GT-71A Keyence General Purpose Digital Contact Sensor

The Keyence GT-71A is a high-accuracy amplifier unit for digital contact sensors, designed to deliver precise measurement, high-speed processing, and versatile output control. With a large LED display, selectable response times, and energy-saving features, it is ideal for automation and inspection environments requiring reliable displacement feedback.

Technical Specifications

Model: GT71A
Type: Amplifier Unit
Mounting: DIN Rail
Output: NPN Open Collector
Weight: Approx. 110 g (Incl. Cable)

Power & Electrical Specs

• Power Supply Voltage: 12–24 VDC ±10% (P-P Ripple ≤ 10%)
• Power Consumption:
  • Normal Mode:
    • 12V: ≤ 1,140 mW (95 mA)
    • 24V: ≤ 1,200 mW (50 mA)
  • Eco Mode:
    • 12V: ≤ 600 mW (50 mA)
    • 24V: ≤ 840 mW (35 mA)

Display & Measurement

• Main Display: 6-Digit 7-Segment LED (Red)
• Bar Display: 13-Level Dual-Colour LED (Red/Green)
• Display Range: -99.999 to 999.999
• Resolution: 1 μm
• Sampling Rate: 2000 times/sec

Control Input & Output

• Control Input Functions: Timing, Preset, Bank Select
  • Timing Input: 2 ms min
  • Preset/Bank Input: 20 ms min
• Response Times: Selectable – 1.5 ms, 5 ms, 10 ms, 100 ms, 500 ms, 1 s, 5 s
• Output:
  • NPN Open Collector (HIGH / GO / LOW)
  • Max Load: 50 mA (40 VDC Max)
  • Residual Voltage: ≤ 1 V
  • N.O. / N.C. Switchable

Functions & Features

• Preset & Hold Modes
• Variable Hysteresis & Response
• 4-Bank Function
• Power Save Mode
• Calibration
• Multiplier Setting
• Self-Timing & Application Modes
• Core Alarm Detection

Environmental Resistance

• Ambient Temperature: -10°C to +55°C
• Humidity: 35% to 85% RH (No Condensation)
• Vibration Resistance: 10–55 Hz, Double Amplitude 1.5 mm, 2 hr in X, Y, Z Directions

Materials & Construction

• Body: Polycarbonate
• Key Top: Polyacetal
• Front Sheet: Polycarbonate
• Cable: PVC
• Included: Instruction Manual

Key Features & Benefits:

✅ High-Speed Sampling: 2,000 times per second for real-time precision.

✅ Multi-Mode Display: LED & bar indicators provide clear measurement feedback.

✅ Flexible Output Control: Configurable NPN outputs for HIGH/GO/LOW logic.

✅ Advanced Measurement Functions: Calibration, bank switching, preset, and hold.

✅ Compact & Durable: Industrial-grade build with vibration resistance.

✅ Energy Efficient: Eco power mode for reduced long-term consumption.

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At Drive Outlet Megastore, we offer the best GT-71A prices, with same-day and next-day shipping across the UK & Europe.

Need expert help choosing the right amplifier or sensor setup? Contact us via Drive Outlet Megastore for specialist support and quick response quotes.