High-Accuracy Digital Contact Sensor

GT2 series

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Sensor Head, Air Cylinder Model GT2-A50

GT2-A50 - Sensor Head, Air Cylinder Model

*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

Quartz glass scale, CMOS image sensor projection system, Absolute type (without tracking error)

Measuring range

50 mm 1.97"


0.5 μm 0.02 Mil

Indicated accuracy

3.5 µm 0.14 Mil (p-p)*1

Measuring force

Downward mounting

3.2 N*2

Side mounting

2.8 N*2

Upward mounting

2.4 N*2

Sampling cycle

1 ms

Operation indicator light

2-color LED (red, green)

Environmental resistance

Enclosure rating


Pressure resistance

1 MPa

Applied pressure range

0.25 to 0.5 MPa

Ambient temperature

0 to +55 °C 32 to 131 °F (No freezing)

Relative humidity

35 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*4


Main body

Main body case: Zinc die-casting; Cylinder part: Aluminium alloy;
Air joint resin part: Polyacetal; Air joint metal part: Brass nickel plating; Indicator: Polyarylate

Dust boot



TYPE304, 440C Stainless steel*5

Sensor head cable

Optional (connect to the M8 connector)


Approx. 405 g (excluding cable)

*1 Value when the ambient temperature is 20 °C 68 °F.
*2 Value at center of measuring range. Please note that the measurement force changes depending on the installation state of the dust boots.
*3 Make sure the air tube is connected to the air exhaust joint and that no foreign materials enter inside from the joint.
*4 In the case where a mounting bracket D is used with GT2-A32 and GT2-A50, the double amplitude becomes 0.75 mm 0.03".
*5 The contact is included with the sensor.

Data Sheet (PDF) Other Models