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11.0 Pocket Conductivity Sensor
11.0 Pocket Conductivity Sensor
The Pocket Conductivity Sensor is a
The Pocket Conductivity Sensor is a
waterproof digital instrument featuring dual
waterproof digital instrument featuring dual
display of Conductivity and Temperature.
display of Conductivity and Temperature.
11.1 Before You Begin
11.1 Before You Begin
Remove the electrode's protective cap. Soak the
Remove the electrode's protective cap. Soak the
electrode for a few minutes in alcohol to remove
electrode for a few minutes in alcohol to remove
any oil stains on the electrodes. Rinse thoroughly
any oil stains on the electrodes. Rinse thoroughly
with de-ionised water and shake to dry.
with de-ionised water and shake to dry.
Press ON/OFF key to switch on the tester.
Press ON/OFF key to switch on the tester.
11.1.1 Range Selection
11.1.1 Range Selection
1 Switch off the tester. Press and hold °C/°F
1 Switch off the tester. Press and hold °C/°F
key and then switch on the tester using
key and then switch on the tester using
ON/OFF key. Release °C/°F key.
ON/OFF key. Release °C/°F key.
2 The LCD shows the currently selected Range
2 The LCD shows the currently selected Range
(the default is AUTO) in the lower display.
(the default is AUTO) in the lower display.
The upper display shows the maximum
The upper display shows the maximum
possible reading for the selected range.
possible reading for the selected range.
Press HOLD key repeatedly until you see
Press HOLD key repeatedly until you see
the required range (PU, LO or HI).
the required range (PU, LO or HI).
Pocket Conductivity Sensor
11.1.2 Measurement
11.1.2 Measurement
1 Press the ON/OFF key to switch on the tester.
1 Press the ON/OFF key to switch on the tester.
The 'MEAS' indicator appears when the
The 'MEAS' indicator appears when the
tester is in measurement mode.
tester is in measurement mode.
2 Dip the electrode into the test solution making
2 Dip the electrode into the test solution making
sure that it is fully immersed. Stir to clear any
sure that it is fully immersed. Stir to clear any
trapped air bubbles from the electrode and
trapped air bubbles from the electrode and
let the reading stabilise.
let the reading stabilise.
3 The upper display shows the main reading
3 The upper display shows the main reading
(conductivity) of the solution, automatically
(conductivity) of the solution, automatically
temperature compensated (ATC) to normalised
temperature compensated (ATC) to normalised
temperature of 25°C. The lower display shows
temperature of 25°C. The lower display shows
the temperature of the solution.
the temperature of the solution.
11.1.3 Calibration
11.1.3 Calibration
Auto Calibration
Auto Calibration
1 Make sure the tester is in measuring mode.
1 Make sure the tester is in measuring mode.
Press INC or DEC key to enter conductivity
Press INC or DEC key to enter conductivity
calibration mode.
calibration mode.
2 'CAL' indicator appears in LCD. The display
2 'CAL' indicator appears in LCD. The display
briefly shows 'CAL' and the number of points
briefly shows 'CAL' and the number of points
the tester will be calibrated.
the tester will be calibrated.
3 The upper display shows the conductivity
3 The upper display shows the conductivity
reading and the lower display sequentially
reading and the lower display sequentially
shows calibration standard values 84μS,
shows calibration standard values 84μS,
1413μS & 12.88mS if the measuring range
1413μS & 12.88mS if the measuring range
of the tester is set to AUTO.
of the tester is set to AUTO.
4 Rinse the electrode with the calibration
4 Rinse the electrode with the calibration
standard that you intend to calibrate and
standard that you intend to calibrate and
then dip the electrode in the other beaker
then dip the electrode in the other beaker
with same calibration standard. Swirl gently
with same calibration standard. Swirl gently
to create a homogenous sample and allow
to create a homogenous sample and allow
time for the reading to stabilise.
time for the reading to stabilise.
5 Press HOLD/ENT key to confirm the
5 Press HOLD/ENT key to confirm the
calibration. LCD shows 'CO' for 2 seconds.
calibration. LCD shows 'CO' for 2 seconds.
6 For multi-point calibration, the tester goes to
6 For multi-point calibration, the tester goes to
the next calibration point. Rinse the electrode
the next calibration point. Rinse the electrode
in de-ionised water and repeat steps 4 & 5
in de-ionised water and repeat steps 4 & 5
with next calibration standard solution.
with next calibration standard solution.
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