ProMinent DULCOTEST PAA 1-mA-200 ppm Operating Instructions Manual page 36

Installation
Electrically connecting
the measuring cell
Electrically connecting
the measuring cell
36
• The power supply for the measuring cell may not fall below
16V DC, even for a short period! The power source must be
capable of bearing a minimum of 35 mA at a minimum of
16V DC. A power supply that is too low causes errors in
measured values and can lead to dangerous over metering!
• The measuring cell is not electrically isolated. In order to
avoid any disruptive compensating current, the external
equipment and any other clients connected to the power
supply must be electrically isolated.
Observe the following when connecting to external equipment:
Power source: 16-24 V DC, min 35 mA at 16 V DC
Max load: 1.0 W
IMPORTANT
When electrically connecting the measuring cell to the measur-
ing equipment, only use signal cables with a diameter of 4 mm
(see section 15, ordering information).
Turn the upper section of the measuring cell anti-clockwise
through 90
Strip the outer insulation back by about 5cm so that both con-
nectors are visible.
Loosen the M-12 connection and feed the 2-connector cable
through it. Whilst doing this, keep the two-connector signal cable
in the measuring cell (5 cm).
Strip the insulation from both ends of the cable and make a clear
connection with the terminal, as shown in fig. 4 (use the screw-
driver provided). 1 = plus, 2 = minus (see fig. 4).
Tighten the M-12 connection.
Turn the upper section of the measuring cell clockwise firmly as
far as the stop.
Fig. 4
o
and remove.
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