Pump, and method for its operation and for determining top and/or bottom dead center

The invention relates to a pump, which comprises a diaphragm type pump module (10) with at least one sensor. The sensor is used to detect the arrival of the top and/or bottom dead center of the diaphragm type pump module (10). Furthermore, the invention relates to a method for determining the top and/or bottom dead center. When the pump comprises an inlet (20) and an outlet (30). The operation ofthe pump can be a delivering operation mode and a returning operation mode. The inlet (20) is provided with an inlet valve (21). The outlet (30) is provided with an outlet valve (31). Each valve (21,31) comprises an enclosing element (22,32), which is arranged in an closing position to close the inlet (20) and the outlet (30); a reset element (23, 33), which is used to press the enclosing element(22,32) to the closing position by the reset force; and an actuator (24,34), which is used to move the enclosing element (22,32) out of the closing position. 本发明涉及一种泵，其具有带有至少一个传感器的膜片式泵模块（10），传感器设置用于探测膜片式泵模块（10）的上和/或下止点的到达。此外，本