51
TEMPERATURE CALIBRATION
The user temperature calibration menu can be accessed during meter startup by simultaneously pressing
three keys as shown in the drawing below. Press the keys after the short beep is heard at the meter power
on. Keep all three keys pressed until Temp. Calibration menu appear.
Note
: The user temperature calibration is performed at three points: around 0 °C, 50 °C and 100 °C.
To perform the user temperature calibration:
• Select the desired temperature channel by pressing
(the temperature channel is switched
between temperature EC channel and temperature pH channel).
• Press
to start the temperature calibration. Adjust the
temperature preset value using
or
when
necessary.
• Insert the EC probe into the beaker with water at 0 °C.
• Wait for measurement to stabilize and then press
to
confirm the calibration point.
• Repeat the previous steps for 50 °C and 100 °C.
• Save the calibration.
• Press
to return to measure mode.
Note
: Press
if you want to clear the temperature user
calibration.
a
0
=0.008
b
0
=0.0005
A
1
=2.070·10
-5
c
0
=6.766097·10
-1
a
1
=-0.1692
b
1
=-0.0056
A
2
=-6.370·10
-10
c
1
=2.00564·10
-2
a
2
=25.3851
b
2
=-0.0066
A
3
=3.989·10
-15
c
2
=1.104259·10
-4
a
3
=14.0941
b
3
=-0.0375
B
1
=3.426·10
-2
c
3
=-6.9698·10
-7
a
4
=-7.0261
b
4
=0.0636
B
2
=4.464·10
-4
c
4
=1.0031·10
-9
a
5
=2.7081
b
5
=-0.0144
B
3
=4.215·10
-1
B
4
=-3.107·10
-3