Tabla de contenido
Publicidad
Idiomas disponibles
Idiomas disponibles
METRIA M51 Benchtop Conductivity/TDS Meter
Addendum 2: How to calculate the temperature coefficient
To determine the temperature coefficient of sample solution use the formula below:
C
-C
TB
TA
T
=
c
C
(T
-25)-C
(T
TA
B
TB
Where:
T
= Temperature coefficient
C
C
= Conductivity at Temperature A
TA
C
= Conductivity at Temperature B
TB
T
= Temperature A
A
T
= Temperature B
B
1.
Press and hold the
o
C
Press the or key to set the temperature to 25 °C.
2.
3.
Place the electrode into the sample solution A and record the temperature value T
4.
Condition the sample solution and electrode to a temperature that is about 5 °C to 10 °C different from T
value T
and conductivity value C
B
5.
Calculate the temperature coefficient according to the formula above.
Addendum 3: How to calculate the TDS conversion factor
To determine the TDS conversion factor use the formula below:
Actual TDS
Factor =
Actual Conductivity @ 25°C
Where:
Actual TDS: value from the high purity water and precisely weighed NaCl or KCL reagent.
Actual Conductivity: the meter measured conductivity value.
For example: dissolve 64g of potassium chloride reagent in 1 litre distilled water. If its conductivity value is 100mS/cm, then TDS conversion
factor is 0.64.
×100%
-25)
A
key for 3 seconds to enter the temperature setting.
.
TB
and conductivity value C
A
TA
. Record the temperature
A
15
.
Publicidad
Tabla de contenido
