Description
The Keyence GT2-A12 is a high-precision digital contact sensor head from the GT2 Series, engineered for accurate dimensional and displacement measurement in automated systems. Featuring an air-cylinder type mechanism and a quartz glass scale detection system, the GT2-A12 provides exceptional repeatability and stability even under harsh industrial conditions. With a measuring range of 12 mm and IP67 protection, it ensures reliable performance in manufacturing, inspection, and quality control applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Keyence |
| Category |
Sensors & Switches |
| Part Number |
GT2-A12 |
| Subcategory |
Laser Gauging System |
| Detection System |
Quartz glass scale, CMOS image sensor projection system (Absolute type) |
| Measuring Range |
12 mm (0.47") |
| Resolution |
0.5 µm (0.02 mil) |
| Indicated Accuracy |
±2 µm (0.08 mil p-p) |
| Sampling Cycle |
1 ms |
| Measuring Force |
1.2 N (downward), 1.1 N (side), 1.0 N (upward) |
| Fluid Used |
Dry air |
| Operation Indicator |
2-color LED (red/green) |
| Enclosure Rating |
IP67 (IEC60529) |
| Pressure Resistance |
1 MPa |
| Applied Pressure Range |
0.25–0.5 MPa |
| Ambient Temperature |
0 to +55°C (32°F to 131°F, no freezing) |
| Relative Humidity |
35%–85% RH (no condensation) |
| Vibration Resistance |
10–55 Hz, 1.5 mm double amplitude, 2 h in each X/Y/Z direction |
| Shock Resistance |
1000 m/s² (IEC60068-2-27) |
| Materials |
Zinc die-cast main body, aluminum cylinder, stainless steel contact (SUS440C/304), brass nickel-plated fittings |
| Dust Boot |
NBR (rubber) |
| Sensor Head Cable |
Optional, M8 connector type |
| Weight |
Approx. 0.31 lbs (145 g, excluding cable) |
Information About GT2-A12
The GT2-A12 belongs to Keyence’s GT2 Series of digital contact sensors, known for their high accuracy and robust construction. It uses a quartz glass scale and CMOS image sensor projection system to deliver absolute-type position measurement without tracking errors. The air-cylinder configuration allows consistent contact pressure and smooth measurement of moving parts or delicate components. Its IP67-rated housing, corrosion-resistant stainless steel contact, and high vibration resistance make it ideal for precision measurement in machining, assembly, and inspection environments.
Key Features:
- High Precision Measurement: Achieves 0.5 µm resolution and 2 µm accuracy (p-p).
- 12 mm Measuring Range: Suitable for a wide range of measurement applications.
- Quartz Glass Scale: Provides excellent thermal stability and long-term accuracy.
- Air Cylinder Model: Ensures constant measuring force with smooth linear motion.
- High-Speed Sampling: 1 ms response time for real-time detection in automation.
- Durable Construction: Zinc die-cast body with aluminum and stainless steel components.
- Environmental Protection: IP67-rated enclosure for protection against water and dust.
- LED Status Indicators: Dual-color LED (red/green) for easy status confirmation.
- Strong Mechanical Endurance: 1 MPa pressure resistance and vibration-tested durability.
- Compact and Lightweight: Designed for easy installation and integration in measurement systems.
The GT2-A12 delivers outstanding precision and reliability for both contact-type measurements and automated in-line inspection systems.
