Operation
Cond 1970i
28
ba75692e02
07/2009
4.4
Setting the temperature compensation TC
The calculation of the temperature compensation is based on the pre-
set reference temperature, 20 °C or 25 °C. It appears on the display as
Tref20
or
Tref25
. To switch over the reference temperature, see
section 4.7 C
ONFIGURATION
.
You can select one of the following temperature compensation meth-
ods:
z
Nonlinear temperature compensation (
nLF
)
according to EN 27 888
z
Linear temperature compensation (
Lin
)
with selectable coefficients of 0.001 ... 3.000 %
/
K
z
No temperature compensation (- - - -)
Adjusted
temperature
compensation
Each time the instrument is switched on, the adjusted cell constant and
temperature compensation are shown on the display for a short time
(see section 4.1 S
WITCHING
ON
THE
MEASURING
INSTRUMENT
). In order to
view the data, switch the measuring instrument off and switch it on
again.
Note
ips
Select the following temperature compensations given in the table ac-
cording to the respective test sample:
Application tips
Sample
Temperature compensation
Display
indicator
Natural water (ground
water, surface water
and drinking water)
nLF
according to DIN 38404
EN 27 888
nLF
Ultrapure water
nLF
according to DIN 38404
EN 27 888
nLF
Other aqueous solu-
tions
Set linear
temperature coefficient
0.001 ... 3.000 %/K
Lin
Salinity
(seawater)
Automatically nLF according
to IOT
Sal, nLF
