Bante Instruments 221 User Manual

31 I Conductivity
Selecting a Conductivity Electrode
The meter is capable of connecting the three types of conductivity
electrodes. Before the calibration and measurement, ensure that you
have selected a suitable electrode according to the anticipated sample
conductivity. The following table lists the selectable electrode and its
effective measurement ranges.
Electrode
Measurement Range
Cell Constant
CON-0.1
0.5 to 100 µ S/cm
K = 0.1
CON-1
10 µ S/cm to 20 mS/cm
K = 1
CON-10
100 µ S/cm to 200 mS/cm
K = 10
Conductivity Calibration
Automatic Calibration
The meter allows 1 to 5 points calibration in the conductivity mode.
Before calibration, ensure that selected cell constant (K = 0.1, 1, 10)
matches connected electrode. If you have selected the manual
calibration ( ), the meter will wait to enter a cell constant.
For better accuracy, we recommend to perform 3 points calibration or
select a standard solution closest to the sample conductivity you are
measuring. The meter will automatically detect the standard solution
and prompt the user to perform the calibration.
The following table shows the default standard solution for each
measurement range.
Measurement Range
Default Standard Solution
0 to 20 µ S/cm
10 µ S/cm
20 to 200 µ S/cm
84 µ S/cm
200 to 2000 µ S/cm
1413 µ S/cm
2 to 20 mS/cm
12.88 mS/cm
20 to 200 mS/cm
111.8 mS/cm
If you have changed the conductivity electrode, the meter must be
recalibrated. Every electrode has a different cell constant.
Single Point Calibration
1.1 Press the Mode key to enter the conductivity measurement mode
and select 1 point calibration in the setup menu.
1.2 Press the Cal key, the display shows ----/CAL1, the meter waits
for recognizing the standard solution.
1.3 Rinse the conductivity electrode with distilled water, then rinse
with a small amount of standard solution. Place the electrode
(and temperature probe) into the standard solution, stir gently to
remove air bubbles trapped in the slot of the sensor.
The meter will automatically show the calibration standard (e.g.,
1413 µ S/cm).
1.4 If necessary, press the  /  key to modify the calibration value.
Press the Enter key, the Calibration icon begins flashing.

Bante Instruments 221 Specifications

General

Brand	Bante Instruments
Model	221
Category	Measuring Instruments
Language	English