Method for accelerating liquid level detection of pneumatic pipettor and pneumatic pipettor

The invention relates to a method for accelerating liquid level detection of a pneumatic pipettor and the pneumatic pipettor. The method for accelerating liquid level detection comprises the following steps: S1, presetting a first air pressure threshold PX and a second air pressure threshold PY; s2, the pipettor body executes one-time air suction operation, the pipettor body moves downwards along the Z axis, a pressure detection module detects the air pressure value P1 of a first detection port and the air pressure value P2 of a second detection port in real time, and an air pressure difference value delta P is obtained through calculation; s3, when the air pressure difference value delta P reaches a first air pressure threshold value PX, performing one-time exhaust operation, and enabling the pipettor body to continuously move downwards along the Z axis; s4, when the air pressure difference value delta P reaches a second air pressure threshold value PY, the pipettor body stops moving along the Z axis and sen