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TELEGRA sensors for liquid level measurement are pressure sensors. Submersible static pressure level transmitters (level gauges) operate on the principle that the static pressure of the measured liquid is proportional to its height. They use advanced imported isolated diffused silicon sensitive elements or ceramic capacitive pressure sensitive sensors to convert static pressure into electrical signals, which are then temperature-compensated and linearly corrected into standard electrical signals (typically 4 to 20mA/15VDC). TELEGRA sensor classification 1) Speed sensors Editor: Speed sensors integrate speed detection and monitoring. Sensor