping. Flange tapping, also known as 1'' tapping, is the most commonly used method. For balance flowmeters, the “flange pressure tapping” also uses a 1'' connection; in other words, the distance from the pressure tapping point to the end face of the throttling element is 25.4 mm