Keyence GT2-71MCN High-Accuracy Digital Contact Sensor Amplifier
Keyence GT2-71MCN is a high-accuracy digital contact sensor amplifier unit. It mounts on a DIN rail. It works as an NPN multi-head main unit. The unit reads tiny displacement changes with 0.1 µm display resolution. It suits inline measurement, position checking, and automated inspection. The GT2 series supports flexible head options and fast response settings.
This amplifier offers a wide display range. It gives stable readings in industrial environments. You can add communication units later. This keeps your system ready for data collection. The GT2-71MCN is a practical choice for engineers who need repeatable contact measurement.
Technical Specifications
| Brand | Keyence |
| Model | GT2-71MCN |
| Series | GT2 series |
| Type | High-accuracy digital contact sensor amplifier unit |
| Mounting | DIN-rail mount, main unit, multi-head |
| Display Range | -199.999.9 to 199.999.9 |
| Resolution | 0.1 µm |
| Response Time | hsp(3)/5/10/100/500/1,000 ms |
| Response Time with GT2-Pxxx Heads | hsp(12)/20/40/400/2,000/4,000 ms |
| Control Input | Timing, preset, reset, bank no-voltage input |
| Built-in Ports | None |
| Protocols | None |
| Communication Expansion | Via optional GT2 series communication units, sold separately |
| Supply Voltage | 10 to 30 VDC, ripple p-p 10 percent included, Class 2 |
| Power Consumption | 2,700 mW or less, 90.0 mA or less at 30 V |
| Output Type | HH/HI/GO/LO/LL NPN open collector, 40 V / 50 mA or less, residual voltage 1 V or less |
| Analog Output | 4 to 20 mA, max. load resistance 350 Ω |
| Operating Temperature | -10 to +50 °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. 140 g, including power cable |
| Lifecycle | Active. Official Keyence production status confirmed. Last verified: 2026-09. |
Key Performance Points
- Measuring range: Wide digital display range for fine displacement checks.
- Frequency response: Fast response from hsp(3) ms to 1,000 ms. GT2-Pxxx heads extend to 4,000 ms.
- Sensitivity: High-accuracy contact sensing with 0.1 µm resolution.
- Linearity: Stable readings across the full display range.
- Resolution: 0.1 µm for small step changes.
- Temperature range: -10 to +50 °C operating.
- Environmental tolerance: 35 to 85 % RH, no condensation.
- Noise immunity: NPN open collector outputs with low residual voltage.
Installation Guide
Mount the GT2-71MCN on a standard DIN rail. Keep the unit away from heat sources. Use the specified 10 to 30 VDC supply. Connect the no-voltage control inputs for timing, preset, reset, and bank selection. Wire the NPN outputs to your PLC or controller. Use the 4 to 20 mA analog output for remote monitoring. Add optional GT2 communication units if you need data links.
Setup and Maintenance
- Set response time to match your cycle speed.
- Use preset and reset inputs for quick zeroing.
- Check wiring before power-on.
- Keep the unit dry and free from condensation.
- Clean the display area with a soft dry cloth.
- Verify output operation during regular service.
Compatibility Notes
The GT2-71MCN works with GT2 series heads. It supports GT2-Pxxx heads with extended response times. Communication is not built in. You can add optional GT2 communication units. This amplifier fits NPN control systems. It also works with common industrial PLCs and panel meters.
Certifications and Compliance
Certification details are not listed in the current source data. Please confirm with Keyence or Oiltech Controls before purchase. The unit follows standard industrial use requirements for the GT2 series.
Packing List
- Keyence GT2-71MCN amplifier unit
- Power cable
- Protective packaging
Warranty and Shipping
Oiltech Controls offers a 12-month warranty. We ship by FedEx, UPS, and DHL. We test and verify each unit before shipment.
Typical Applications
- Inline displacement measurement
- Position checking on automation lines
- Thickness and step inspection
- Go and no-go part sorting
- Obsolete control system support
- Quality gate checks
Diagnostic Capability
The GT2-71MCN gives clear HH, HI, GO, LO, and LL output states. These states help you find out-of-tolerance parts fast. The digital display shows live readings. The analog output supports trend monitoring. You can use preset and reset inputs to isolate faults. This makes troubleshooting simple on the line.
FAQ
Q: Does the GT2-71MCN have built-in communication?
A: No. You can add optional GT2 series communication units.
Q: What is the display resolution?
A: The resolution is 0.1 µm.
Q: What output type does it use?
A: It uses NPN open collector outputs.
Q: What is the operating temperature?
A: The range is -10 to +50 °C.
Q: Is the GT2-71MCN active?
A: Yes. Keyence confirms active production status as of 2026-09.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support for hard-to-find parts.
- Tested industrial surplus and refurbished options.
- 12-month warranty on eligible products.
- Technical verification before shipment.
- Support for obsolete control systems.
Contact us for inquiries: info@oiltechcontrols.com or +86 158 8020 0923.
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
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