ELMETRON CX-401, Руководство пользователя

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User‘s manual for CX-401 multifunction meter v6.0x
For more significant differences between the measurement and reference
temperatures the value of the
α
coefficient may be determined according to
the description below:
1. Adjust the temperature of the measured solution to the reference
temperature (T
R
) and measure its conductivity (G
TR
).
2. Change the solution temperature T
X
to the value in which the
measurement is going to be made.
3. Turn the meter to manual temperature compensation by disconnecting the
temperature probe.
4. Enter the value of reference temperature T
R
with the keyboard.
5. Measure the conductivity of the solution again. This value will be different
than in T
R
temperature (G
Tx
).
6. Determine the
α
coefficient using the following formula:
α
=
G
TR
- G
TX
G
TR
(T
R
- T
X
)
x 100 (%/
0
C)
where:
T
R -
reference temperature in
0
C
T
x
- changed temperature in
0
C
G
TR
- conductivity at T
R
reference temperature
G
Tx
- conductivity at T
x
temperature
Now, the
αααα
coefficient is determined for the reference temperature T
R
and the measurement temperature T
x
.
In case of measurements at temperatures different than the reference
temperature it is necessary to introduce the calculated
α
coefficient value for
the measurement temperature.
In case when the T
R
reference temperature is equal to 25°C the formula
is:
αααα
=
G
25
- G
Tx
G
25
(25 - T
X
)
x 100 (%/
0
C)
where:
T
x
- value of the changed temperature in
0
C
G
25
- conductivity measured in 25
0
C.
G
Tx
- conductivity measured in temperature T
x