GT2-PA12K High-Accuracy Digital Contact Sensor Head by Keyence
The GT2-PA12K is a pencil-type contact sensor head from the Keyence GT2 series. It uses the Scale Shot System with absolute detection. There is no tracking error. The 12 mm stroke suits small displacement checks. The 0.1 µm resolution and 1 µm accuracy support precise position feedback. It connects to a GT2 amplifier through an M8 connector.
This sensor head fits inline measurement, thickness checks, press-fit control, and automated inspection. It is IP67 rated. It works from 0 to +55 °C. The 1 ms sampling cycle and 10 Hz mechanical response give stable data for fast production lines.
Technical Specifications
| Brand | Keyence |
| Model | GT2-PA12K |
| Series | GT2 series |
| Product Type | Digital contact sensor head, pencil type |
| Detection System | Scale Shot System, absolute type |
| Measuring Range | 12 mm |
| Resolution | 0.1 µm |
| Indicated Accuracy | 1 µm (p-p) |
| Measuring Force | 0.2 N (downward mounting) |
| Sampling Cycle | 1 ms |
| Mechanical Response | 10 Hz at 20 °C |
| Operation Indicator | 2-colour LED, red and green |
| Built-in Ports | None |
| Protocols | None |
| Communication Expansion | None |
| Supply Voltage | Powered by GT2 series amplifier |
| Power Consumption | Not applicable |
| Output Type | Sensor head; connects to GT2 amplifier via M8 connector |
| Operating Temperature | 0 to +55 °C, no freezing |
| Storage Temperature | Not available |
| Relative Humidity | 35 to 85 % RH, no condensation |
| Protection Rating | IP67 (IEC) |
| Dimensions | Not available |
| Weight | Approx. 35 g, not including cable, including relay connector |
| Lifecycle Status | Active; Keyence production status confirmed |
Installation Guide
- Mount the GT2-PA12K on a rigid fixture. Keep the stroke axis aligned with the target.
- Use the M8 connector to link the head to a GT2 amplifier.
- Respect the 0.2 N measuring force for downward mounting. Avoid side load on the plunger.
- Keep the IP67 seal clean. Do not damage the cable or connector.
- Operate within 0 to +55 °C and 35 to 85 % RH. Avoid condensation.
Setup and Maintenance
- Zero the amplifier after mounting. Confirm the 12 mm stroke covers the full travel.
- Check the 2-colour LED for red or green status. Use it for quick pass/fail checks.
- Clean the contact tip with a soft cloth. Do not use solvent on the sensor body.
- Inspect the M8 connector for tight fit. Loose contacts cause signal noise.
- Recalibrate after a crash or tip replacement. This keeps 1 µm accuracy stable.
Compatibility
The GT2-PA12K is compatible with Keyence GT2 series amplifiers. It does not have built-in ports or protocols. All signal conversion happens in the amplifier. Use the correct M8 cable and amplifier model for your setup. This head is not a stand-alone device.
Certifications and Packaging
- Protection rating: IP67 (IEC)
- Operating temperature: 0 to +55 °C
- Humidity: 35 to 85 % RH, no condensation
- Packaging: 1 x GT2-PA12K sensor head, relay connector, and basic documentation
- Warranty: 12 months
Shipping and Support
We ship by FedEx, UPS, and DHL. Tracking is provided after dispatch. Contact us for stock, lead time, and shipping options.
Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923
Typical Applications
- Inline dimensional inspection on automated lines
- Thickness and gap measurement for small parts
- Press-fit depth control in assembly cells
- Position feedback on compact fixtures
- Quality gates for high-volume production
Diagnostic Capabilities
The 2-colour LED shows sensor status at a glance. The amplifier adds detailed diagnostics. Use it to check signal level, tolerance limits, and error states. The absolute Scale Shot System removes tracking error after power loss. This helps fault finding on busy lines.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts
- Global shipment support
- Tested industrial surplus and refurbished options
- 12-month warranty
- Technical verification before shipment
- Support for obsolete control systems
FAQ
Q: Is the GT2-PA12K a stand-alone sensor?
A: No. It needs a GT2 series amplifier to work.
Q: What is the resolution?
A: The resolution is 0.1 µm.
Q: What is the measuring range?
A: The range is 12 mm.
Q: How fast is the sampling?
A: The sampling cycle is 1 ms.
Q: Is it water resistant?
A: Yes. It has an IP67 rating.
Q: What is the warranty?
A: We offer a 12-month warranty.
Q: How do you ship?
A: We ship by FedEx, UPS, and DHL.
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Original Source: https://www.oiltechcontrols.com/
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