Hanna Instruments HI 2550 - Manual (Page 4)

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1) Liquid Crystal Display (LCD).
2) CAL key, to enter and exit calibration mode.
RCL key (alternate function), to enter and exit memory recall.
3) CFM/GLP key, to confirm calibration selection, different setup values
or to display Good Laboratory Practice information.
4) ºC key, to manually increase temperature value or other parameters.
TC key (alternate function), to view temperature coefficient value.
5) ºC key, to manually decrease temperature value or other parameters.
ATC key (alternate function), to select EC temperature compensation mode.
6) SETUP key, to enter/exit SETUP mode.
LOCK key (alternate function), to freeze current EC range on the LCD.
7) RANGE key, to select measurement range (pH, mV, EC), switch to
focused data in SETUP or toggle between buffer value and temperature
during calibration.
MODE key (alternate function) to select mV or Rel mV on mV range
or EC, TDS, NaCl on EC range.
8) LOG/CLR key, to store a value into memory, to clear pH calibration,
or to select to delete log records or lots.
9) ALT key, to select alternate function.
10) ON/OFF switch.
11) Power supply socket.
12) USB connector.
13) EC electrode connector.
14) BNC electrode connector.
15) Temperature probe socket.
16) Electrode reference socket.
FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION
Front Panel
Rear Panel