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

  • CE Marking




Detection system

Scale Shot System, absolute (no tracking errors) type

Measuring range

50 mm


0.5 μm

Indicated accuracy

3.5 µm (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

Fluid used

Dry air

Operation indicator light

2-colour LED (red, green)

Environmental resistance

Enclosure rating

IP67 (IEC)*3

Pressure resistance

1 MPa

Applied pressure range

0.25 MPa to 0.50 MPa

Ambient temperature

0 to +55 °C (No freezing)

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm, 2 hours in each of the X, Y, and Z directions*4


Main body

Main body case: die-cast zinc, Cylinder section: aluminium alloy, Air joint resin: polyacetal, Air joint metal: nickel-plated brass, Indicator: polyarylate (PAR)

Dust boot



SUS304, SUS440C*5

Sensor head cable

Optional (connect to the M8 connector)


Approx. 405 g (not including cable)

*1 Value when the ambient temperature is 20 °C.
*2 Representative value at the centre of the measuring range. Please note that the measuring force varies by the installation state of the dust boot.
*3 Connect an exhaust joint to the air tube and ensure that foreign matter does not enter the tube from joint.
*4 When using mounting bracket D (OP-84327), the double amplitude is 0.75 mm.
*5 Contacts are available as options sold separately.

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