Hanna Instruments HI 2550, Инструкция по эксплуатации, Страница: 20 / 64

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Select the desired value with the ARROW keys, if necessary.
When the reading is stable, “ CFM ” tag starts blinking on the LCD, asking
for confirmation.
Press CFM to confirm calibration.
The instrument stores the calibration value and returns
to measurement mode.
Notes:
•
If the reading is too far from the expected value, the
“ WRONG ” and “ ” tags will blink. Calibration can not be confirmed.
In this case check if the calibration solution has been used or clean
the probe by following the Cleaning Procedure (see page 53).
• If the meter is in ATC or MTC mode and the buffer
temperature is out of the 0.0 °C to 60.0 ºC interval, “ WRONG ”
“ ºC ” tags and the temperature will blink.
• For best results choose an EC buffer value close to the
sample to be measured.
•
In order to minimize any EMC interference, use plastic or
glass beakers.
•
It is possible to set the cell constant value directly, without
following the calibration procedure. To set the cell constant, enter
SETUP mode and select “
CELL ” (see SETUP for details, page 36).