Turck TQ412 (111-412-000-012) – M12 Inductive Proximity Sensor | TQ Series Platform
Engineering Background
The Turck TQ412 series is Turck’s compact M12-barrel inductive proximity sensor platform, engineered for demanding factory-floor environments where reliable non-contact detection of metallic targets is critical. Part number 111-412-000-012 is a direct-replacement, OEM-equivalent sensor widely deployed in automotive assembly, packaging machinery, and discrete manufacturing cells. Konmask.com stocks and ships this part globally with full traceability documentation available on request.
Product Positioning
Designed for procurement engineers who require a drop-in replacement or new-build sensor with verified Turck lineage, the TQ412 111-412-000-012 delivers consistent switching performance, robust EMI immunity, and IP67 ingress protection — all within the industry-standard M12 threaded barrel form factor.
Complete Technical Specifications
| Manufacturer | Turck (Hans Turck GmbH & Co. KG) |
| Part Number (SKU) | 111-412-000-012 |
| Model / Series | TQ412 | TQ Series |
| Sensor Type | Inductive Proximity Sensor |
| Housing Form Factor | M12 Cylindrical Barrel (12 mm diameter) |
| Sensing Distance (Sn) | Refer to Turck datasheet for exact Sn value |
| Output Type | PNP / NPN (confirm with Turck datasheet for this P/N) |
| Switching Function | Normally Open (NO) / Normally Closed (NC) |
| Supply Voltage (Vcc) | 10 – 30 V DC |
| Current Consumption | ≤ 15 mA (no load) |
| Load Current (max) | 200 mA |
| Short-Circuit Protection | Yes |
| Reverse Polarity Protection | Yes |
| Switching Frequency | Up to 3,000 Hz |
| Hysteresis | ≤ 20% of Sn |
| Repeat Accuracy | ≤ 5% of Sn |
| Operating Temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C to +85 °C |
| Protection Rating | IP67 (IEC 60529) |
| Housing Material | Nickel-plated brass |
| Connection Type | M12 4-pin connector / integral cable (confirm per datasheet) |
| Indicator | Yellow LED switching indicator |
| Weight | ~320 g (with cable/connector) |
| Standards Compliance | CE, UL, RoHS |
| Country of Origin | Germany |
Proven Application Environments
- Automotive Assembly Lines — Part presence detection on conveyor and transfer systems
- Packaging Machinery — High-speed label, cap, and carton detection
- Machine Tool & CNC — Spindle home position, tool-changer confirmation
- Robotics & End-of-Arm Tooling — Gripper open/close feedback
- Food & Beverage Processing — Wash-down compatible (IP67) position sensing
- Material Handling — Pallet, bin, and tote detection on AGV systems
Engineering Advantages
- Non-contact detection — Zero mechanical wear; rated for millions of switching cycles
- IP67 sealed housing — Withstands coolant, dust, and wash-down environments
- Wide supply voltage range (10–30 V DC) — Compatible with 12 V and 24 V PLC I/O cards without additional conditioning
- Integrated short-circuit & reverse-polarity protection — Reduces field wiring errors and protects PLC inputs
- EMI-immune inductive technology — Reliable operation near VFDs, servo drives, and welding equipment
- LED status indicator — Instant visual commissioning and fault diagnosis without test equipment
- M12 industry-standard form factor — Direct mechanical and electrical interchangeability with competing M12 sensors
System Architecture & Signal Flow
The TQ412 integrates directly into standard PLC discrete input architectures:
- Power supply: 24 V DC from PLC power rail or dedicated sensor PSU → Brown wire (Pin 1)
- Output signal: Switching output → Black wire (Pin 4) → PLC DI module (Siemens S7, Allen-Bradley, Mitsubishi, Omron, Schneider, etc.)
- Common (0 V): Blue wire (Pin 3) → PLC common / 0 V rail
- Shield / FE: Connect cable shield to panel earth at one end only to prevent ground loops
- Recommended cable length: ≤ 30 m for standard installations; use shielded cable for runs > 10 m near noise sources
Sourcing & Quality Verification
- All units sourced through authorized Turck distribution channels or verified surplus with full traceability
- Each unit inspected for physical integrity, label authenticity, and connector condition prior to dispatch
- Certificate of Conformance (CoC) and original Turck datasheet available upon request
- Batch/lot documentation available for MRO and OEM procurement requirements
- RoHS compliance documentation available on request
Procurement Process
- Confirm quantity & lead time — Contact [email protected] for real-time stock levels and bulk pricing
- Request quotation — Provide your PO number, delivery address, and required delivery date
- Order placement — Add to cart and check out online, or submit a formal PO via email
- Shipping & tracking — DHL / FedEx / UPS international express; tracking number provided within 24 hours of dispatch
- Documentation — Commercial invoice, packing list, CoC, and datasheet included with every shipment
Technical FAQ
Q: Is the TQ412 111-412-000-012 a flush or non-flush mount sensor?
A: The TQ412 series is available in both flush (shielded) and non-flush (unshielded) variants. Please confirm the mounting requirement against the Turck datasheet for this specific P/N before installation.
Q: Can this sensor detect non-ferrous metals (aluminum, copper)?
A: Yes, inductive sensors detect all conductive metals, but the effective sensing distance is reduced for non-ferrous targets (typically 40–60% of the rated Sn for steel). Apply the appropriate reduction factor per Turck’s published correction factors.
Q: Is this sensor compatible with Siemens S7-1200/1500 PLC digital inputs?
A: Yes. The 24 V DC PNP output is directly compatible with Siemens S7-1200/1500 Type 1/3 digital input modules. No signal conditioning is required.
Q: What is the replacement / cross-reference for this part?
A: The 111-412-000-012 is the Turck internal part number for the TQ412 model. Cross-reference with your existing BOM or contact us for alternative sourcing options.
Q: Do you offer expedited shipping for urgent MRO requirements?
A: Yes. Same-day dispatch is available for in-stock orders placed before 14:00 CST. Contact [email protected] or call +0086 19859288691 for urgent requirements.
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