True or False: Reset on integral time can be varied by manipulating the integral adjustment valve.

The statement is true because the reset on integral time can indeed be influenced by adjustments made to the integral adjustment valve. In control systems, integral action is responsible for eliminating steady-state error by integrating the error over time and adjusting the control output accordingly. By manipulating the integral adjustment valve, an operator can effectively change the rate at which the integral component responds to the error signal. This adjustment allows for fine-tuning of the system's response characteristics, enabling better control stability and performance.

In essence, the integral adjustment valve provides a means to customize how aggressive or mild the integral action is, thereby impacting the reset time and responsiveness of the control system.