Principle of commonly used brand pressure transmitters
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Online, pressure transmitters are categorized into piezoelectric, piezoresistive, strain-gauge, capacitive, and resonant types, but it’s not clear what the specific principles behind the common brands and models are. For example, what is the principle behind the Ganges EJA?
For example, the EJA differential pressure transmitter uses single-crystal silicon resonant sensor technology
There are many types of monocrystalline silicon resonant and capacitive ones.
Rosemount ones seem to be piezoresistive and capacitive
The Yokogawa EJA series is of the single-crystal silicon resonant type
For this, being familiar with well-known brands and knowing how to select them is far more important than understanding the principles behind them. Many factories in the country understand the principles much better than others, but they simply can’t do it well. So you know, the principle isn’t very helpful to users.
Chongqing Yokogawa EJA – single crystal silicon principle; Beijing Yuandong Rosemount 3051 – piezoresistive and capacitive types; Chongqing CHUANYI PDS – composite silicon principle; Siemens 7MF – diffused silicon; Honeywell ST3000 – composite silicon principle
There’s no need to understand the principles; just knowing how to select the right option is sufficient