Pressure sensor zero-drift calibration device for water level measurement

The invention discloses a pressure sensor zero-drift calibration device for water level measurement. The device comprises a mounting shell, a sealing block and a supporting rod. A storage battery is fixedly mounted in the mounting shell; and a wireless communication module and a PLC controller body are fixedly installed at one side inside the mounting shell. An ultrasonic sensor body is fixedly mounted at one side of a fixing block at a lens position; the supporting rod is rotatably mounted in a threaded mounting block; and an absolute pressure type pressure sensor body is fixedly mounted at the bottom in the supporting rod. According to the pressure sensor zero-drift calibration device, measurement is carried out through mutual cooperation of the absolute pressure type pressure sensor body and the ultrasonic sensor body, thereby avoiding long-term immersion of the device in liquid and solving a problem of fatigue of the absolute pressure type pressure sensor body under long-term pressures; and with a set sta