The old flow meter is broken; what needs to be set after installing a new one?
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For example, orifice plate flow meters, mass flow meters – do they require setting the range zero point? How do I know how much to set? What tools are needed? There are 475 manual controllers in the factory where I work. Newbies don’t understand; please teach us, teachers.
Differential pressure flowmeters come with calculation sheets; if it malfunctions, it’s either the transmitter that’s faulty and needs to be replaced, or the orifice plate that’s damaged and also needs to be replaced. If the transmitter is broken, just install one with the same range according to the calculation sheet. The orifice plate is broken; order a new one
475 is a great device – it’s a orifice plate flow meter. Generally, one only needs to set the differential pressure range and unit corresponding to the orifice plate’s design; the zero point can usually be determined using a three-way or five-way valve. For mass flow meters as well, a range and unit need to be set. If the zero level is not accurate, it can be adjusted by using the maintenance menu of 475. The menu options for HART instruments vary from manufacturer to manufacturer, so specific analysis is required
When replacing the transmitter of a orifice plate flow meter, it is necessary to set the range, medium density, differential pressure value, and whether to apply square root correction; for gases, temperature and pressure compensation as well as zero drift adjustment are also required； For mass flow meters, the range basically does not need to be set