Temperature Compensation; Nlf Temperature Compensation According To En 27888 - VWR HCO304 Operating Manual

HCO304 Bases for measurement | 6
regularly. Special testing and calibration solutions, such as GKL 100, 101 and 102 are
available for this purpose. In normal application conditions, semi-annual testing is re-
commended; Adjustment of the measuring input [} p. 20]. A system test by the man-
ufacturer is recommended in case of doubt; Calibration and adjustment service.
For this purpose, also refer to
2 Adjustment of the measuring input [} 20]

6.6 Temperature compensation

The conductivity of aqueous solutions is temperature-dependent. The temperature de-
pendency varies greatly according to the type of solution. With temperature compens-
ation, the solution is calculated back to a uniform temperature in order to compare it
independently of the temperature. The normal operating temperature for this is 25 °C.

6.6.1 NLF temperature compensation according to EN 27888

For most applications, such as fish husbandry applications and measurement of sur-
face water and drinking water, non-linear temperature compensation for natural water
NLF is sufficiently accurate in accordance with EN 27888. The normal operating tem-
perature is 25 °C. The recommended application range of NLF compensation is
between 60 µS/cm and 1000 µS/cm.
B-H87.0.01.DB201-1.0 15 / 29