5
D. Setup and Calibrate the Electrode and Meter
VisionPlus EC331 must be setup and calibrated before your
first use. Please follow the instructions detailed in section
USING VISIONPLUS EC331 6
.
USING VISIONPLUS EC331
A. Power On/Off
Press “On/Off ” key to turn the unit on. If the unit is running then
you can press ”On/Off “ key to turn the unit off. The unit will
automatically turn off after 10 minutes of no key activity.
[
Note:
The unit will not automatically shut off if it is still immersed
in solution even after 10 minute of no key activity.]
B. Calibrate Conductivity
1. Rinse the electrode & ATC assembly in distilled water and
immerse them in the standard solution of 147uS. The
temperature displayed is the solution temperature.
2. Press “Cal” key to initiate calibration. The “CAL” icon will
appear when the main display shows “147.0”. Calibration
is now complete. The “MEAS” icon will appear. The unit is
now ready to measure.
C. Measure
In the “Measure Mode”, dip the meter into the test solution.
Measuring for Conductivity (
℃
) commences. Press “Mode” key to
select: Conductivity(
℃
), Conductivity(
℉
), Resistivity (
℃
) and
Resistivity (
℉
).
[
Note:
If the “CAL” icon does not appear during measuring, it
means the unit has not been calibrated. Repeat the calibration
procedure.]
D. Hold Data
1. When the Conductivity or Resistivity reading is stable,
press “Hold” key once to lock the reading.
2. Press “Hold” key again to unlock reading and the unit will
