Hanna Instruments HI 98360 - Manual (Page 10)

10
T E M P E R A T U R E C O M P E N S A T I O N T E M P E R A T U R E C O M P E N S A T I O N T E M P E R A T U R E C O M P E N S A T I O N T E M P E R A T U R E C O M P E N S A T I O N T E M P E R A T U R E C O M P E N S A T I O N
A AA AA u t o E n d u t o E n d u t o E n d u t o E n d u t o E n d
To freeze the first stable reading on the LCD
press
AutoEnd while the instrument is in
measurement mode.
The ” HOLD” tag will be displayed blinking on
the LCD until the reading is stabilized.
When the reading is stable, the “ HOLD” tag
stops blinking and the reading is frozen on
the LCD.
Press AutoEnd again to return to normal measurement mode.
Note: • Pressing Range the instrument will skip to the displayed
range, without leaving AutoEnd mode. The Log key also
holds AutoEnd mode.
• Pressing 2nd then Setup, GLP or RCL, the instrument
leaves AutoEnd mode and performs the selected function.
The EC reading is affected by temperature and changes in ion concentration.
To measure only one variable, conductivity measurements are normally
compensated to a fixed temperature. This reference temperature is
configured in SETUP parameter rEF. See page 18.
Three options of temperature compensation are available:
Automatic (Atc): The probe has a built-in temperature sensor; the
value of the temperature is used to automatically compensate the EC/TDS
measurement to a reference temperature. This is the default option.
Manual (Mtc): The temperature value, shown on the lower LCD, can be
manually set by the user with the up and down arrow keys to the
solution temperature. The “
ºC” or “ºF” symbol blinks when this option is
active. The instrument compensates the conductivity measured at this
temperature to the reference temperature.
No Compensation (NoTC): The temperature reading shown on the
lower LCD is not taken into account. The reading displayed on the upper
LCD is the absolute EC or TDS value without temperature compensation
applied. The measurement changes due to temperature and ion
concentration. The second “
ºC” or “ºF” symbol blinks when this option is
active.