INSTALLATION & OPERATION MANUAL
SONAC/120 LIQUID LEVEL SWITCH
DECEMBER 2008 REV 1.0
5
SENSORS:
Basic installation dimensions for sensors are shown in figure
(1). Figure (2) shows a “Y” connection, figure (3) shows an
installation using conduit.
Mounting the sensor in the horizontal position is recommended.
If sensor must be mounted vertically (from top of tank or bin),
install the sensor at an angle (30º) to prevent entrapment
of air bubbles on the sensor face, which may cause false
responses.
1.9844
(50.4)
.875
(22.22)
1.50
(38.1)
2.500
(63.5)
Lanish, Tri-Clover
Tri-Clamp Type
16 amp (34) 1.5”
(38.1) pipe size
FIGURE 1
1-11 1/2 NPT
(25.4)
Stainless Steel
Sensor
625
(15.9)
1.3125
(33.3)
Cable Connector
.5625
(14.3)
Single Sensor, Sanitary Ladish Fitting
(USDA Approved for AAA Sanitary Service)
.5312
(13.5)
1.375
(35)
.875
(38.1)
1.50
(38.1)
1 NPT
(25.4)
Hermetic Connetor
1.93
(49)
2.50
(63.5)
Single Sensor, Standard Hex Fitting
Verical Instal-
lation
1 NPT Fitting
(25.4)
Tank Wall
Installation for small
vessels or pipes.
1 NPT Fitting
(25.4)
Installation Suggestion
Sensor with
Conduit Attachment
Install sensor so sensor face is at least four inches away from
non-liquid surfaces, for pipe mounting, use “Y” connection.
Install the sensor so that the rear of the sensor, where the
cable attaches, is kept dry.
FIGURE 2
FIGURE 3
