19
18
tivity controller (see
also page 24).
The 4-core cable has
to be connected to the
transmitter according to
the label instructions on
the 4-terminal strip.
The regulated D.C. supply required for the
proper operation of the transmitter is
"+20V", labeled "+20V" and "COM". The
current (mA) output terminals are labeled
"4-20 mA" and "COM".
The transmitter is protected against inver-
sion of supply voltage.
•
HI8936 used in conjunction with an ex-
ternal power supply
Use 2 PVC insulated
2-core cables.
Connect a +20V DC
power supply directly to
the terminals labeled
"+20V" and "COM", paying careful atten-
tion to polarity (see also page 24) or if
necessary in series with the receiving de-
vice.
The regulated D.C. supply required for the
proper functioning of the circuit is marked
"+20V" and "COM", and the transmitter
current output is indicated "4-20 mA" and
"COM".
The transmitter is protected against inver-
sion of supply voltage.
The power unit should provide a voltage
of +20V ±25%.
Max. current required: 40 mA.
T E R M I N A L B O A R D C O N N E C T I O N S
FOR HI 8936
• Remove the 4 screws and the top cover of
the HI 8936 conductivity transmitter to ob-
tain access to the terminal board connections.
•
HI8936 used in conjunction with HI8931
controller
Use a PVC insulated 4-core cable to con-
nect the transmitter to the HI8931 conduc-