Keyence GT-H22L Sensor Head | GT Series

Keyence GT-H22L Low-Stress Sensor Head

Product Introduction

The GT-H22L belongs to the Keyence GT series, a line of general-purpose digital contact sensors. Specifically, this model serves as a low-stress sensor head that minimizes physical pressure on delicate targets. Furthermore, its 22 mm measuring range makes it suitable for various position verification tasks. Meanwhile, the sensor head does not include a built-in amplifier, so it requires connection to a compatible GT series amplifier for power and signal processing.

Technical Specifications

The GT-H22L sensor head delivers precise measurement with a repeatability of 8 µm at 23 °C. Additionally, its mechanical response reaches 5 Hz under the same temperature conditions. The measuring force depends on installation orientation: downward mounting produces 0.35 N, side mounting yields 0.3 N, and upward mounting results in 0.25 N. These values ensure gentle contact with workpieces that might deform under higher pressure.

Moreover, the sensor head features a robust construction. The housing and contact element use stainless steel, specifically TYPE430 and TYPE304 respectively. The cable measures 2 meters in length, and the entire assembly weighs approximately 135 g. For operation, the GT-H22L connects directly to a GT series amplifier, which supplies power and converts the signal for further processing.

Mechanical and Environmental Parameters

The GT-H22L operates reliably across a range of industrial environments. Its ambient temperature rating spans -10 to +55 °C with no freezing permitted. Additionally, the relative humidity tolerance covers 35 to 85 % RH without condensation. However, the sensor head itself does not carry a defined enclosure protection rating, so users should avoid direct exposure to liquids or excessive dust.

First, consider the mounting orientation carefully. The measuring force varies significantly between downward, side, and upward installations. Next, verify that the target surface can withstand the applicable force without deformation. Finally, ensure the cable routing avoids sharp bends and extreme temperatures.

Installation Guide

Installing the GT-H22L requires pairing it with a GT series amplifier unit. First, connect the 2-meter cable to the amplifier input terminal according to the amplifier manual. Next, secure the sensor head using its mounting threads or bracket accessories. Then, adjust the contact element position to align with the measurement target.

Furthermore, calibration procedures depend on the specific amplifier model. For instance, you may need to set the response time to 100 ms to achieve the rated 8 µm repeatability. Besides, confirm that the mounting orientation matches your force requirements. In addition, keep the contact element clean and free from debris to maintain measurement accuracy.

Packaging List

• 1 × Keyence GT-H22L Sensor Head

• 1 × 2-meter Connection Cable (attached)

FAQ

Q1: Does the GT-H22L work without an amplifier?
No. The GT-H22L is a sensor head only. It requires a compatible Keyence GT series amplifier for power supply and signal output.

Q2: What is the difference between GT-H22L and standard GT-H22?
The GT-H22L is the low-stress version. Therefore, it produces significantly lower measuring forces of 0.25–0.35 N compared to the standard model.

Q3: Can I use the GT-H22L for side-mounting applications?
Yes. Side mounting is supported, and the measuring force is approximately 0.3 N in this orientation.

Q4: How do you ship this item?
We ship via Fedex, UPS, DHL with tracking. Delivery times vary by destination and selected service.

Q5: What is the mechanical response time?
The GT-H22L achieves a mechanical response of 5 Hz at 23 °C, suitable for moderate-speed contact measurement tasks.