Hanna Instruments HI 2300 - Manual (Page 8)

8
The conductivity reading is affected by temperature.
Three options for temperature compensation are available in conductivity
measurement mode.
Note: The compensation is referenced at the selected reference temperature
(see SETUP for details, page 21).
To select the desired option, press the
ALT&ATC keys until the option is displayed
on the LCD.
Automatic (Atc): The conductivity probe has a built-in temperature
sensor; the temperature value is used to automatically compensate the
EC/TDS reading.
Manual (Mtc): The temperature value, shown on the secondary LCD,
can be manually set with the
ARROW keys. The “ºC” tag blinks when
this option is active. This value will be used to compensate the ECT/TDS
reading.
No Compensation (notc): The temperature value is displayed, but not
taken into account. When this option is selected the “
ºC” tag will blink
with slower frequency. The reading displayed on the primary LCD is the
uncompensated EC or TDS value.
Notes: • The default compensation mode is Atc.
• If no temperature probe is detected, Atc mode can not be selected
and the instrument displays “ ----” on the secondary LCD.
If temperature compensation is selected, measurements are compensated
using the temperature coefficient (default value 1.90 %/ºC). To change
the temperature coefficient, enter the setup mode and select “
tc” (see
SETUP for details, page 21). The current temperature coefficient can be
quickly viewed by pressing the
ALT&TC keys in Atc and Mtc modes. The
value is briefly displayed on the secondary LCD.
• If the temperature reading exceeds the limits of the meter (–20.0 ºC
to 120.0 ºC), the “ ºC” tag will blink and the closest full-scale value
will be displayed.
TDS MEASUREMENTS
Press the RANGE keys while in EC range. The instrument will switch to
TDS measuring range. The TDS reading will be displayed on the primary
LCD and the temperature reading on the secondary LCD.