1. Method of operation
(1) Operating instructions:
The operation keys are described below:
CAL key: calibration, the calibration mode is activated, and the calibration menu is displayed.
Key: Number plus;-key: Number minus; E key: Confirm key
REL1: Manually operate the relay key. REL2 is: one key is relay manual/automatic switching key.
(2) Range setting steps
A: main interface-press e --- code 0 --- press "" until 22 --- press e --- setup1 --- press e --- press "" or "-" --- select ORP --- press "e" to confirm
B: main interface-press e --- code 0 --- press "" until 22 --- press e --- press "-" --- output --- press e twice, select
Select 4-20mA-Press E-Set 4mA-Press E-Set 20mA-Press E-Set 20mA-Press E
2. Maintenance Precautions:
Rinse the electrode regularly with clean water for a period of one month.
The electrodes are calibrated periodically for a period of three months.
3. Instrument calibration