Thermal Equipment Sales Co., Inc.
166 Neil Street, Memphis, Tn 38138
Phone: (901) 452-4516 FAX: (901) 452-4522
E-Mail: tesconian@aol.com
Proximity Sensor Page

We will Continue to update this page with application Notes for Object / Proximity Detection!!

Photo-Electric Sensors
Capacitive Proximity
Inductive Proximity
Limit Switches
Ultrasonic Sensors
  • Datalogic
  • Carlo Gavazzi
  • Tri-Tronics
  		•
  • Balluff
  • Tenor
  • Telemecanique
  • Joslyn Clark
  • MEK
  • Lundahl
    • Photo-Electric Sensors

    We Stock Photo-Electric Sensors
    Priciples Of Operation

    Thru-Beam

    These Sensors use an Emitter (Source) and Receiver (Sink) Housed seperate devices.
    When an object comes between the two devices it breaks the beam creating the signal.
    AdvantagesDraw backs
  • Powerfull Source
  • Dirty enviroments
  • No false signals (reflections)
  • Color Tolerante
    		•
  • Can't Read Transparent Objects
  • Alignment Problems
  • Two (2) Power Supplies
    		•
    Slot Sensor
    Places both the emitter and receiver in the same housing. This solves alignment problems.

    Retroreflective

    These Sensors use an Emitter (Source) and Receiver (Sink) Housed together.
    The light Source must bounce off a reflector and back to the Receiver.
    When an object comes between the device and the reflector it is detected.
    AdvantagesDraw backs
  • Long Sensing Distances
  • Easy to Align
    		•
  • Can't Read Transparent Objects
  • Shiny objects may work as reflector
  • Range relies on quality of reflector
    		•

    Polarized Retrorefective

    These Sensors use an Emitter (Source) and Receiver (Sink) Housed together.
    The light Source must bounce off a reflector and back Thru a polarizing filter to the Receiver.
    When an object comes between the device and the reflector it is detected.
    AdvantagesDraw backs
  • Detect Shiny Objects
  • Easy to Align
    		•
  • Can't Read Transparent Objects
  • Won't work on Non Reflective surfaces
  • Range relies on quality of reflector
    		•

    Diffused Scanner "Prox"

    These Sensors use an Emitter (Source) and Receiver (Sink) Housed together.
    The light Source must bounce off an object and back to the Receiver.
    When an object reflects light to the device it is detected.
    AdvantagesDraw backs
  • No Reflector Required
  • Easy to Align
    		•
  • Can't Read Transparent Objects
  • Range relies on color of object
    		•
    Fixed Focus
    These Sensors are used for small object detection.
    Background Suppression
    These sensors are capable of discriminating small objects independently from their surrounding backgrond. Their operating distance is not influenced by the color of the object.

    Capacitive Proximity
    Senses Non Metallic materials
    Advantages are:
  • small
  • no reflection required
    Disadvantages:
  • Short Sensing Distance
  • Static Charges**
  • RFI
    **NOTE:
    Carlo Gavazzi has Static protection built-in
    • Inductive Proximity
    Senses Metallic Objects
    Advantages are:
  • small
  • no reflection required
    Disadvantages:
  • Short Sensing Distance
    • Limit Switches

    Ultrasonic Sensors

    We Design and Build Systems For:

    [Temperature Control]Temperature Sensors [Level Control] [Flow Control] [Production Automation] [Proximity Detection] [Timer/Counters] [Current Monitoring] [Tank Heating] [Pipe Heating] [Plastics Heaters] [Freezer Floor Heating]
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