Keyence GT2-PA12L Low-Stress Digital Contact Sensor Head
Product Introduction
The GT2-PA12L is part of the Keyence GT2 series of high-accuracy digital contact sensors. Specifically, this model is a pencil-type sensor head with a low-stress design. It shares the same 12 mm stroke as the standard version. However, its low measuring force makes it ideal for soft or fragile targets. Therefore, it prevents deformation during contact measurement.
Technical Specifications
The GT2-PA12L covers a measuring range of 12 mm. Its resolution reaches 0.1 µm for fine position feedback. Additionally, the indicated accuracy is 1 µm (p-p). The sampling cycle is 1 ms, enabling fast data capture. Meanwhile, the mechanical response is 10 Hz at 20 °C. These values support stable performance in automated inspection systems.
Detection and Measurement Principle
This sensor head uses the Scale Shot System with absolute detection. As a result, it produces no tracking error during operation. Furthermore, the absolute method keeps position data valid after power interruptions. The low-stress spindle applies only 0.2 N when mounted downward. Consequently, the GT2-PA12L protects thin films, glass, and precision parts from damage.
Communication and Electrical Profile
The GT2-PA12L has no built-in communication ports. Besides, it supports no standalone protocols or expansion modules. Instead, it connects to a GT2 series amplifier through an M8 connector. The amplifier provides power and processes the signal. Therefore, users must select a compatible GT2 amplifier to build a complete system.
Mechanical and Environmental Parameters
The sensor head operates from 0 to +55 °C without freezing. Its relative humidity range is 35 to 85 % RH with no condensation. Moreover, the operation indicator uses a two-colour LED for red and green. The unit weighs approximately 35 g without cable but with the relay connector. In addition, the pencil-type body fits into narrow fixtures and tight mounting spaces.
Installation Guide
First, mount the GT2-PA12L on a rigid bracket or fixture. The low-stress spindle works best when aligned perpendicular to the target surface. Next, connect the M8 connector to a GT2 series amplifier. After that, confirm the downward mounting direction to achieve the rated 0.2 N force. Finally, power the amplifier and check the two-colour LED. Proper alignment minimizes side load and extends spindle life.
Packaging List
Shipping
We ship all orders through Fedex, UPS, and DHL. Each unit is packed with anti-static foam and a protective bag. Therefore, the sensor head arrives ready for immediate use.
FAQ
Q1: What makes the GT2-PA12L different from the GT2-PA12?
A: The GT2-PA12L uses a low-stress design for delicate workpieces, while the standard model targets general measurement.
Q2: What is the measuring force of this sensor head?
A: It applies 0.2 N when mounted downward, which suits soft or fragile targets.
Q3: Does the GT2-PA12L need an amplifier?
A: Yes, it requires a GT2 series amplifier for power and signal processing.
Q4: What is the resolution of this Keyence sensor head?
A: The GT2-PA12L offers 0.1 µm resolution with 1 µm (p-p) indicated accuracy.
Q5: How does the sensor connect to the controller?
A: It links to a GT2 amplifier through an M8 connector and includes a relay connector.
