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2-wire inductive proximity switches
3-wire inductive proximity switches with increased switching distance
3-wire standard inductive proximity switches
4-wire inductive proximity switches with increased switching distance
4-wire standard inductive proximity switches
Inductive proportional sensor
Inductive rotation sensor
Optical liquid level sensors
Inductive vehicle detector
Accesories

Technical information
Operating principle
Technical terms
Mounting instructions
Connection
Resistance to electromagnetic interference
Switch connection to an electric circuit
Applications
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Optical liquid level sensors :

Optical liquid level sensor - standard:


  • measurement, regulation and control of production in foodstuff (e.g. beverages production) or pharmaceutical industry
  • sensing of a tank filling or emptying, min. and max. liquid level detection
  • a pump dry run protection, etc.

Dimensions


POS 187 311 (312/313/314)



POS 187 411 (412/413/414)

Optical liquid level sensor for elevated temperatures :


  • detection of a liquid level in extreme conditions up to 140 °C

Dimensions


POS 287 311 (312/313/314)



POS 287 411 (412/413/414)



1 Control unit
2 Input
3 Output

Technical data


Nominal voltage: 24 VDC
Supply voltage range: 12 ... 30 VDC
Current consumption: 25 mA
Output: NPN, PNP
Output function: n.o. , n.c.
Max. output current: 200 mA
Output indicator: LED
Reverse polarity protection: Yes
Short circuit protection: Yes
Sensing distance (% of a dipped sensing tip): < cca 50%
Operating frequency: cca 35 kHz
Ambient temperature range:
- standard sensor:
- - process: -25 °C ... +100 °C
- - ambient: -25 °C ... +80 °C
- sensor for elevated temperatures:
- - process: -25 °C ... +140 °C
- - ambient: -25 °C ... +80 °C
Operating pressure: 20 bar
Protection:
- cable PVC (PUR) 3 x 0,25 mm2 IP 68
- connector M12 IP 67
Housing: stainless steel
Sensing tip: crystal glass

Connection
POS 187 311 / POS 187 411
POS 287 311 / POS 287 411
POS 187 312 / POS 187 412
POS 287 312 / POS 287 412


POS 187 313 / POS 187 413
POS 287 313 / POS 287 413
POS 187 314 / POS 187 414
POS 287 314 / POS 287 414
BR - brown, S - black, BL - blue
Cable version / Connector version

Mounting nut



Last updated: June 15, 2007
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Author: Jozef Wagner
Updated by: PLOSKON AT