ATI
Q45C2 2E Conductivity System
Part 4 – Configuration
O & M Manual
Revision K (01/07)
- 17 -
Take care to route sensor cable away from AC power lines, adjustable frequency
drives, motors, or other noisy electrical signal lines. Do not run signal lines in the
same conduit as AC power lines. Run signal cable in dedicated metal conduit if
possible. For optimum electrical noise protection, run an earth ground wire to the
ground terminal in the transmitter
Refer to Figure 3-1, Cable Description and Figure 3-2, Wiring Diagram for
illustrative details on electrical installation.
Figure 3-1 Cable Description, Model Q25C2
Only ATI’s custom 6-wire shielded interconnect cable must be used when
connecting the Model Q25C2 sensor to the analyzer. This high-performance,
double shielded, polyethylene jacketed cable is specially designed to provide the
proper signal shielding for the sensor used in this system. No substitutions can
be made. Substituted cables may cause problems with system performance.
3.2 Two-Wire
In the two-wire configuration, a separate DC power supply must be used to
power the instrument. The exact connection of this power supply is dependent
on the control system into which the instrument will connect. See Figure 3-2 for
further details. Any twisted pair shielded cable can be used for connection of the
instrument to the power supply. Route signal cable away from AC power lines,
adjustable frequency drives, motors, or other noisy electrical signal lines. Do not
run sensor or signal cables in conduit that contains AC power lines or motor
leads.
