Hanna Instruments HI 2550 - Manual (Page 9)

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• The instrument displays the mV reading on the primary LCD and the
temperature on the secondary LCD line.
• If the reading is out of range, the closest full-scale value will be
displayed blinking on the primary LCD.
RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS
• Press the ALT&MODE keys simultaneously while in mV range. The
“rEL” and “mV” tags are displayed for about one second. After one
second the temperature will be displayed on the secondary LCD and
the “mV” tag will blink.
The reading displayed by the instrument is equal to the difference
between the current mV input value and the relative mV offset established
in the relative mV calibration.
CONDUCTIVITY MEASUREMENTS
CONDUCTIVITY MEASUREMENTS CONDUCTIVITY MEASUREMENTS CONDUCTIVITY MEASUREMENTS CONDUCTIVITY MEASUREMENTS
Connect the conductivity probe to the instrument.
• Press the RANGE key to enter conductivity measurement range (EC).
• Submerse the probe into the solution to be tested. The
sleeve holes must be completely submersed. Tap the
probe repeatedly to remove any air bubbles that may
be trapped inside the sleeve.
• The conductivity value will be displayed on the primary
LCD and the temperature on the secondary LCD.
• If the reading is out of range, the full-scale value (200.0 for MTC/ATC
mode or 500.0 for actual conductivity) will be displayed blinking.
mV
mV
mV