Case Study: Iwaki achieves improved process control with Valin Corporation's time-proportional control solution

Iwaki improves pH control with Valin using 10-minute time-proportional cycles

The customer, Iwaki America Corporation, was exploring control strategies for processes like pH neutralization. Valin Corporation, through its expertise and likely its Walchem product line, presented time-proportional control as a solution to achieve precise control using simpler, more cost-effective on/off devices instead of complex modulating equipment.

The solution implemented by Valin utilized time-proportional control, which varies the on/off time of a solenoid valve or pump within a fixed period to achieve a proportional response. This approach provided Iwaki with a lower-cost, lower-maintenance option that was well-suited for applications with adequate retention time, such as tanks. The method improved process control and mixing while avoiding the expense and complexity of more sophisticated PID algorithms where they were unnecessary.

Iwaki