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mitter HI8936 to the terminals marked IN/
OUT TRANSMITTER paying careful atten-
tion to polarity. Connect the other 2 wires to
the +20V and COMM terminals paying care-
ful attention to polarity.
• The HI 8936 transmitter
may be wall-mounted at
any convenient location
close to the measurement
site. To minimize thermal
drifts due to extreme tem-
perature fluctuations, par-
ticularly if the measure-
ment is conducted outdoors, it is recom-
mended that the transmitter is protected
in a casing.
• For the installation of the HI7635 conduc-
tivity probe, it is necessary to use rubber
seals between the probe and the pipe or
elbow joints. A pipe sealant is also recom-
mended to ensure a leak free joint. When
screwing on the joints, take care not to
overtighten as excessive pressures can
cause the probe to be damaged.
• The conductivity probe HI 7635 is supplied
with a 3m (10') length of cable. The six
INITIAL PREPARATION & INSTALLATION:
Material needed:
• a 3-wire power cable (for connection of
HI 8931/HI 943500 to the mains)
• a PVC insulated 4-core cable
(as con-
nection cable between HI 8931 and HI8936)
• rubber seals and a pipe sealant (for instal-
lation of HI7635)
FOR HI 8931 AND HI 8936 ONLY
• Remove the 4 screws
and the top of the
HI8936 Process Con-
ductivity transmitter.
• Connect the 3-wire
power cable to the 4-
screw terminal strip
according to the volt-
age level as indicated
and pay particular at-
tention to the correct
live, earth and neu-
tral terminal connec-
tions.
• Connect the 2 wires
connected to t h e
4-20 mA and COM
terminals of the 4-
core signal cable from
the conductivity trans-
OPERATIONAL GUIDE
