Xylem Cond 1970i - Manual (Page 28)

Operation Cond 1970i
28 ba75692e01 01/2007
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