Keyence GT2-H12 Contact Sensor Head 12 mm

Product Introduction

The Keyence GT2-H12 is a standard box-type sensor head in the GT2 digital contact sensor lineup. It works together with a separate GT2 series amplifier to create a complete measurement system. Moreover, it uses the Scale Shot System for absolute position detection without tracking errors.

Since the head relies on absolute detection, it keeps position data even after power loss. Besides its 12 mm stroke, the unit achieves a resolution of 0.5 µm for accurate inspection work. Therefore, it fits dimensional checks, thickness measurement, and position sensing on automated equipment.

Technical Specifications

Detection and Measurement Performance

The GT2-H12 adopts an absolute Scale Shot System that removes tracking error. Its measuring range covers 12 mm, while the resolution reaches 0.5 µm. Furthermore, the indicated accuracy is 2 µm (p-p) for stable, repeatable results.

Measuring Force by Mounting Orientation

Measuring force changes with installation direction. Specifically, downward mounting produces 1.0 N, side mounting yields 0.9 N, and upward mounting delivers 0.8 N. Meanwhile, the sampling cycle runs at 1 ms with a mechanical response of 10 Hz at 20 °C.

Indicator and Connectivity

A 2-colour LED (red, green) gives clear operation status feedback. The head links to a GT2 series amplifier through an M8 connector. In addition, it provides no built-in communication ports or protocols, because the amplifier manages all signal processing.

Mechanical and Environmental Parameters

Protection Rating

The GT2-H12 holds an IP67 (IEC) protection rating. This seals the unit against dust ingress and temporary immersion. Consequently, it performs well in machining areas where coolant and debris are common.

Operating Environment

The operating temperature range spans -10 to +55 °C without freezing. Additionally, relative humidity tolerance is 35 to 85 % RH with no condensation. These limits support stable operation in most factory settings.

Physical Characteristics

The sensor head weighs approximately 95 g, excluding the cable. Its compact box design allows flexible mounting in tight fixtures. Meanwhile, the unit draws power directly from the GT2 amplifier, so no separate supply is needed.

Installation Guide

1. Amplifier Pairing: Connect the GT2-H12 to a compatible GT2 series amplifier using the M8 connector.

2. Mounting Orientation: Choose the mounting direction carefully, because measuring force differs for downward (1.0 N), side (0.9 N), and upward (0.8 N) installations.

3. Workpiece Alignment: Align the contact spindle perpendicular to the target surface to avoid side loading and measurement error.

4. Cable Routing: Route the cable away from high-voltage lines and moving machinery to prevent signal interference and wear.

Packaging List

• GT2-H12 Sensor Head (Main Unit)

• M8 Connector Cable

• Instruction Manual (Basic Setup Guide)

FAQ

Q1: What is the measuring range of the Keyence GT2-H12?
A1: The GT2-H12 provides a measuring range of 12 mm with a resolution of 0.5 µm.

Q2: Does this sensor head work without an amplifier?
A2: No, the GT2-H12 is a sensor head only. It requires a GT2 series amplifier to process signals and supply power.

Q3: What is the accuracy of the GT2-H12?
A3: The indicated accuracy is 2 µm (p-p) , supported by the absolute Scale Shot detection system.

Q4: Is the GT2-H12 protected against coolant and dust?
A4: Yes, the unit holds an IP67 (IEC) rating, so it resists dust and temporary immersion.

Q5: How does mounting orientation affect measuring force?
A5: Downward mounting gives 1.0 N, side mounting gives 0.9 N, and upward mounting gives 0.8 N.