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INSTALLATION & OPERATION MANUAL
SONAC/120 LIQUID LEVEL SWITCH
DECEMBER 2008 REV 1.0
CABLE ASSEMBLIES:
Cable Assemblies, (BLUE ) P/N 23276,77,78 are PVC
Insulated, and are rated for service from -65ºF to +220ºF
(-54ºC to +104ºC).
Cable Assemblies, (WHITE) P/N 23273,74,75 are
TFE Insulated, and are rated for continuous service at
temperatures from -425ºF - 225ºC cryogenic to +400ºF
(204ºC)
CABLE LENGTH:
The maximum permissible cable length varies with the
type of cable used. For PVC insulated cable (BLUE), the
length must not exceed 150 ft. or 45.7M. Blue cable length
over 75ft or 22.8m must have capacitor C1 removed (see
Figure 4). For TFE insulated cable (WHITE), the length
must not exceed 100ft. or 30.5M. White cable length
over 50ft or 15.2m must have capacitor C1 removed
(see gure 4). If a eld splice must be made, use ONLY
splicing techniques approved for shield cables.
CONTROL UNIT:
The electronic control unit was designed for eld mounting
in wet, corrosive environments. Good installation practice is
to mount the unit in an accessible location, as free as possible
from vibration, temperature extremes, and corrosive vapors,
where it is protected from mechanical damage and accessible
for calibration and service. In wet service areas, to prevent
moisture accumulation in the enclosure, conduits should enter
the enclosure from below.
Figure 4
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