Hanna Instruments EC 214 - Manual (Page 5)

9 8
Power connection
Plug the 12 Vdc adapter into the power supply socket.
Note: Make sure the main line is protected by a fuse.
Probe connection
Connect the conductivity probe to the proper socket on the rear panel.
Note: Make sure that the instrument has been calibrated before
taking any measurement (see “Calibration” section).
Note: If possible, use plastic beakers to minimize EMC interferences.
TAKING CONDUCTIVITY MEASUREMENTS WITH EC214
• Switch the instrument on by pressing ON/OFF.
• Immerse the probe in the solution while com-
pletely submerging the holes of the sleeve. Tap
the probe lightly on the bottom of the beaker
to remove any air bubbles trapped inside the
sleeve. Measure the solution temperature with
a
Checktemp or another accurate thermom-
eter.
• Press the “COND/°C” key to select temperature
setting.
• Adjust the “TEMPERATURE” knob to display the temperature of
the solution on the LCD.
• Press the “COND/°C” key to select conductivity
reading.
• Select the appropriate conductivity range.
OPERATIONAL GUIDE
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
• Allow a few minutes for the reading to stabilize. The LCD will
display the temperature compensated conductivity reading.
TAKING CONDUCTIVITY MEASUREMENTS WITH EC215
• Switch the instrument on by pressing ON/OFF.
• Immerse the probe in the solution while com-
pletely submerging the holes of the sleeve. Tap
the probe lightly on the bottom of the beaker to
remove any air bubbles trapped inside the
sleeve.
• Adjust the "TEMPERATURE COEFFICIENT" knob to the temperature
coefficient value of the solution (see “Determination of the Tem-
perature Coefficient of a Solution” section for details).
• Select the appropriate conductivity range.
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
• Allow a few minutes for the reading to stabilize. The LCD will
display the temperature compensated conductivity reading.