Mechanism of single-flange remote pressure transmitters
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As the title suggests, it would be good to have the principle explained; I’m not very familiar with this instrument.
There’s actually not much to say about this device – it’s simply a pressure transmitter that outputs a transmitted signal. Its interface is of the flange type, and the principles behind its operation are the same across different types: capacitive, piezoresistive, resonant, inductive, and so on.
The measurement points are connected using flanges; pressure changes are measured with gauge boxes, after which capillaries are used (if pressure transducers are employed, the gauge box should be located at the transmitter). The capillaries transmit pressure to the transmitter in the gauge box, which then converts the signal and sends it to the module, which carries out calculations and performs remote transmission. Generally, there are two types of signals: 1–20 milliampere current signals and intrinsically safe signals. These signals are fed into safety barriers and then to the card connectors. Single-flange pressure transducers are used to measure devices that are in communication with the atmosphere or to measure negative pressures (pay attention to the material choice for the flange surfaces to ensure corrosion resistance)