High-Accuracy Digital Contact Sensor

GT2 series

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Sensor head: Short-range pencil type GT2-S1

GT2-S1 - Sensor head: Short-range pencil type

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

Data Sheet (PDF)


CAD Data

360°view (3D PDF)


  • CE Marking




Detection system

Differential transformer

Measuring range

1 mm 0.04"*2

Operating range

2 mm 0.08"*2


0.1 µm

Indicated accuracy

1 µm (P-P)*3*4

Measuring force

Downward mounting

1.12 N*5

Side mounting

1.1 N*5

Upward mounting

1.08 N*5

Sampling cycle

1 ms

Mechanical response

40 Hz*4

Operation indicator light

2-color LED (red, green)

Environmental resistance

Enclosure rating

IP67G (JIS)*6, IP67 (IEC)

Ambient temperature

-10 to +55 °C 14 to 131 °F (No freezing)

Relative humidity

10 to 85 % RH (No condensation)

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions

Shock resistance

1,000 m/s2 (IEC60068-2-27)


Main body

Main body case: SUS440C, Sensor head-relay connector cable: PUR, Relay amplifier: PPSU

Dust boot



SUS304, cemented tungsten carbide*7

Sensor head cable

Optional (connect to relay connector)


Approx. 30 g (not including cable)*8

*1 Note: You may not be able to connect the sensor head to the amplifier unit depending on when the amplifier unit was purchased. For details, contact your local sales office.
*2 The measuring range represents the range at which measured values can be displayed. The operating range is the actual movable range of the spindle.
*3 Within ±0.15 mm 0.006" from the center of the measuring range, the width for any 0.1 mm 0.004" is 1 µm. The entire area is 2 µm.
The linearity for the entire measuring range is ±0.15 % of F.S. (F.S.: 1 mm 0.04")
*4 Value when the ambient temperature is 20 °C 68 °F.
*5 Representative value at the center of the measuring range. Please note that the measuring force varies depending on the installation orientation of the dust boot.
*6 When an M8 oil-resistant cable (GT2-CHP2M/CHP5M/CHP10M) is used for the sensor head cable.
*7 Contacts are available as options sold separately.
*8 Including the relay connector.

Data Sheet (PDF) Other Models