6
OPERATIONAL PROCEDURES
A. Calibration
Calibration setup contains six sections: TDS Constant,
Temperature Coefficient, Temperature Reference, Probe
Basic Cell Constant, Standard Solutions Calibration and K
Value Input. To access these sections:
1.
Connect the conductivity probe to the unit and turn the unit
on.
2.
In conductivity, TDS or salinity mode, allow temperature
reading to stabilize, press
“Cal”
key to enter the calibration
mode. “CAL” icon appears on the LCD.
[Note:
Press
“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
“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
“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
“Enter”
key to save the new value and go to the next
calibration parameter.
