5
the measured pH value of the solution is lower than the value of High
alarm, furthermore lower than the hysteresis, the AH alarm light will be
turned off and the high relay (N/O) open.
(3) AL alarm light
，
Under the conditions of setting low alarm, when the
measured pH value of the solution is lower than the value of low alarm, the
AL alarm light will be turned on and the low relay (N/O) close; When the
measured pH value of the solution is higher than the value of low alarm,
furthermore higher than the hysteresis, the AL alarm light will be turned
off and the low relay (N/O) open.
(4) SET indicator light, the light will be turned on when entering the setting
state.
(5) uS/cm indicator light. When the light is lit in the measurement state
，
means the measured value is conductivity, and unit is uS/cm.
(6) M
Ω·
cm indicator light. When the light is lit in the measurement state
，
means the measured value is resistivity, and unit is M
Ω·
cm.
(7)
indicator light. When the light is lit in the measurement state
，
means the
measured value is Temperature; When the light is lit in the setting state,
means the input parameter is Temperature.
(8)
MENU
，
Press the
MENU
key to enter or exit the setting state.
(9)
▲
，
In setting state, using the
▲
key the user can cycle through the
front menu. To adjust a value, the
▲
key is used to select a digit
.
(10)
▼
，
In the setting state, using the
▼
key the user can cycle through
the next menu. To adjust a value, the
▼
key is used to increment the
digit
.
(11)
ENTER
key is the enter button to confirm enter the menu and store
the setting parameters.
