Keyence GT2-PA12KL Low-Stress Sensor Head

Keyence GT2-PA12KL Low-Stress Sensor Head

Product Introduction

The GT2-PA12KL is a high-accuracy digital contact sensor head from the Keyence GT2 series. Its pencil shape fits narrow fixtures, while the low-stress design protects soft materials. With a 12 mm measuring range and 0.1 µm resolution, it supports fine dimensional inspection. The head uses the Scale Shot System, an absolute type without tracking error. Therefore, operators avoid zero-point resets after power loss. Additionally, the unit connects to GT2 series amplifiers through an M8 connector. Many engineers choose the GT2-PA12KL for measuring rubber, plastic, and thin metal parts.

Technical Specifications

The Keyence GT2-PA12KL relies on the Scale Shot System, an absolute detection method. Its measuring range reaches 12 mm, covering many inspection tasks. Resolution is 0.1 µm, so the head detects extremely small position changes. Indicated accuracy stays at 1 µm (p-p) for dependable readings. The sampling cycle runs at 1 ms, allowing fast data updates. Mechanical response is 10 Hz at 20 °C. Meanwhile, a 2-colour LED (red and green) shows operation status clearly.

Measuring force is 0.2 N when mounted downward. This low force protects delicate surfaces during contact. However, the head provides no built-in ports, protocols, or communication expansion. Instead, it sends signals to a GT2 series amplifier for processing.

Electrical and Environmental Data

The GT2-PA12KL receives power from a GT2 series amplifier, so no separate supply voltage is needed. Output type and power consumption are not available because the head works as a passive measuring device. Operating temperature ranges from 0 to +55 °C with no freezing. Meanwhile, relative humidity stays between 35 and 85 % RH with no condensation. Protection rating and storage temperature are not available from the official specification. Therefore, users should shield the head from heavy coolant spray and dust.

Mechanical Data

The GT2-PA12KL weighs approximately 35 g including the relay connector but not the cable. Exact dimensions are not available from the official specification. Consequently, installers should verify bracket clearance before fitting the head. The pencil body suits tight fixtures and small assembly stations.

Installation Guide

First, mount the GT2-PA12KL on a rigid bracket so the spindle contacts the workpiece squarely. Next, connect the M8 connector to a compatible GT2 series amplifier. After that, set the measuring force direction according to the mounting orientation. Moreover, keep cable runs away from high-voltage lines to reduce noise. Finally, zero the amplifier and verify readings with a gauge block. Always power down before connecting or removing the head.

Packaging List

• One Keyence GT2-PA12KL digital contact sensor head

• One relay connector

• Installation guide

FAQ

Q1: What is the main function of the GT2-PA12KL?
A: The GT2-PA12KL measures displacement through physical contact. It sends position data to a GT2 series amplifier for display and judgment.

Q2: How does the low-stress design help my application?
A: The 0.2 N measuring force reduces surface marks on soft parts. As a result, it suits rubber, plastic, and thin metal workpieces.

Q3: What does the Scale Shot System offer?
A: It is an absolute detection method without tracking error. Therefore, the head keeps its position data even after power interruption.

Q4: Does the GT2-PA12KL work without an amplifier?
A: No. This sensor head needs a compatible GT2 series amplifier. It cannot operate as a standalone measuring device.

Q5: How is the GT2-PA12KL shipped?
A: We ship this unit through Fedex, UPS, or DHL. Packaging protects the sensor head and connector during transit.