Technical Datasheet: TURCK BI8U-M18-AP6X-H1141

Series: uprox®+ (Extended Range Factor 1 Sensor)

Ident-No.: 1644731

1. Product Characteristics & Application

• Sensor Type: Inductive Proximity Sensor

• Housing Design: Threaded barrel type (M18 × 1) with a robust chrome-plated brass barrel construction.

• Sensing Range (Sn): 8 mm (Extended sensing range for M18 flush size)

• Mounting: Flush mountable (indicated by the flush installation graphic layout on the packaging label).

• Special Features: uprox®+ technology (Factor 1) — detects all magnetic and non-magnetic metals (steel, stainless steel, brass, aluminum, copper) at the exact same extended distance of 8 mm without any reduction factor. It features ultimate immunity to strong DC and AC magnetic fields (weld-field immune), making it an excellent fit for automotive body welding applications, high-speed automated assembly lines, and heavy-duty stamping machinery.

2. Electrical Data

• Operating Voltage: 10…30 V DC

• Rated Current Consumption: ≤ 200 mA

• Electrical Design: DC PNP

• Output Function: Normally Open (NO)

• Protection Class: Class II Connection required / Double insulated (UL listed, 36GN)

3. Performance & Dynamic Data

• Switching Frequency: High response frequency optimized for extended-range target verification, rapid counting loops, and precise positioning feedback.

• Short-Circuit Protection (SCP): Yes

• Overload & Reverse Polarity Protection: Yes

4. Mechanical & Environmental Data

• Dimensions: M18 × 1 mm thread / Standard industrial barrel length

• Housing Material: High-grade metal, Marine-grade Brass (Chrome-plated / PTFE coated)

• Ambient Operating Temperature: -30 °C…85 °C

• Ingress Protection (IP Rating): IP68 / IP69K

• Country of Origin: Made in Germany

• Item Code / Batch: 2407B

5. Electrical Connection & Wiring Layout

The sensor features an integrated standard male circular connector head (M12 × 1, 3-pin configuration).

Pinout Assignment:

• Pin 1 (BN): Brown wire → + (10…30 V DC Power Supply)

• Pin 3 (BU): Blue wire → – (0 V Ground / Common)

• Pin 4 (BK): Black wire → Output Switching Signal (Load)

Wiring Diagram:

       [ Pin 1 / BN ] ───────────────────────── ( + )
              │
          ┌───┴───┐
          │  PNP  │───────── [ Pin 4 / BK ] ──── [ Load ] ────┐
          │  N.O. │                                          │
          └───┬───┘                                          │
              │                                              │
       [ Pin 3 / BU ] ───────────────────────────────────────┴─── ( - )