Hanna Instruments HI 98188 - Manual (Page 15)

15
Two selectable temparature sources are available: reading directly from the
sensor inside the probe or manual entry.
Three options of compensating temperature are available:
Linear Temperature Compensation: The conductivity of a solution with a
specific electrolyte concentration changes with temperature. The relationship of
the change in conductivity as a function of temperature is described by a
solution’s temperature coefficient. This coefficient varies with each solution and
is user selectable (see Setup mode).
Non Linear Temperature Compensation: for natural water measurements.
The conductivity of natural water shows strong non-linear temperature
behaviour.
A polinomial relationship is used to improve the accuracy of the calculated
results.
Note: Conductivity measurements of natural water can only be performed at
temperature ranging from 0 to 36 °C. Otherwise the “Out T range”
message will be displayed blinking.
No Temperature Compensation (No TC): The temperature shown on the
LCD is not taken into account.
To select the desired option enter Setup menu (see page 35).
If the temperature is out of the -20 °C - 120 °C range the instrument will do
no temperature compensation.
TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION