Hanna Instruments HI 2002, Инструкция по эксплуатации, Страница: 38 / 52

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Submerse the ORP electrode approximately 3 cm (1¼”) into the
solution and stir gently. Press
CAL/MODIFY
key when the instrument
is in RELATIVE mV measurement mode. The “CAL” tag will appear and
the Absolute mV is displayed on the primary LCD line and “AbS”
message on the secondary LCD line. The “ ” will be displayed and
“WAIT“ will blink on the third LCD line until the reading is stable.
If the reading is out of range, “WRONG“ will be displayed on the third
LCD line.
When the absolute reading is stable and in measurement range, the
instrument asks for confirmation, the “CFM” tag will blink.
Press GLP/CFM key to confirm calibration. The instrument will display
“0.0“ RelmV on the primary LCD line with “CFM” tag blinking and
“MANUAL“ message on third LCD line. In this moment the relative mV
offset is equal to absolute mV reading.
Use the keys for changing the displayed Relative mV value.
If the calculated offset is higher than ± 2000 mV the “MAX LIMIT
REACHED“ message will scroll on the third LCD line. Until the error is
eliminated the value cannot be confirmed.
OPERA
TIONAL GUIDE