In all automated processes sensors are absolutely necessary to provide the PLC with information. They supply the necessary signals on positions, limits or serve as pulse pick-ups for counting tasks or for monitoring rotational speed. Inductive & Capacitive Proximity Switches are useful in industries for non-contact operation free from any wear & tear with high switching frequencies and accuracy. They are insensitive to vibration, dust & moisture. Inductive Sensors detect all metals without contact. Capacitive Sensors detect almost all solid and liquid media such as metal, glass, wood, plastic, water, oil etc.
Inductive Proximity Switches take advantage of the physical effect of the change in the quality factor in a resonant circuit caused by eddy current losses in conductive materials. This is how it works: ALC tuned circuit generates a high frequency electromagnetic field. This field is radiated from the active face of the oscillator. This reduce the oscillation amplitude. The change is converted into a switching signal. The operating principle permits detection of all metals irrespective of whether they are moving or not. Important: the high frequency field causes no measurable heat in the object nor is there any magnetic interference. The operation of the sensors is without interaction.
The distance to the active face at which an electrically conductive material causes a change of signal in the sensor is called sensing range. The sensing range of an Inductive Proximity Switch is defined by means of a target of mild steel (Fe 360). If the switch is damped by other metals, e.g. aluminium or copper, this is reduced. Using correction factors for every kind of metal the user can calculate the attainable sensing ranges.
|AC Indcutive Proximity Switch
AC M18 MIA-O1208-LWN MIA-O3025-LWN
AC Inductive Proximity Switch - Shiva Make
|Analog Indcutive Proximity Switch
Current Analog m12-10 Current Analog M18
Current Analog M30 Current Analog Q40 M8
|DC High Temperature Indcutive Proximity Switch
High Pressure M12 High Pressure M30
|Long Range DC Indcutive Proximity Switch
Box Type M6.5 M8 M12 M18 M30
DC Inductive Proximity Switch - Shiva Make
|DC Metal Face Indcutive Proximity Switch
METAL FACE M8 WITH CONN. METAL FACE M8
METAL FACE M12 06 METAL FACE M12 METAL FACE M18 METAL FACE M30 METAL FACE M83.5
|DC Ultra - Mini Indcutive Proximity Switch
M4 M5 MID-PO0301-LWN
|Indcutive Proximity Switch
NAMUR 4MM NAMUR 6.5MM NAMUR 12MM NAMUR 18MM NAMUR 30MM NAMUR Q40