3
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
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.
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.
