Hanna Instruments HI 4521 User Manual
Page 12
12
POWER CONNECTION
Plug the 12 VDC adapter into the power supply socket.
Note: These instruments use non volatile memory to retain the meter settings, even when unplugged.
ELECTRODE AND PROBE CONNECTIONS
For pH or ORP measurements connect a pH / ORP electrode with internal reference to the BNC connector
located on the rear panel of the instrument.
For ISE measurements (
HI 4522) connect, an ISE electrode with internal reference to the BNC connector
located on the rear panel of the instrument.
For electrodes with a separate reference connect the electrode’s BNC to the BNC connector and the electrode’s
reference to the reference input socket.
For temperature measurements and automatic temperature compensation connect the temperature probe to the
appropriate socket (mV channel only).
For conductivity, resistivity, TDS or salinity measurements connect a conductivity probe to the DIN connector
located on the rear panel of the instrument.
INSTRUMENT START UP
• Turn the instrument on from the power switch located on the rear panel of the instrument.
• Please wait until the instrument finishes the initialization process.
Note: It is normal for the loading process to take a few seconds. If the instrument doesn’t display the next
screen, restart the meter using the power switch. If the problem persists, contact your dealer.
O P E R A T I O N A L G U I D E
O P E R A T I O N A L G U I D E
O P E R A T I O N A L G U I D E
O P E R A T I O N A L G U I D E
O P E R A T I O N A L G U I D E
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T R O U B L E S H O O T I N G G U I D E
T R O U B L E S H O O T I N G G U I D E
T R O U B L E S H O O T I N G G U I D E
T R O U B L E S H O O T I N G G U I D E
T R O U B L E S H O O T I N G G U I D E
CONDUCTIVITY / RESISTIVITY / TDS / SALINITY CHANNEL