Hanna Instruments HI 255 User Manual

4
1) Liquid Crystal Display (LCD).
2) CFM/GLP key, to confirm different values or to display Good Laboratory
Practice information.
3) CAL key, to enter and exit/escape calibration mode.
4) key, to manually decrease temperature value or other parameters.
ATC key (alternate function), to select EC temperature compensation mode.
5) key, to manually increase temperature value or other parameters.
TC key (alternate function), to view the temperature coefficient value.
6) LOG key, to store measured data.
RCL key (alternate function), to enter/exit recall mode.
7) ALT key, to select alternate key function.
8) LOCK/CLR key, to freeze current EC range on the LCD or to clear pH
calibration parameters.
SET key (alternate function), to enter/exit setup mode.
9) RANGE key, to switch measurement unit pH/mV/EC or focused data.
MODE key (alternate function), to select measurement mode/pH resolution.
10) ON/OFF switch.
11) Power supply socket.
12) Conductivity socket.
13) BNC electrode connector.
14) Electrode reference socket.
15) Temperature probe socket.
16) RS232 serial communication connector.
FUNCTIONAL DESCRIPTION
Front Panel
Primary LCD
Secondary LCD
1
9
3
2
7
4
6
5
10
8
11
13 14 15
Rear Panel
16
POWER
12VDC
INPUT TEMP
RS232
PROBE
12
ALT FunctionsFunctions
RCL
LOG
ALT
SET
LOCK/CLR
ATC
TC
MODE
RANGE
GLP
CFM
CAL
pH/mV & EC/TDS/NaCl
HI 255 Combined Meter
TC Factor
TC
ATC
Select Temperature
Compensation
Recall Log Data
RCL
SET
Set Parameters
Select Measure Mode
MODE
Confirm/GLP Data
CFM/GLP
Calibration
CAL
Change Parameter Value
Store Log Data
LOG
Lock Current Range
Clear Calibration
LOCK/CLR
Select Measure Unit
Scroll Log Data
RANGE
REF
/
BUFFER pH
INTVDATETIME%
ppm
S
3
2
1
BUF
WRONG
READY
CFM
NaCl
pHmVg / lLOGCAL

Hanna Instruments HI 255 Specifications

General

Brand	Hanna Instruments
Model	HI 255
Category	Measuring Instruments
Language	English