GT-72AP Keyence Digital Contact Sensor Amplifier Unit
The GT-72AP is a Keyence GT series digital contact sensor amplifier unit. It is built for DIN-rail mounting and works as an expansion unit. Engineers use it for precise position, thickness, and displacement checks on production lines.
This amplifier offers a 1 µm display resolution and a fast 2,000 times/second sampling rate. It supports PNP output with selectable N.O./N.C. logic. The unit fits GT series communication expansions for flexible system integration.
Core position: high-speed digital contact sensing amplifier for automated quality and process control.
Technical Specifications
| Brand | Keyence |
| Model | GT-72AP |
| Series | GT series |
| Type | Digital contact sensor amplifier unit |
| Mounting | DIN-rail mount, expansion unit |
| Display range | -99.999 to 999.999 |
| Display resolution | 1 µm |
| Sampling rate | 2,000 times/second |
| Response time | hsp (1.5 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s, 5 s (selectable) |
| Output type | HIGH/GO/LOW PNP open collector, max. 50 mA (40 V or less), residual voltage 1 V or less, N.O./N.C. selectable |
| Supply voltage | 12 to 24 VDC, ripple (p-p) 10 % or less |
| Power consumption | Normal: 1,140 mW (95 mA) or less at 12 V; 1,200 mW (50 mA) or less at 24 V. Eco: 600 mW (50 mA) or less at 12 V; 840 mW (35 mA) or less at 24 V |
| Built-in ports | None |
| Protocols | None |
| Communication expansion | Via optional GT series communication units (sold separately) |
| Operating temperature | -10 to +55 °C (No freezing) |
| Relative humidity | 35 to 85 % RH (No condensation) |
| Weight | Approx. 110 g (including power cable) |
| Lifecycle | Active; official Keyence production status confirmed (Last verified: 2026-09) |
Measurement range: -99.999 to 999.999. Frequency response: up to 2,000 samples per second. Sensitivity and linearity: stable 1 µm resolution for repeatable contact measurement. Temperature range: -10 to +55 °C. Environmental tolerance: 35 to 85 % RH, no condensation. Noise immunity: designed for industrial DIN-rail cabinets and typical factory electrical noise.
Installation Guide
- Mount the GT-72AP on a standard DIN rail.
- Use it as an expansion unit beside a compatible GT series amplifier.
- Connect 12 to 24 VDC power with low ripple.
- Keep wiring short to reduce electrical noise.
- Check PNP output logic before machine start.
- Set response time to match your process speed.
Setup and Maintenance Convenience
The unit supports selectable response times from 1.5 ms to 5 s. This helps engineers balance speed and stability. The N.O./N.C. output can be changed without extra hardware. Maintenance is simple: check power, verify output, and clean the sensor contact area. No built-in communication port means less setup complexity. Add a GT series communication unit only when network data is needed.
Compatibility Notes
The GT-72AP belongs to the Keyence GT series. It works as an expansion unit with GT series amplifiers. Communication is possible through optional GT series communication units. These units are sold separately. Confirm connector and cable compatibility before ordering. This model has no built-in ports and no built-in protocols.
Certification Information
Keyence confirms the GT-72AP as an active production model. Official product and specification pages list its status. For specific regional certifications, request documents before purchase. Oiltech Controls verifies each unit before shipment.
Packing List
- 1x GT-72AP amplifier unit
- 1x power cable
- Protective packing
- Order and test documents
Warranty and Shipping
Oiltech Controls offers a 12-month warranty on this product. We ship by FedEx, UPS, and DHL. Tracking is provided after dispatch. Contact us for stock, lead time, and shipping cost.
Typical Applications
- Position check on automated assembly lines
- Thickness measurement for parts and sheets
- Displacement verification in fixtures
- Go/No-Go inspection with HIGH/GO/LOW output
- Integration into GT series measurement systems
- Retrofit of legacy contact sensor setups
Diagnostic Capability
The HIGH/GO/LOW PNP output gives fast pass/fail logic. Engineers can monitor output state during machine cycles. The 1 µm resolution helps detect small part variations. Selectable response times help separate real signal from noise. When network diagnostics are needed, add an optional GT series communication unit.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts
- Global shipment support through FedEx, UPS, and DHL
- Tested industrial surplus and refurbished options
- 12-month warranty on eligible products
- Technical verification before shipment
- Support for obsolete control systems
Inquiries: info@oiltechcontrols.com or +86 158 8020 0923
FAQ
Q: What is the GT-72AP?
A: It is a Keyence GT series digital contact sensor amplifier unit. It mounts on a DIN rail and works as an expansion unit.
Q: What is the display resolution?
A: The display resolution is 1 µm.
Q: What is the sampling rate?
A: The sampling rate is 2,000 times/second.
Q: Does it have built-in communication?
A: No. It has no built-in ports or protocols. Add a GT series communication unit for network use.
Q: What output does it provide?
A: It provides HIGH/GO/LOW PNP open collector output. N.O./N.C. is selectable.
Q: What is the supply voltage?
A: The supply voltage is 12 to 24 VDC with low ripple.
Q: What is the operating temperature?
A: The operating temperature is -10 to +55 °C, no freezing.
Q: Is a 12-month warranty included?
A: Yes. Oiltech Controls provides a 12-month warranty on eligible products.
Q: How do you ship?
A: We ship by FedEx, UPS, and DHL. Contact us for details.
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Original Source: https://www.oiltechcontrols.com/
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