4
1) Left Keyboard
2)
ON
switch
3)
OFF
switch
4) Right Keyboard
5) Pin input socket
6) BNC electrode connector
7) Temperature probe socket
8) Power adapter socket
9) RS232 serial communication connector
F U N C T I O N A L D E S C R I P T I O N
HI 120
NUM
Reso
RelmV
mV
pH
AutoLOG
SET
GLP
AutoHOLD
ON
OFF
Front Panel
Rear Panel
1
2
3
4
Primary LCD
Secondary LCD
Electrode Condition
5
6
7
8
9
Electrode Response
RS232
POWER
TEMP
pH/ORP
PIN
Calibration Check
RCL
LOG
MODE
CLR
CFM
CAL
pH / mV Meter
HI 120