New Original Keyence GT2-P12 Digital Contact Measurement Sensor Head
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New Original Keyence GT2-P12 Digital Contact Measurement Sensor Head
1. Product Overview
The GT2-P12 is a pencil-style general-purpose digital contact displacement sensor head belonging to Keyence GT2 high-precision contact measurement series. It adopts proprietary Scale Shot System II absolute encoding detection principle, eliminating cumulative position drift and zero-point loss without repeated homing operations. This sensor head must cooperate with GT2 series dedicated amplifiers to output digital displacement data for industrial precision measurement. With a full 12 mm linear measuring stroke, moderate standard measuring force and slender cylindrical pencil structure, it adapts to multi-angle installation including downward, lateral and upward mounting on automated jigs, CNC machine tools, electronic assembly stations and precision inspection equipment. The fully sealed dust-proof and oil-resistant structure enables stable operation in workshop environments with cutting fluid, metal powder and oil mist splashing. Widely applied in workpiece thickness detection, height difference measurement, dimensional sorting, axial runout inspection and component positioning confirmation for automotive parts, semiconductor components, plastic molds and hardware machined parts.
2. Main Functions
- Absolute position measurement: Built-in absolute scale coding, no position data loss after power cycle, no mandatory origin reset.
- Multi-angle compatible measurement: Stable detection performance under downward, horizontal and upside-down installation orientations.
- Two-color LED status indication: Green light for normal measurement, red light for over-travel or abnormal contact status.
- Wide environmental adaptability: Dust, oil and splash resistance for machining, assembly and semi-open production workshops.
- Consistent measuring force output: Stable spring pressure to avoid workpiece surface scratches during contact detection.
- High linearity full-stroke detection: Uniform precision across the entire 12 mm measuring range without sensitivity attenuation at stroke limits.
- High mechanical shock and vibration resistance: Withstands frequent equipment oscillation and accidental impact during mass production.
- Modular expandability: Matches all GT2 series amplifiers to support digital communication, comparative judgment and analog conversion output.
- Replaceable contact stylus: Standard SUS wear-resistant probe tip can be swapped according to workpiece material and surface shape.
- Low maintenance long service life: Reinforced sliding spindle and NBR dust boot reduce wear from long-term reciprocating movement.
3. Technical Specifications & Core Technical Features
Core Technical Parameter Table
| Parameter Category | Detailed Technical Data |
|---|---|
| Detection Principle | Scale Shot System II, absolute encoding type |
| Full Measuring Stroke | 12 mm |
| Optical Resolution | 0.5 μm |
| Overall Indicated Accuracy | 2 μm (peak-to-peak across full range) |
| Measuring Force (Downward Mount) | 1.0 N |
| Measuring Force (Side Mount) | 0.95 N |
| Measuring Force (Upward Mount) | 0.9 N |
| Sampling Cycle | 4 ms |
| Maximum Mechanical Response Frequency | 10 Hz |
| Operating Temperature Range | -10 °C ~ +55 °C |
| Storage Temperature Range | -20 °C ~ +70 °C |
| Relative Humidity Requirement | 35% – 85% RH, non-condensing |
| Vibration Resistance | 10–55 Hz, double amplitude 1.5 mm, X/Y/Z axis 2 hours each |
| Shock Resistance | 1000 m/s² (IEC 60068-2-27 standard) |
| Main Housing Material | SUS303 stainless steel |
| Spindle & Contact Tip Material | SUS430 spindle, SUS440C wear-resistant stylus |
| Dust Boot Material | Oil-resistant NBR rubber |
| Protection Grade | Dust-proof and splash-proof against workshop oil mist and metal debris |
| Matching Cable Type | Optional M8 PUR oil-resistant extension cable (2 m / 5 m / 10 m) |
Key Technical Features
- Absolute scale encoding technology: Unlike traditional incremental LVDT sensors, it records absolute coordinate values, avoiding data offset after power off and restart, simplifying automated program logic.
- Integrated oil-dust sealing structure: Multi-layer NBR dust boot tightly wraps the sliding spindle to block coolant, fine metal shavings and industrial dust from entering internal optical components.
- Uniform low measuring force design: Balanced internal spring assembly provides soft and stable contact pressure, protecting thin, fragile or coated workpieces from indentation damage.
- High-rigidity stainless steel pencil body: Anti-deformation cylindrical housing maintains straight spindle movement under clamping force and mechanical vibration.
- Anti-wear fluorine-coated sliding spindle: Reduces reciprocating friction coefficient, extending service life under millions of continuous measurement cycles.
- Full-range linearity compensation circuit: Internal optical path calibration eliminates measurement deviation at upper and lower stroke limits to ensure consistent precision across the full 12 mm travel.
- Visual dual-color diagnostic LED: Real-time measurement state feedback without additional detection software, convenient for on-site equipment debugging and fault troubleshooting.
- Universal amplifier compatibility: Works with GT2-71N, GT2-72N and other GT2 amplifier models to support multi-channel synchronous measurement and data transmission.
4. Product Dimensions and Weight
Pencil Sensor Head Dimensions
- Outer diameter of main cylindrical body: φ8 mm
- Total overall length of sensor head (excluding relay connector): 126 mm
- Effective sliding spindle travel length: 12 mm
- Stylus contact tip protruding length: 3 mm
- Relay connector mounting segment length: 16 mm
Weight Data Table
| Assembly Component | Net Weight |
|---|---|
| Standalone GT2-P12 sensor head (without extension cable) | 35 g |
| Standard 2-meter GT2-CHP2M matching cable | 42 g |
| Complete measurement set (GT2-P12 head + 2 m oil-resistant cable) | 77 g |
| Separate replacement contact stylus accessory | 1.2 g |
5. 10 Keyence Digital Contact Sensor Heads with Similar Functions
All listed models belong to Keyence GT2 series pencil-type contact displacement sensors, featuring absolute scale measurement, linear contact detection and full compatibility with GT2 amplifiers for precision dimensional inspection:
- Keyence GT2-P12K High-precision General-purpose Sensor Head
- Keyence GT2-P12L Low Measuring Force General-purpose Sensor Head
- Keyence GT2-P12F Flange-mounted GT2-P12 Variant Sensor Head
- Keyence GT2-PA12 Air-cylinder Retractable Pencil Sensor Head
- Keyence GT2-H12 Horizontal Short Stroke Contact Sensor Head
- Keyence GT2-S1 Short-range Pencil Measurement Sensor Head
- Keyence GT2-S5 Mini Short Stroke Contact Sensor Head
- Keyence GT2-A12 Built-in Air Cylinder Displacement Sensor Head
- Keyence GT2-P12KL High-precision Low Measuring Force Sensor Head
- Keyence GT2-PA12K Air-cylinder High-precision Contact Sensor Head
WHO WE ARE
Sobre nosotros
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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