
Keyence GT2-100P Digital Contact Sensor Amplifier Installation & Maintenance Guide
Product Introduction
The Keyence GT2-100P amplifier unit serves the GT2 series of high-accuracy digital contact sensors. This panel-mount amplifier features a large 6.5-digit LED display. Furthermore, the unit delivers PNP output signals for industrial control systems. Engineers use the GT2-100P for dimensional measurement and position verification tasks.
Core Value
Firstly, the GT2-100P provides exceptional display resolution of 0.1 μm. This resolution enables precise measurement in quality control applications. In addition, the large display allows operators to read values from a distance. Therefore, the GT2-100P reduces inspection time and improves production efficiency.
Moreover, the amplifier supports expandable channels. Specifically, users can add up to three GT2-E3P expansion boards. This scalability lowers cost per channel for multi-point measurement systems. Besides, the eco power-saving mode cuts consumption to 3,600 mW.
Technical Insights
The GT2-100P operates with 20 to 30 VDC power input. Furthermore, it delivers PNP open collector outputs rated for 30 V and 50 mA. The response time offers six selectable settings. Meanwhile, the eco mode reduces power consumption by approximately 20 percent.
The unit provides five control outputs: HH, HI, GO, LO, and LL. Additionally, it accepts no-voltage control inputs for timing and preset functions. The display range spans from -199.999.9 to 199.999.9.
Installation & Maintenance
Firstly, mount the GT2-100P using the panel mount method or optional screw bracket. Next, connect the power supply to the terminal block. Then, wire the I/O signals to the 20-pin MIL connector.
The unit requires a clean, dry operating environment. Therefore, avoid mounting locations with excessive vibration or temperature extremes. Furthermore, maintain ambient temperature between -10°C and +50°C.
For maintenance, firstly check the display for error indicators. Next, verify power supply voltage remains within specification. Besides, inspect the connector pins for corrosion or damage. Clean the display surface with a soft, dry cloth.

Buyer‘s Guide FAQ
Q1: What sensor heads work with the Keyence GT2-100P?
The GT2-100P supports GT2 series contact sensor heads. Moreover, it accepts standard and high-precision probe models.
Q2: How many expansion units can connect to the GT2-100P?
Users can add up to three GT2-E3P expansion boards. Therefore, the system expands to a maximum of 11 channels.
Q3: What output type does the GT2-100P provide?
The unit delivers PNP open collector outputs. Furthermore, each output handles 30 V and 50 mA maximum.
Q4: What is the display resolution of the GT2-100P?
The amplifier achieves 0.1 μm display resolution. Besides, the 6.5-digit LED display ensures clear readability.
Q5: Can the GT2-100P operate in power-saving mode?
Yes, the eco mode reduces power consumption to 3,600 mW. Specifically, this saves energy during continuous operation.











