Turck
Part number: 32-908
Pack size: EA
Type: Inductive 
Distance: 8mm 
Output: NPN (- Switching) 
Operation: N/O-N/C 
Thread: M18 
Mount: Non-Flush 
Feature: Pre-Wired 2m, IP67 

Part # 32-908
Part # 32-908
Part # 32-908

With respect to sensors, an NPN device is one that can switch the negative side of the
circuit, while a PNP device switches the positive side.

An Inductive proximity switch is used to detect metal objects within specific operating ranges.
The sensor emits a magnetic field and detects metallic objects when they move into the field
without the need for contact. This sensor suits both normally open, and normally closed applications.

Advantages of inductive proximity sensors include insensitivity to water, oil, dirt, non-metallic
particles, surface finish, and the ability to withstand high shock and vibration environments.
Because the sensor does not require physical contact it is particularly useful for applications
where access presents challenges or where dirt is prevalent. These sensors are ideal for
measuring and control applications, and suit a wide variety of automated automotive and
industrial processes
such as hoists, tail lifts, dump trucks, waste / garbage trucks, diggers etc.

Rated switching distance Sn:  8 mm

  • Mounting conditions:  Flush
  • Secured operating distance:  < (0,81 x Sn) mm
  • Correction factors:  St37 = 1; Al = 0.3; stainless steel = 0.7; Ms = 0.4
  • Repeat accuracy:  < 2 % of full scale
  • Temperature drift:  < ± 10 %
  • Hysteresis:  3…15 %
  • Ambient temperature:  -25…+70 °C

Operating voltage:  10…30 VDC

  • Residual ripple:  < 10 % Uss
  • DC rated operational current:  < 200 mA
  • No-load current I0:  < 15 mA
  • Residual current:  < 0.1 mA
  • Isolation test voltage:  < 0.5 kV
  • Short-circuit protection:  yes/ Cyclic
  • Voltage drop at Ie:  < 1.8 V
  • Wire breakage/Reverse polarity protection:  yes/ Complete
  • Output function:  4-wire, Complementary contact, NPN
  • Switching frequency:  0.5 kHz

Design:  Threaded barrel,M18 × 1

  • Dimensions:  54 mm
  • Housing material:  Metal, CuZn, Chrome-plated
  • Active area material:  Plastic, PA12-GF30
  • End cap:  Plastic, EPTR
  • Max. tightening torque housing nut:  25 Nm
  • Electrical connection:  Cables
  • Cable quality:  5.2 mm, Gray, LifYY, PVC, 2
  • Cable cross section:  4 x 0.34 mm2
  • Vibration resistance:  55 Hz (1 mm)
  • Shock resistance:  30 g (11 ms)
  • Protection class:  IP67
  • MTTF:  2283 years acc. to SN 29500 (Ed. 99) 40 °C
  • Packaging unit:  1

Switching state:  LED, Yellow