45
6
Digital Conductivity Meter
4
Press
HOLD/ENTER
5
Press
MI/
or
MR/
to select. “YES”
activates automatic calibration,
“NO” activates manual calibration.
6
Press
HOLD/ENTER
to confirm.
7
Press
CAL/MEAS
key twice to
return to measurement mode.
NOTE:
Parameter P9.1 will only be in the Set Up
menu if you enter from the conductivity measurement
mode. If you enter from the TDS measurement
mode, Parameter P9.1 will not be displayed.
6.4.5 Selection of Single or
MultiPoint Calibration (P9.2)
Single point calibration lets you have a single
calibration factor for all five ranges by calibrating
one point in either one of the ranges, this factor
is applied to all the five ranges.
Multi point calibration gives better calibration
accuracy by letting you calibrate in each of the
five ranges, this calibration factor would only be
applicable in the particular range where the
calibration is done.
1
Press
SETUP
.
2
Press
MI/
or
MR/
until you
view parameter P9.0 (ASC).
3
Press
HOLD/ENTER
. The upper
display will show “SPC”.
4
Press
HOLD/ENTER
.
5
Press
MI/
or
MR/
to select. “YES”
activates single point calibration,
“NO” activates multi point calibration.
6
Press
HOLD/ENTER
to confirm.
7
Press
CAL/MEAS
to return to measurement mode.
6.4.6 Automatic Calibration
(For Conductivity Calibration Only)
This procedure describes the method for
calibration to a 1413µs calibration standard.
NOTE:
Select automatic or manual calibration
as described in Selection of Automatic or
Manual Calibration.
NOTE:
Select single -or multi point calibration
as described in Selection of Single or MultiPoint
Calibration (P9.2).
NOTE:
To exit without confirmation, press
CAL/MEAS to go back to measurement mode.
1
If necessary, press MODE to select
conductivity mode.
2
Rinse the electrode with deionised water
or a rinse solution, then rinse with a small
amount of calibration standard.
3
Dip the electrode into the calibration standard.
Immerse the electrode tip beyond the upper
steel band. Stir the electrode gently to create
a homogeneous sample. Allow time for the
reading to stabilise.
4
Press CAL/MEAS to enter calibration mode.
The CAL indicator will appear in the upper
corner of the display. The primary display
shows the current measured value, the
secondary display shows the calibration
standard value.
5
Press HOLD/ENTER to confirm. The meter will
now return to the measurement mode. Multi
point calibration: repeat step 1 to 5 for every
calibration point in each measuring range
using the known calibration solutions until
all points have been calibrated.
6.4.7 Manual Calibration
(For Conductivity & TDS Calibration)
This procedure describes calibration to
a 12.00mS calibration standard.
NOTE:
Select automatic or manual calibration as
described in Selection of Automatic or Manual Calibration.
NOTE:
Select single -or multi point calibration as
described in Selection of Single or Multipoint Calibration.
NOTE:
To exit without confirmation, press
CAL/MEAS
to go back to measurement mode.
1
Repeat step 1 to 4 from Automatic
Calibration.
2
Wait for the value to stabilise and press.
MI/
or
MR/
, adjust the value in the upper
display to the calibration standard used.
3
Press
HOLD/ENTER
to confirm and return to
measurement mode. Multi point calibration:
repeat step 1 to 6 for every calibration point
in each range using the calibration solutions
until all points have been calibrated.
