Magnetic switches and accessories

			Magnetic switches and accessories

	Extract from catalogue - magnetic switches (5.8Mb)

UNIVERSAL SENSOR ... "ONE FOR ALL"

During a design of pneumatic circuit, technicians use many actuators with different size, stroke and shape. Therefore, often there is the need to choose a specific magnetic sensor for each cylinder and this lead to an increasing effort to manage them in their stock. The universal sensor SMT.. is suitable on each AIRON's actuator .....(and not only AIRON's actuator).

HARSH WORK ENVIRONMENT SENSOR

Sensor range gives the right answer to any customer need in the pneumatic automation field.
"SMT" series sensor can be used on any AIRON actuators because they can be inserted in the standard T grooves and have been designed many brackets and bands to fit on tie rods and profiled barrel.
Following pictures clearly show the whole and complete use of that sensor on any tube or barrel.
For harsh work environment use, like frequent washing at high temperature and pressure, has been developed a specific sensor.

			How to choose sensors

The magnetic switch is an electronic device which reveals the presence of a magnetic field.
Placed on magnetic cylinder it is mostly used as a proximity switch to open or to close an electric circuit.
AIRON proposes for its cylinder two kind of switches: Reed switch (electromechanical device) or Hall effect switch (electronic device).
Reed switch is avaiable with two or three leads circuit, allowing the second one the connection of more switches. This is due to the self electrical supplì of the led.
The electronic switch hasn’t mechanical devices therefore it gives the following advantages:
- longer life (10⁹ cycles compared to 10⁷ of the Reed version);
- lower switching time;
- lower hysteresis;
- longer cables can be used (because the capacitive effect is lower).
The switches are fastened with related brackets properly shaped.
The use of protection device SMT.2PRO is suggested for Reed switches with 5m longer cable.
For harsh work environment (food, chemical etc. industries) AIRON proposes the SM6T.. switch.

			Order codes

	S	M	T	.	3	C	V



1					2	3	4

1	Magnetic switch type

SMT..	Universal sensor

SM6T ...	Harsh work environment sensor

SMP ...	Sensors of great dimensions


2	Magnetic switch circuit type

2	Circuit with Reed switch normally open
Protected by a varistor against overvoltage caused when switching off, with indicator. Recommended circuit for most applications.


3	Circuit with Reed switch normally open
Indicator supplied by a third lead (black). Suitable for supplyng several switches in series as it eliminates the volage drop.


E	3 wires electronic circuit normally opened PNP outlet protected against short circuit

E2	2 wires electronic circuit normally opened protected against short circuit

EN	3 wires electronic circuit normally opened NPN outlet protected against short circuit


3	Version

C	With switch connector - see technical features

D	With direct standard lenght connector - see technical features


4	Cable lenght

...	For different cable lenght add to code the desidered lenght expressed in metres followed by letter "M".

SMT.3C; SMT.3D; SMT.2C; SMT.2D; SMT.EC; SMT.ED; SMT.E2; SM6T.3; SM6T.2; SM6T.E; SMG.3C; SMG.3D; SMG.2C; SMG.2D; SMG.EC; SMG.ED; SMG.E2; SMP.3C; SMP.3D; SMP.2C; SMP.2D; SMP.EC; SMP.ED; SMP.E2; SMT.2PR; TS-2;