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Cylindrical M12 inductive sensor, grey plastic threaded barrel, cable exit

Turck

Turck BI2-S12-RZ31X 13120 M12 inductive sensor electrician tool

SKU CH-YSEK-88BH7 MPN BI2-S12-RZ31X

An M12 inductive sensor with a 2 mm switching distance, NC contact, and PA12-GF30 housing for flush mounting

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • M12 threaded barrel enables flush mounting in tight spaces
  • 2 mm switching distance detects metal targets reliably
  • AC/DC operating voltage works with diverse control systems
  • PA12-GF30 housing resists impact and chemicals
  • 84 g lightweight design simplifies installation and handling

Purpose-built inductive sensor

The Turck BI2-S12-RZ31X 13120 is a flush-mount M12 inductive sensor designed for electricians and automation technicians who need reliable metal detection in industrial environments. Its NC contact output and AC/DC operating voltage make it suitable for integration into existing control circuits without additional interface modules.

Installation and wiring

A threaded M12 × 1 barrel allows direct mounting into standard sensor ports, while the PA12-GF30 plastic housing resists oils and coolants common on machine frames. The 2-wire cable connection simplifies wiring by eliminating a separate power conductor, freeing terminal space in crowded junction boxes.

Thermal and electrical behaviour

Rated switching distance of 2 mm provides a consistent trigger point for ferrous targets across the 10300 VDC and 35250 VDC supply ranges. The sensor draws minimal leakage current in the closed state, keeping control-voltage drop low and preventing nuisance trips on sensitive PLC inputs.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 90% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameTURCK
Model nameBI2-S12-RZ31X 13120
Product typeTest Equipment
In the box
Number of items1 pack

Questions about this item

How close can a target be before the BI2-S12-RZ31X stops detecting it reliably?

The rated switching distance is 2 mm, so the sensor will not trigger once a target moves closer than that threshold.

Does the PA12-GF30 housing get hot during continuous AC operation?

The housing material is rated for the specified AC and DC voltages, so normal operation at 35250 VDC AC or 10300 VDC DC should not cause overheating.

What cable type do I need to connect the NC contact on this M12 sensor?

The sensor uses a built-in cable connection, so no separate connector or cable assembly is required for the NC contact.

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