High-Accuracy Digital Contact Sensor

GT2 series

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Stylus type Air cylinder type General-purpose Sensor head GT2-PA12

GT2-PA12 - Stylus type Air cylinder type General-purpose Sensor head

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


  • CE Marking




Detection system

Scale Shot System II, absolute (no tracking errors) type

Measuring range

12 mm


0.5 µm

Indicated accuracy

2 µm (p-p)*1

Measuring force

Downward mounting

1.2 N*2

Side mounting

1.15 N*2

Upward mounting

1.1 N*2

Sampling cycle

4 ms

Fluid used

Clean dry air

Operation indicator light

2-colour LED (red, green)

Environmental resistance

Enclosure rating

IP67 (IEC)

Pressure resistance

0.5 MPa

Applied pressure range

0.24 MPa to 0.26 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

Shock resistance

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


Main body

Main body case: SUS 303, Status indicator: PET,
Sensor head-relay connector cable: PUR, Relay connector: PBT,
Spindle: SUS430 (Fluorine coating)


SUS304, SUS440C*3

Sensor head cable

Optional (connect to relay connector)


Approx. 35 g (not including cable)*4

*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. This is a representative value when using the GT2-PA12K/PA12 with a pressure of 0.25 MPa. The measuring force varies depending on the air pressure used. For details, see table 1.
No dust boots are used with the GT2-PA12K/PA12.
*3 Contacts are available as options sold separately.
*4 Including the relay connector.

Data Sheet (PDF) Other Models