Keyence GT2-PA12 Digital Contact Sensor Head

Keyence GT2-PA12 Digital Contact Sensor Head

Product Introduction

The GT2-PA12 belongs to the Keyence GT2 series of high-accuracy digital contact sensors. Specifically, it is a pencil-type sensor head with a standard 12 mm stroke. This model uses the Scale Shot System, which is an absolute detection method. Therefore, it avoids tracking errors that commonly appear in incremental systems. As a result, users gain stable and repeatable measurements in demanding industrial environments.

Technical Specifications

The GT2-PA12 delivers a measuring range of 12 mm. Its resolution reaches 0.1 µm, which supports fine position detection. Additionally, the indicated accuracy is 1 µm (p-p). The sampling cycle is 1 ms, so the sensor reacts quickly to position changes. Meanwhile, the mechanical response is 10 Hz at 20 °C. These specifications make the sensor suitable for inline inspection and automated assembly checks.

Communication and Electrical Profile

This sensor head has no built-in communication ports. Furthermore, it supports no standalone protocols. Instead, it connects to a GT2 series amplifier through an M8 connector. The amplifier supplies power and handles signal processing. Besides, the GT2-PA12 does not provide a direct output type on its own. Therefore, users must pair it with a compatible GT2 amplifier to complete the measurement chain.

Mechanical and Environmental Parameters

The GT2-PA12 operates from 0 to +55 °C without freezing. Its relative humidity range is 35 to 85 % RH with no condensation. Moreover, the protection rating is IP67 under IEC standards. This rating protects the sensor against dust and temporary water immersion. The measuring force is 0.2 N when mounted downward. In addition, the sensor weighs approximately 35 g without cable but with the relay connector. An operation indicator uses a two-colour LED for red and green status.

Installation Guide

First, mount the GT2-PA12 securely on a fixture or bracket. The pencil-type body fits into tight spaces where larger sensors cannot reach. Next, connect the M8 connector to a compatible GT2 series amplifier. After that, verify the downward mounting orientation if the application requires 0.2 N measuring force. Finally, power the amplifier and check the two-colour LED for normal operation. Proper alignment reduces side load and protects the internal scale mechanism.

Packaging List

• 1 × Keyence GT2-PA12 Digital Contact Sensor Head

• 1 × Relay Connector

• 1 × Protective Cap

• 1 × Installation Instruction Sheet

Shipping

We ship all orders through Fedex, UPS, and DHL. Each package uses protective foam and an anti-static bag. Therefore, the sensor head arrives in safe condition for immediate installation.

FAQ

Q1: What is the measuring range of the GT2-PA12?
A: The GT2-PA12 provides a 12 mm measuring range with 0.1 µm resolution.

Q2: Does this sensor head work without an amplifier?
A: No, it requires a GT2 series amplifier for power and signal processing.

Q3: What is the accuracy of this Keyence sensor head?
A: The indicated accuracy is 1 µm (p-p) under standard conditions.

Q4: Can I use the GT2-PA12 in wet environments?
A: Yes, its IP67 rating protects against dust and temporary water exposure.

Q5: How does the sensor connect to the amplifier?
A: It connects through an M8 connector and includes a relay connector in the package.