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PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it care-
fully to make sure that no damage has occurred during shipping. If there
is any noticeable damage, notify your dealer.
Each model is supplied complete with:
• Mounting brackets (not for HI 8936 series)
• Transparent splsh-proof cover (not for HI 8936 series)
• Instruction manual
Note: : : : :
Save all packing materials until you are sure that the instru-
ment functions correctly. All defective items must be returned
in the original packing materials together with the supplied
accessories.
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
HI 8931 is a panel-mounted conductivity controller designed for sim-
plicity of use in a wide range of industrial process applications.
The instruments are designed with a standard DIN panel mount with
membrane keypads and large LCD with backlight on the front, and pro-
vide a series of auto-diagnostic functions.
Probes, power supply, contacts and recorders are connected on the rear
panel through screw terminals.
Using HI 8931 in conjunction with a 4-20 mA output transmitter
(HI 8936 or HI 8936L series) will assure you of a strong, interference-
free signal at distances up to 300 meters (1000').
For in-line applications use the HI 7635 probe, while for tanks the
HI 7638 with external threads is recommended. These probes are pro-
vided with built-in NTC sensor for temperature compensated conductivity
measurements. The probe cable length is 3 meters (10').
HI 8931 also features a direct connection up to 20 m (67'), without
intermediate amplifiers, to the conductivity probe HI 7638 with DIN con-
nector and automatic temperature compensation.
3
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