GT-H22L Keyence Digital Contact Sensor Head | GT Series Low-Stress LVDT Probe
GT-H22L is a low-stress digital contact sensor head from the Keyence GT series. It uses LVDT technology for stable displacement measurement. The 22 mm stroke suits small-stroke inspection and positioning tasks. A light measuring force protects soft or delicate parts. Because of this, the sensor head connects to a GT series amplifier for power and signal conditioning. It has no built-in communication port. As a result, the head stays compact and rugged for machine integration.
Engineers choose the GT-H22L for repeatable contact measurement in automated lines. It works well in fixtures, press-fit checks, and thickness gauging. Moreover, the low-stress design reduces part deformation and marks. The 8 µm repeatability supports consistent pass or fail decisions. In addition, the 5 Hz mechanical response fits slow to medium speed processes. The head operates from -10 to +55 °C. Also, it tolerates 35 to 85 % RH without condensation.
Technical Specifications
| Brand | Keyence |
| Model | GT-H22L |
| Series | GT series |
| Module type | Digital contact sensor head |
| Sensor technology | LVDT displacement sensor |
| Type | Low-stress |
| Measuring range | 22 mm |
| Measuring force, downward | 0.35 N |
| Measuring force, side | 0.3 N |
| Measuring force, upward | 0.25 N |
| Mechanical response | 5 Hz at 23 °C |
| Repeatability | 8 µm at 23 °C, response 100 ms |
| Built-in ports | None |
| Protocols | None |
| Communication expansion | None |
| Supply voltage | Powered by GT series amplifier |
| Power consumption | Not available |
| Output type | Sensor head, connects to GT amplifier |
| Operating temperature | -10 to +55 °C, no freezing |
| Storage temperature | Not available |
| Relative humidity | 35 to 85 % RH, no condensation |
| Protection rating | Not available |
| Dimensions (H×W×D) | Not available |
| Weight | Approx. 135 g with 2 m cable |
| Lifecycle | Active, official Keyence production confirmed |
Key parameters at a glance:
- Measuring range: 22 mm for small to medium stroke checks
- Frequency response: 5 Hz mechanical response at 23 °C
- Sensitivity: set by the paired GT series amplifier
- Linearity: follows the GT amplifier specification
- Resolution: depends on amplifier settings and response time
- Repeatability: 8 µm at 23 °C with 100 ms response
- Temperature range: -10 to +55 °C operating
- Environmental tolerance: 35 to 85 % RH, no condensation
- Noise immunity: LVDT design resists common factory noise
Installation Guide
Mount the GT-H22L on a rigid bracket. Keep the probe axis aligned with the measured surface. Use the correct orientation for your force limit. Downward mounting gives 0.35 N. Side mounting gives 0.3 N. Upward mounting gives 0.25 N. Tighten the mounting points evenly. Also, avoid bending the cable near the head. Then connect the cable to a compatible GT series amplifier. Power comes from the amplifier, not from a separate supply. After that, check zero position after mounting. Run a slow test cycle before full production. Keep the probe tip clean and free of chips. Finally, protect the cable from sharp edges and moving parts.
Setup and Maintenance
Setup is simple when the head pairs with a GT amplifier. Adjust response time in the amplifier menu. Use 100 ms response for the stated 8 µm repeatability. For more stable readings, use a slower response. Use a faster response only when the process needs it. Clean the contact tip with a soft cloth. Do not use solvent on the sensor body. Moreover, check cable strain relief at each service interval. Replace the head if repeatability drifts after zeroing. In addition, keep spare heads for critical lines to reduce downtime.
Compatibility
The GT-H22L is a sensor head only. It needs a Keyence GT series amplifier for power and signal output. It has no built-in port and no communication protocol. Therefore, it does not connect directly to a PLC or network. Match the head to the correct GT amplifier model. Confirm amplifier input type before ordering. The 2 m cable is part of the head assembly. Extension cables may affect performance if not approved. For amplifier pairing help, contact us.
Certification and Quality
Keyence confirms active production status for the GT-H22L. We verify each unit before shipment. Our team checks appearance, cable, and basic function. We test industrial surplus and refurbished options where available. We share test results on request. Certification details depend on the exact unit and batch. So ask us for available documents before purchase.
Packing List
- 1 × Keyence GT-H22L sensor head
- 1 × attached 2 m cable
- Protective packing for transport
- Order and test documents as agreed
Warranty and Shipping
Every order includes a 12-month warranty. The warranty covers confirmed functional defects. It does not cover misuse, wrong wiring, or physical damage. We ship by FedEx, UPS, and DHL. Tracking is provided after dispatch. Delivery time depends on destination and customs. We pack each unit for safe transport. For urgent line-down cases, contact us.
Typical Applications
- Thickness inspection on soft parts
- Press-fit depth checks
- Fixture position confirmation
- Small-stroke displacement measurement
- Go or no-go gauging on assembly lines
- Glass, film, and rubber thickness checks
- Obsolete control system support
Diagnostic Capability
The head sends displacement data to the GT amplifier. The amplifier handles judgment, scaling, and output. This split design helps fault finding. If readings drift, check the probe tip first. Then check cable damage and connector seating. After that, check amplifier settings and zero point. A known-good head can confirm amplifier health. A known-good amplifier can confirm head health. Therefore, this method cuts diagnosis time on live machines.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts
- Worldwide shipping support
- Tested industrial surplus and refurbished options
- 12-month warranty on every order
- Technical verification before shipment
- Support for obsolete control systems
Need a quote or a compatibility check? Email us at info@oiltechcontrols.com. Chat with us on WhatsApp at +86 158 8020 0923. Send your amplifier model and machine details. Then we will confirm the right GT-H22L setup for your line.
FAQ
Q: What is the GT-H22L?
A: It is a Keyence GT series digital contact sensor head. It uses LVDT technology. It has a 22 mm stroke.
Q: Does the GT-H22L work alone?
A: No. It needs a Keyence GT series amplifier. The amplifier supplies power and reads the signal.
Q: What is the measuring range?
A: The measuring range is 22 mm.
Q: What is the repeatability?
A: It is 8 µm at 23 °C with 100 ms response.
Q: What is the mechanical response?
A: It is 5 Hz at 23 °C.
Q: What is the measuring force?
A: It is 0.35 N downward, 0.3 N side, and 0.25 N upward.
Q: What is the operating temperature?
A: It is -10 to +55 °C with no freezing.
Q: Does it have a communication port?
A: No. It has no built-in port and no protocol.
Q: How do you ship?
A: We ship by FedEx, UPS, and DHL. We provide tracking after dispatch.
Q: What warranty do you offer?
A: We offer a 12-month warranty on every order.
Q: Can you support obsolete systems?
A: Yes. We support obsolete control systems and hard-to-find parts.
Q: How do I confirm compatibility?
A: Send your amplifier model to info@oiltechcontrols.com. Then we will verify it for you.
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Original Source: https://www.oiltechcontrols.com/
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