Press key to enter ORP calibration step. “ ” will be displayed.
Dip the sensor into any standard solution which the user already known the mV value in it. When the
value is stable and display “ ”, press keys to adjust the four-digit STD number at the
bottom row. So the value can be the same as the already known mV value. Press to confirm.
First point calibration is completed. You can go to second point calibration or press key to quit
and go back to measurement mode.
Press key in Ion measuring mode to enter the calibration step. “ ” will be displayed.
Dip the sensor into any standard solution which the user already known the concentration value in it.
When the value is stable and display “ ”, press keys to adjust the corresponding
concentration value at the bottom row(0.10, 1,10, 100, 1000, 10
4
, 10
5
mg/L). Press to confirm.
First point calibration is completed. Go to second point calibration. Change the standard solution.
When the value is stable and display “ ”, press keys to adjust the corresponding
concentration value at the bottom row(0.10, 1,10, 100, 1000, 10
4
, 10
5
mg/L). Press to confirm.
Second point calibration is completed (Factory default is 2 points calibration). Meter will go back
measurement mode after calibration. (To check the calibration results: long press for 3 seconds)
Measuring range: 0.000 mg/L, ppm ~ 99999 mg/L, ppm
Note: Five-element number displayed on screen. The lower in value, the higher in resolution.
Maximum resolution is 3-digit after the decimal point.
Calibration order from low concentration value to high concentration. Otherwise screen will display ERR.
18
ORP calibration
Ion calibration
