User Guide

12
• Power Supply: Connect a 3-wire power
cable to the terminal strip, while paying
attention to the correct line (L), earth (PE)
and neutral (N) terminal connections.
Power: 230VAC - 50 mA.
Line Contact: 200mA fuse inside.
PE leakage current 1 mA; this contact must be con-
nected to ground.
• Conductivity input: the default input is from conductivity
probe. Connect the EC probe to the terminals #10 on
page 8. HI7639D is a conductivity probe with built-in tem-
perature sensor.
• Pt 100 Terminals (to be used only if the EC probe is
without Pt 100): connect to these contacts (#3 on page 8)
the Pt 100 temperature sensor for automatic temperature
compensation of measurement. Follow the below diagram
for connecting a 3-wire Pt 100 sensor as HI5001/5:
Color Pin #
GRAY 8
BROWN 9
YELLOW 10
If using a different Pt 100, separated from the conductivity
probe, connect the cable shield to pin 11, and the other
wires as explained below.
In the case of a 2-wire sensor connect
the Pt 100 to pins 8 and 10, and short
pins 9 and 10 with a jumper wire.