Differential pressure transmitter
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How is the measurement range of a differential pressure transmitter determined? In what applications are the 2-inch and 3-inch flanges of the EJA118W differential pressure transmitter used?
The range of the differential pressure transmitter should be selected according to the process requirements; generally, the flange size for higher differential pressures is 2 inches, while it is 3 inches for low differential pressures.
Specifically, what requirements of the process are involved? The descriptions of the usage scenarios for 2-inch and 3-inch ones are too vague, aren’t they?
The measurement range of the differential pressure transmitter is set according to actual needs; when measuring liquid levels, attention should be paid to the drift amount.
Generally, if the medium to be measured is prone to crystallization and clogging, a 3-inch flange should be chosen.
The measurement range of a differential pressure transmitter is determined at the time of manufacture, with the manufacturer’s model corresponding to a specific measurement range. You should determine the range of the differential pressure transmitter based on your process conditions, and then place an order with the manufacturer to select the most suitable measurement range. As for 2 or 3, both the second floor and the third floor are absolutely correct. Generally, 3\" is used in applications such as micro-differential pressure.
I’m just asking how to determine the range – how is it determined based on the process conditions? Could you be more specific?
Range = Flange spacing * Medium density
The range is related to the density of the medium being measured and the distance between the flanges; that is, range = pgh, where p is the density of the medium and h is the distance between the flanges
It is necessary to conduct a specific analysis to determine what proportion of the maximum range should be used for the transmitter. *As a general rule, the actual operating range of the transmitter should be around 3/4 of the instrument’s maximum range. That is, if the actual operating range is 0~75 Kpa, it is advisable to choose a maximum measurement range of 0~100 Kpa for the instrument