hysteresis

Definition

The appropriate product category Temperature Controllers: For ON/OFF control, the output is turned ON and OFF according to the set value. A very small change in temperature could cause the output to change frequently. This shortens the life of the output relay or unfavorably affects some devices connected to the Temperature Controller. To prevent this from happening, a temperature band called hysteresis is created between the ON and OFF operations. The temperature band is called the hysteresis.