3
2£
2
PRELIMINARY EXAMINATION
Remove the instrument from the packing
material and examine it carefully to make
sure that no damage has occurred during
shipping. If there is any noticeable damage,
immediately notify your dealer.
Each model is supplied complete with
transparent splash-proof front cover, mounting
brackets and instruction manual
Note: Save all packing materials until you
are sure that the instrument functions
correctly. All defective items must be
returned in the original packing materials
together with the supplied accessories.
GENERAL DESCRIPTION
HI 8510 and HI8512 pH and ORP panel-
mounted indicators, and HI 8710, HI 8711
and HI 8720 pH and ORP controllers, are
ideal for process control monitoring in a wide
range of industrial applications.
These instruments have been designed for
easy and fast installation, and are provided
with membrane keypads on the front panel,
large display and autodiagnostic functions.
All connections are made through screw ter-
minals on the rear panel.
Two versions are available for each model, to
accept either a direct input from a pH or ORP
electrode (E version) or from a transmitter
through 4-20mA input (T version).
Moreover, you can choose the output
configuration for connecting a recorder or a
PLC, between 0-20 or 4-20 mA.
DearCustomer,
ThankyouforchoosingaHANNAinstruments®
product.
Please read this instruction manual carefully
beforeusingtheinstrument.
If you need additional technical information,
do not hesitate to e-mail us at
These instruments are in compliance with the
directives.
PreliminaryExamination ............................. 3
GeneralDescription..................................... 3
AvailableModels ......................................... 4
MechanicalDimensions .............................. 6
FunctionalDescription HI8510.................... 7
FunctionalDescription HI8512.................. 10
FunctionalDescription HI8710.................. 13
FunctionalDescription HI8711 .................. 16
FunctionalDescription HI8720.................. 20
Specifications............................................ 24
InitialPreparation ...................................... 27
OperationalGuide ..................................... 30
pHCalibration ........................................... 34
pHValuesat VariousTemperature............. 36
pH Diagnostic Tests .................................. 37
ORP Diagnostic Tests............................... 39
LEDIndication........................................... 40
TakingRedox Measurements .................... 41
ElectrodeMaintenance.............................. 43
SuggestedInstallations ............................. 47
Accessories.............................................. 49
Warranty ................................................... 55
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