|
6
MN301460 Rev A
Technology (continued)
Step Four
ULTRASONIC SWITCH (AU18-113 _ & AU18-213 _ SERIES)
The Ultrasonic level switch generates a 1.5 MHz ultrasonic wave from a miniature piezoelectric transducer
located on one side of the gap within its sensing tip. Another piezo transducer, located on the other side of the
gap, acts as a microphone, picking up the sound wave. When liquid enters the gap, there is a change in the
speed the wave crosses the gap. This change in the speed of sound identifies whether the sensor is in liquid or
in air.
Tuning Fork NPT Version
Tuning Fork G Version
The sensor should be installed so that the liquid will drip out of the gap when the sensor becomes
dry.
LU10 SPECIFICATIONS
Sensor material:
1_ _5: PP
2_ _5: PFA
Cable jacket mat’l:
1_ _5: PP
2_ _5: PFA
CONFIGURATIONS
Part
Number
Length
Material
(body)
Material
(cable)
Threads
cable
side
X
sensor
side
LU10-1405
Long (4.5”)
Polypropylene Polypropylene
(¾” NPT) x (¾” NPT)
LU10-1425
(¾” R) x (¾” G)
LU10-2405
PFA PFA
(¾” NPT) x (¾” NPT)
LU10-2425
(¾” R) x (¾” G)