Switching On The Device; Measuring The Conductivity - JUMO 202710/30 Operating Manual

5 Measuring
5.2

Switching on the device

NOTE!
The device is preconfigured per default for measuring the conductivity
with automatic selection of the measuring range (Auto Range).
Briefly press the
If a correction of the relative cell constant (see chapter 7.2, page 33) has been
performed, the device accordingly provides a brief display of "
set relative cell constant after the segment test.
If a zero point correction (offset) or slope correction has been performed on
the temperature sensor (see chapter 7.1, page 33), the device accordingly pro-
vides a brief display of "
The device is subsequently ready to commence measuring.
5.3

Measuring the conductivity

Definition
Conductivity
current.
In aqueous solutions (electrolytes), the current flows through the charge trans-
port of the ions dissolved in the electrolyte. The conductivity measurement is
therefore excellently suited to determining the concentration of saline solu-
tions, acids, and lyes.
The conductivity is the reciprocal of the specific electrical resistivity and is
stated by the device in µS/cm or mS/cm.
Select the measurand
The device is preconfigured per default for measuring the conductivity
with automatic selection of the measuring range (Auto Range).
If the device has been configured for a different measurand in a user-
defined operation, first change the measurand (see "Parameter "InP":
selection of a measurand", page 21).
If the measuring range is selected automatically, the measuring range with the
best dissolution is always selected from the measuring ranges listed.
1
Specifically relates to electrical conductivity here
14
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key.
The device activates all display segments
for a short time (segment test).
" after the segment test.
1
is the ability of a material or an electrolyte to conduct electric
" and the