The GT2-A12KL is a low-stress digital contact sensor head in the Keyence GT2 series. This air push type unit uses dry air to extend and retract its probe. As a result, it fits automated gauging stations that need gentle part contact. The Scale Shot System provides absolute encoding. Therefore, the sensor keeps its position reference even after a power cycle. Its 12 mm measuring range handles small to medium features. Meanwhile, the 0.1 µm resolution captures extremely fine dimensional changes. The 1 µm indicated accuracy meets strict tolerance requirements. This sensor head connects to a GT2 series amplifier through an M8 connector. Typical uses include glass panel checks, thin-film measurement, and soft alloy inspection.
The GT2-A12KL uses the Scale Shot System, an absolute detection method. This design eliminates tracking errors completely. The measuring range is 12 mm. Additionally, the resolution reaches 0.1 µm. The indicated accuracy is 1 µm (p-p). The sampling cycle is 1 ms, which keeps pace with fast production lines.
Measuring force is the key difference from the standard model. Downward mounting produces only 0.4 N. Side mounting produces 0.3 N. Upward mounting produces just 0.2 N. These ultra-low forces protect fragile surfaces from scratches or deformation. A two-colour LED (red and green) shows operation status. This indicator simplifies setup and daily checks.
The air push mechanism requires dry air only. Moisture can damage internal seals and shorten service life. The pressure resistance is 1 MPa. Furthermore, the applied pressure range is 0.25 to 0.50 MPa. Working below this range may cause incomplete probe extension. Working above it may stress the internal piston. Therefore, install a dependable regulator and filter on the air line. A dry air supply also prevents condensation inside the head.
The GT2-A12KL has no built-in ports or protocols. It links to a GT2 series amplifier via an M8 connector. The amplifier supplies power and manages all signal output. Because of this, supply voltage and power consumption ratings are not listed for the head alone. Output type also depends on the amplifier model. This modular design lets users swap the head without changing the whole system. However, the head cannot work as a standalone device.
The sensor head weighs approximately 145 g, excluding the cable. Its dimensions are not published in the standard specification sheet. The operating temperature range is 0 to +55 °C with no freezing. Relative humidity should stay between 35 and 85 % RH without condensation. The protection rating is not available in the current specification data. Therefore, confirm the sealing level with your supplier before use in wet areas.
First, mount the GT2-A12KL with the correct bracket for your fixture. The measuring force changes with orientation, so pick the direction that best protects your part. Next, connect the dry air line to the push port. Then, set the regulator between 0.25 and 0.50 MPa. After that, attach the M8 connector to a compatible GT2 amplifier. Make sure the connector is fully tight to preserve sealing performance. Finally, cycle the air push several times and check the LED status. Secure all cables and tubing to avoid strain on the connectors.
1 × Keyence GT2-A12KL Low-Stress Air Push Digital Contact Sensor Head
1 × M8 connector cable (as configured)
1 × Mounting bracket set
1 × Air fitting kit
1 × Protective cap
1 × Quick start sheet
Q1: What is the resolution of the GT2-A12KL?
A: The resolution is 0.1 µm. This ultra-fine resolution supports sub-micron inspection tasks.
Q2: How low is the measuring force on this model?
A: Upward mounting gives just 0.2 N. Side mounting gives 0.3 N, and downward mounting gives 0.4 N.
Q3: What air pressure does this sensor head need?
A: Use dry air between 0.25 and 0.50 MPa. The pressure resistance limit is 1 MPa.
Q4: Can the GT2-A12KL run without a GT2 amplifier?
A: No. The sensor head requires a GT2 series amplifier for power and signal processing.
Q5: What shipping methods do you offer?
A: We ship worldwide via Fedex, UPS, and DHL. Contact us for lead times and freight quotes.
| Brand Name | |
| Model No. | GT2-A12KL |
| Product Type | Sensor Head |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
