I'm controlling temperature by using voltage pulse output to operate a heater with an SSR, but I can't stop the hunting. I already performed auto-tuning.

Temperature Controller with increased monitoring and operating capabilities

Increase monitoring and operating capabilities

Program Controllers with 4 patterns, 40 segments, and ladder sequence functions

Program controller with 30 patterns, simultaneous monitoring, and ladder sequence function

Digital Indicating Controller with selectable 2-loop control and intuitive design

Increase monitoring and operating capabilities