16
7+Series Version 2.0
Conductivity Calibration
example of calibration at 1413μS/cm
Rinse conductivity electrodes in pure water, allow it to dry, wash with a little of standard solution and submerge it in
standard solution. Stir the solution briefly and allow it to stay in the solution until a stable reading is reached.
Press
key to enter into the calibration mode. The meter’s display will show blinking “std” at the top right, and
scanning and locking process of calibration solution at the bottom right.
Er 2 appears if press
key before the value is stable.
When the meter locks 1413 μS, stability icon displays on LCD. Press
key to calibrate the meter. End icon appears
after calibration is done. The meter returns to the measurement mode
and LCD shows
icon at the bottom left.
If return from calibration mode without calibration, press
key to return to the measurement mode without
calibration.
For multi-point calibration repeat the procedure.
Customer calibration
example of calibration at 147μS/cm
Select CUS in the setup menu P2.2; the meter enters into customer-defined calibration mode. When press
LCD
shows blinking CUS at the top right, indicating that the meter enters into customer-defined calibration.
Rinse the electrode in pure water, allow it to dry, and submerge it in 147 μS/cm standard solution. Stir the solution
briefly and allow it to stay in the solution until a stable reading is reached and stability
icon appears on LCD.
When press
key, the measuring value blinks. “CUS” icon appears at the right top of the screen. Press
and
key to adjust the measuring value to 147 μS/cm, and press
key to calibrate the meter. After the
calibration is done, the screen shows “End” icon and returns to the measurement mode.
Note: When there is no temperature sensor and manual temperature compensation (MTC) is adopted, the
Submerge the cell in a conductivity standard
solution:
•
84 μS L
•
1413 μS M
•
12.88mS H
•
111.9mS H
Press
key when
icon appears, to
confirm the calibration, the meter enters into
measurement mode automatically.
Sampe
Test
Press
to turn
on the meter
Press
key to
enter into the
calibration mode
Multipoint calibration
Single point
calibration
