LWT-110
Operation | 8
B-H87.0.02.DB214-1.0
21 / 26
Gradient correction for the conductivity value
T.SL
1.000
No gradient correction
0.800 .. 1.200
Multiplier for the gradient correction
Formula
Zero point correction:
Displayed value = measured value –
T.OF
Gradient correction °C:
Display = (measured value –
T.OF
) * (1 +
T.SL
/ 100)
Gradient correction °F:
Display = (measured value – 32 °F –
T.OF
) * (1 +
T.SL
/ 100) + 32 °F
Gradient correction γ:
Display = measured value /
T.SL
Example calculation
Temperature
– Zero point correction
T.OF
to
0.00
– Gradient correction
T.SL
to
0.00
– Display unit
UNIT
to °C
– Display in ice water -0.2 °C
– Display in ice water setpoint
T.OF
= 0.0 °C
– Display in water bath 36.6 °C
– Display in water bath setpoint
T.SL
= 37.0 °C
–
T.OF
= display zero point correction – setpoint zero point
–
T.OF
= -0.2 °C – 0.0 °C = -0.2 °C
–
T.SL
= (setpoint gradient correction / (display gradient correction –
T.OF
) – 1) *100
–
T.SL
= (37.0 °C / (36.6 °C – (-0.2)) -1) *100 = 0.54
Conductivity
– Gradient correction
S(L
to
1.000
– Temperature compensation
TCORR
to
OFF
– Control solution GKL 101 as reference
– Display in GKL 101 at 25 °C, setpoint = 84 µS/cm
– Display = 82.5 µS/cm
–
S(L
= setpoint / display value
–
S(L
= 84 µS/cm / 82.5 µS/cm = 1.018
NOTE
The most precise results can be achieved when the control solution temperature is ad-
justed to 25 °C. With different temperatures, the table value of the corresponding tem-
perature must be used as a setpoint.
Outcome of an action
The changed value is saved and the
Configuration
menu is closed.
NOTE
If the product is switched off without saving the configuration, the last save value is re-
produced on the next start-up of the product.
