Description

PRFA Series Cable Type Splash Resistant Cylindricalproximity switch

Featuring an all-metal housing and made of 303 stainless steelproximity switchhead. Rugged proximity switches are highly resistant to deformation and corrosion and can be used in a variety of environments, including food and beverage manufacturing, chemical, and metalworking industries. The spatter-proof proximity switches are PTFE-coated to reduce the risk of failure due to welding spatter. The 0.8mm thick metal sensor head provides high impact and wear resistance, and the 360° ring-shaped operation indicator allows users to quickly identify the operation status from all angles. The proximity switches are available in Ø 8 mm, Ø 12 mm, Ø 18 mm and Ø 30 mm for easy installation in tight spaces and various other user settings.

main feature

High resistance to shock and abrasion caused by contact with workpiece or wire brush (sensor head/housing: stainless steel)
Reduce the risk of failure caused by aluminum shavings
PTFE coating prevents failures due to weld spatter (spatter proof models)
Excellent noise immunity with dedicated sensor IC
Built-in surge protection circuit and overcurrent protection circuit
360° ring operation indicator (red LED) (except PRFAT08-1.5DO-V model)
Oil resistant cable
IP67 protection structure (IEC standard)
Full metal housing
Thick sensor head
Running lights
Prevent malfunction due to splash
Strong against shock and wear
Various protection circuits
Protection class

Available in a variety of sizes

The proximity switches are available in Ø 8 mm, Ø 12 mm, Ø 18 mm, Ø 30 mm size models, allowing installation in tight or limited spaces and a variety of other user settings.

All-metal body for a variety of environments

The entire proximity switch, including the proximity switch head and housing, is constructed of 303 stainless steel for a robust design and high resistance to deformation, corrosion and bacterial transmission. These proximity switches are ideal for use in a variety of environments, including food and beverage manufacturing, chemical and metalworking industries.

food and drinks

The stainless steel 303 body minimizes the chance of germs spreading, and the one-piece design prevents cleaners or germicides from entering the proximity switch body.
Chemicals

Stainless steel 303 proximity switches are highly resistant to deformation and corrosion, making them ideal for chemical applications.
metalworking

Proximity switches are highly shock and wear resistant in metalworking applications and minimize the risk of failure due to weld spatter.

0.8mm thick metal proximity switch head provides shock and abrasion resistance

The 0.8mm thick metal proximity switch head provides strong shock and abrasion resistance, making the proximity switch ideal for environments where the proximity switch head may be damaged or worn by workpieces or wire brushes.

High resistance to magnetic field noise from welding current

The PRFA(W) series anti-spatter sensors are highly resistant to magnetic field noise generated by welding current.

PTFE coating prevents failures due to weld spatter

A non-stick PTFE coating prevents welding spatter from adhering to the sensor, minimizing the risk of failure during welding applications.

PTFE (Polytetrafluoroethylene) Coating: A synthetic fluoropolymer of tetrafluoroethylene with high heat resistance, low coefficient of friction, high abrasion resistance, non-stick properties and excellent dielectric properties.
Reduce the risk of failure caused by aluminum shavings

These proximity switches are designed to minimize the risk of failure caused by aluminum chips, providing high performance in environments with metal chips.

Oil Resistant (PVC) Cable
Robust oil-resistant cables allow the proximity switch to be installed in environments with hydraulic or cutting fluids.
Ring operation indicator (red LED)

The 360° ring-shaped operation indicator allows users to quickly identify the operation status from all angles.

Except PRFT08-1.5DO-V model

IP67 protective structure

IP67 protective construction provides reliable and trouble-free operation even in wet or dusty environments.

Application

Automating Automotive Manufacturing Processes (Video)

Automated vehicle manufacturing processes – stamping process/welding process/painting process
spot welding

All-metal inductive proximity sensors are used to set the position of the car door during the spot welding process.

proximity switch(English:proximity sensor) also calledproximity sensor, which is a device that can detect the presence of nearby objects without contactsensor.

Proximity sensors typically emitelectromagnetic fieldorElectromagnetic radiationbundle (e.g.infrared) and observeelectric fieldOr the change of the return signal to realize the function. The object that can be detected is called the target of the proximity switch. Different types of proximity switches have different goals, such asCapacitive Proximity SwitchorPhotoelectric switchpossible detectionplastictarget, andInductive proximityswitchCan only detect metal targets.

Sensors have a "nominal range" defined by their design, the maximum distance they can detect. Some sensors have the ability to adjust within the nominal range and to report the detection distance classification.

Therefore, the proximity switch has no mechanical parts, and there is no physical contact between the sensor and the object being sensed, resulting in high reliability and long service life.

Smartphones or similar mobile devices are often equipped with proximity switches. The device can wake up from sleep mode when a target is present within the nominal range. If the proximity sensor's target persists, the device can also ignore it and go back to sleep. A common design is that when using a smartphone to make a call, the proximity switch will detect the presence of the target and treat it as if it is placed in the ear, at which point the touchscreen will be temporarily turned off to avoid accidental operation.^[1]Proximity sensors are also used for vibration monitoring of some mechanical devices.

Proximity switches tuned to ultra-short distances can also be used as atact switch.

Proximity switch application

Reversing radar,installed atcar bumpersystem that senses the distance to nearby vehicles for parking
ground approach warning system
Vibration measurement of rotating shafts in mechanical installations^[2]
reciprocating enginein the upperstop(TDC)/camshaftsensor
Paper Break Sensing in Paper Machines
anti-aircraft gun
roller coaster
Conveyor system
mobile device
- Close when close to facetouch screen
- Decrease radio power when close to body to cutradiation exposure^[3]
automatic faucet