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Description

Function:

These switches do not require any physical contact for their operation. They are capable of enabling or disabling an electronic circuit when any metallic object is brought close to their sensing face. They offer a wide range of operating distances and modes of operation.

Various Types of Inductive Proximity Switches:

  1. AC Proximity Switches
  2. Three Wire DC Proximity Switches
  3. Series Load Two Wire DC Proximity Switches
  4. Intrinsically Safe, NAMUR Type Proximity Switches
  5. Block Type Proximity Switches

  Non contact operation coupled with high precision & fast operation.
  Various Sizes and Types available.
  High Reliability.
  High Repeat Accuracy and High Speed Operation.
  Position / Alignment Indicator (LED Indication).
  Switches suitable for AC OR DC control supply.
  Short Circuit and Reverse Polarity Protection available for PNP & NPN type DC Proximity Switches for sizes above M12.
  Various Output Types available.
  Intrinsically Safe Design for Hazardous Area application.
  Standard cable length available is 2 meter.
  Chrome Plated Brass Housing (Standard).
  Dust and Water tight to IP-67.

Optional Features

  Special Switches for High Temperature Operation upto 150°C.
  Stainless Steel Housing available.
  Protective enclosures are available.
  Extra cable length available.

AC Type 3 Wire DC Type Series Load 2 Wire DC Type Intrinsically Safe Namur Type
Supply Voltage 110V AC, 50 Hz, or
230V AC, 50 Hz or
90 to 250V AC, 50 Hz
<8 to 30V DC 12 to 30V DC (24V DC Nominal) 8V DC
Output Solid State Thyristor, suitable to drive standard AC Relay or Contactor or PLC. Load Current 500 mA max. No load current less than 2mA.  Transistor, NPN (Sinking) or PNP (Sourcing) Suitable to drive PLC or Relay. Load current 300 mA max. for sizes upto M18 & 500mA max. for sizes above M18  Solid State, ON/OFF type. Load current is upto 300 mA max. upto M18 & 500 mA max. for sizes above M18. No load current is < 2 mA. Voltage drop is approx. 5V  Solid State output in form of Current Pulses.
1mA : OFF state Greater than 3mA : ON state
 
Protection   Reverse Polarity Protection and Short Circuit Protection. Overload protection for short duration. Short Circuit and Reverse Polarity Protection. To be powered through Zener Barrier
Mode Of Operation Normally Open (NO) or Normally Closed (NC)
Mode Of Sensing Flush or Non-flush
Repeatability Less than or equal to 1 % of Sn
Hysteresis Varies from 1 to 10 % of Sn, depending upon switch size. Typically 5%
Ambient Temp. Upto 55°C for standard switches, upto 150°C for High Temp. switches
Cable 2 Meter PVC cable (standard).Extra length available on request.
Enclosure Cylindrical housing is Nickel Chromium Plated, Threaded, Brass tube with 2 clamping nuts (standard). Totally sealed construction, IP-67 grade. Stainless Steel Housing available optionally.

Wide spread usage from numerically controlled machine tools with very close tolerances to Special Purpose Machines / Equipments with wide tolerances, for Motion Detection (Linear as well as Rotating), Limit Sensing, Counting etc.