Capacitive sensors
Touch sensor –
button for finger
DC
Prewired or quick disconnect
Top five product features!
A reliable alternative to mechanical and optical touch sensors using
• dynamic
and static sensing principles
• Sensor is actuated with a light touch of a single finger
• Housing is resistant to impact and wear, rated IP69K for water ingress
• Dynamic sensing principle ignores build-up on sensing face
• M22 x 1.5 threads allows direct mounting in many areas
Cylindrical capacitive touch sensitive sensors for
machine start / stop with light finger touch
NEW! The KT Series capacitive touch sensors are used for starting and stopping machinery,
assembly lines and processes. When compared to mechanical pushbuttons, the KT Series sensors offer
many advantages. Utilizing the capacitive principle, the KT Series sensors are electronic sensors with no
moving parts to wear out. The completely sealed device is rated IP69K, prevents oil ingress and ignores
build-up on the sensing face. KT Series sensors use roughly half the space of mechanical pushbuttons
freeing up valuable space behind panels. Robust plastic and stainless steel housings are available.
Dynamic and static capacitive sensing principles for reliable operation
ifm offers two types of devices for start / stop control. KT touch sensors utilizing the dynamic capacitive
principle detect a hand or finger for actuation. The output signal is actuated for 300 mS. This principle
allows the sensor to ignore build up on the sensing face and suppress interference such as water, layers
of ice, or particles that can stick to the sensor face. Even if the operator is wearing a glove, the sensor
will trigger. Static touch sensors detect hands and objects for as long as the sensing face is damped.
Static touch sensors also work through glass.
Versatile and simple mounting
The KT Series capacitive touch sensors have a M22 thread along the entire length of the housing. Simply
screw the sensor into a M22 tapped hole until it bottoms out. There is no need to worry about the alignment of the sensing face as the symbol disc is snapped in place after mounting. KT Series capacitive
touch sensors may also be mounted in thru holes 22.5 mm or larger by using the supplied lock nut.
Technical Specs
Operating voltage:
Supply current:
Current rating:
Output:
Operating temperature:
Protection:
24 (12…30) V DC
30 mA
500 mA
PNP, N.O.
-104...185 °F (-40...85 °C)
IP65, IP67, IP69K
Mechanical machine start/stop buttons are
susceptible to wear and tear. ifm’s cylindrical
touch sensitive sensors operate without
wear because they react to light contact
for actuation and therefore provide a long
life-in-application.