What feature in timed dose systems cannot independently activate the pump without a timer?

In a timed dose system, the float is designed to indicate the water level in the tank, but it does not have the capability to independently activate the pump. The function of the float is primarily to provide a level measurement, which can be used in conjunction with a control system to manage the pump's operation. However, it relies on a timer or another control mechanism to initiate the pump's activation for dosing purposes.

The float serves an important role in monitoring water levels; when the water reaches a certain height, it can signal the control system to take action. Yet, without the timer or control logic, the float itself does not initiate a pump activation on its own. This distinction is key in understanding how a timed dose system operates, where synchronization between timers and other components is essential for effective and proper septic system function.