The operation for setting the high and low point control output values of the pH meter pH controller is as follows:

Press and hold the menu button for 6 seconds to enter the function menu. Find the Hial menu on the main display screen and directly use ∧ or ∨ to modify the parameters on the attached screen to the required high point control output value

● Use the ∧ or ∨ keys under the HB menu to modify the parameters on the attached display screen to the interval values to be controlled by the high point.

For example, it is required to control the addition of acid and maintain the pH value of the medium between 3-4.

Setting method: Hial is set to "3.5", Hb is set to "0.5"

● Use the ∧ or ∨ keys under the HiAL menu to modify the parameters on the attached display screen to the low point control target value.

● Use the ∧ or ∨ keys under the Lb menu to modify the parameters on the attached display screen to the interval values to be controlled for the low point.

For example, it is required to control the addition of alkali and maintain the pH value of the medium within

Between 9-10.

Setting method: LoAL is set to "9.5", Lb is set to "0.5".