Dot-x SERIES Spezifikationen Seite 20

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DOTX-45 Dissolved Oxygen System Part 5 Sensor Assembly
DOTX-45 19 -
For example, if the power supply voltage is 24 VDC, first subtract 16 VDC, then
divide the remainder by .02. 8/.02 = 400; therefore, a 400 Ohm maximum load
can be inserted into the loop with a 24 VDC power supply.
Similarly, the following values can be calculated:
4.3 115 VAC w/Relays
In the 115 VAC configuration, a DC power supply is mounted into the inside rear
of the enclosure. The power supply must be ordered with the proper operating
voltage. Verify that the unit requires 115 VAC before installing. Also verify that
power is fully disconnected before attempting to wire.
AC powered systems are supplied with 3 cable gland fittings and two ½” conduit
adapters. One of the cable glands has a larger hole in the rubber gland and
should be used for the power cord entry if a flexible power cord will be used for
installation. One of the cable glands with the smaller gland opening should
normally be used for the sensor cable. Cable glands and conduit hubs will screw
into any of the three threaded holes on the bottom of the enclosure.
Connect HOT, NEUTRAL, and GROUND to the matching designations on
terminal strip TB5.
(Power Supply Voltage
-
16)
.02
= R
MAX
Power Supply Voltage (VDC)
Total Load (Ohms)
16.0 0
20.0 200
24.0 400
30.0 700
35.0 950
Disconnect line power voltage BEFORE connecting
line power wires to Terminal TB5 of the power supply.
The power supply accepts only standard three-
wire
single phase power. The power supply is configured
for 115 VAC or 230 VAC operation at the f
actory at
time of order, and the power supply is labeled as
such. Do NOT connect voltages other than the
labeled requirement to the input.
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