14
[Note:
Press
“Slope/Enter”
key to accept any values
changes in each section and automatically advance to the
next section. If there are no changes, the unit accepts the
current value and proceeds to the next section.
]
TDS Constant
TDS is determined by multiplying conductivity (mS/cm) by a
TDS factor. The default factor value is 0.65. To change the
TDS factor, use the
“Up”
and
“Down”
keys to adjust the
value between 0.30 ~ 1.00. Press
“Slope/Enter”
key to save
the new value and go to the next calibration parameter.
Temperature Coefficient
The unit uses the temperature coefficient to calculate
temperature compensated conductivity. The default value is
1.91%. To change the Temperature Coefficient, use the
“Up”
and
“Down”
keys to adjust the value between 0.00 ~ 4.00%.
Press
“Slope/Enter”
key to save the new value and go to the
next calibration parameter.
Temperature Reference
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default value is
25
℃
. To change the temperature reference, press the
“Up”
and
“Down”
keys to adjust the value between 15 ~ 25
℃
.
Press
“Slope/Enter”
key to save the new value and go to the
next calibration parameter.
Probe Basic Cell Constant
The main display shows the Cell Constant of the conductivity
probe (calibrated previously or default, the deviation range is
70% ~ 130%). The secondary display shows the current
selected cell constant which is either 0.10 or 0.475. Press the
“Up”
and
“Down”
keys to select the one you want to use.
Press
“Slope/Enter”
key to save the new value and go to the
next calibration parameter.
Standard Solutions Calibration
Immerse the probe in a standard of known conductivity solution
(See section
Preparing Standard Solutions
), preferably a
standard in the middle range of the solutions to be measured.
Immerse the probe (at least 2” to 3” or 5 ~ 7cm from the tip)
without touching the sides of the calibration container. Shake
the probe lightly to remove any air bubbles trapped in the
conductivity cell. The unit will display the conductivity value.
