High-Accuracy Digital Contact Sensor

GT2 Series

Unsurpassed
Accuracy
and
Durability

I- SERIES
Air push type I n t e l l i g e n t s en sor

Debut!!

GT2 Series
2
 SCALE SHOT SYSTEM II
Display resolution 0.1 μm

Accuracy 1 μm

The ø8 mm sensor head is equipped with KEYENCE’s proprietary Scale Shot System II, which allows it to achieve the
highest accuracy in its class throughout its entire measurement range. It also overcomes the disadvantages of
conventional methods such as tracking errors and not knowing absolute position.

TOUGH & RUGGED CONSTRUCTION

NEMA Type 13/IP67G

100 million cycles detecting durability

PUR cable

Complies with NEMA Type 13/IP67G oil resistance protection standards. These sensor heads can be used in wet and
dusty environments, and now even in environments with splashing oil. The sensor head also clears a detecting
durability of 100 million cycles with its long lasting linear ball bearings.

MULTI-SENSOR UNIT
5 heads can connect to 1 amplifier unit

A multi-sensor amplifier unit has been added to our line up which allows up to 5 sensor heads to connect to 1 amplifier
unit. A maximum of 3 amplifier units and 15 sensor heads can be simultaneously connected to support multi-point
applications. Also, larger systems can easily be constructed using the communication units.

3
 Scale Shot System II:
A new detection
principle completely
free of tracking errors
CMOS sensor detects
The absolute value scale, with different slit patterns
the position of the
engraved according to position, is captured at
absolute value scale.
high speed with a high-resolution CMOS sensor.
This world’s first detection principle delivers
the highest accuracy in its class with no tracking
errors during high-speed movement.

Highest accuracy in its class

DISPLAY RESOLUTION

0.1 μm

ACCURACY

1 μm

4
 PROBLEM S WI T H CO NVE NT I ONA L T Y PE S

SCALE (PULSE-COUNT) METHOD DIFFERENTIAL TRANSFORMER METHOD

Magnetic pulse counting method Optical pulse counting method

Position is detected from
Pulse counting is performed using both Pulse counting is performed using Correction coil the resistance value obtained from
the north and south poles of the magnetic a light source emitting through the the positional change in the coil
field. slits of the scale to a light receiving and core.
Sensing coil
element.
Slit
Light

Signal level
Scale Magnetic
sensing
S element
Scale Core
N

Unstable accuracy
Origin position Poor temperature
Tracking errors throughout entire
unknown characteristics
measuring range

RESOLVED WITH THE SCALE SHOT SYSTEM II

Stable
Origin position Full-range
No tracking error temperature
recorded high accuracy
characteristics

Technology of the Scale Shot System II ø8 mm

This innovative system was created based on KEYENCE’s High-resolution

CMOS
newly developed technology. High-intensity illumination from Absolute value
glass scale
HL-LEDs reliably emits light through the absolute value scale
to a high resolution CMOS. Output signals are calculated by
the I-Processor, which allows for constant position recognition.
All these features are integrated into a slim 8-mm diameter
body.

These newly developed point light source LEDs provide

even, high-intensity illumination which is 9 times more
HL-L E D intense than conventional models. HL-LED
*HL: High Luminance

With high sensitivity, this imaging element receives the

HIGH-RESOLUTION LED light that passes through the absolute value glass
scale and generates output signals with resolution twice
CMOS
that of conventional models.

This customised IC is equipped with a new algorithm that

I-PROCE SSO R performs high-speed, high-resolution calculation of the
output signals transmitted from the CMOS sensor.

5
 H IG H E N V I R ON MENTAL R ES IS TANCE

USABLE IN OILY
ENVIRONMENTS *GT2-P12K(F)/P12(F)

First in class

NEMA Type 13/IP67G

The sensor head, including the connector and cable section, complies
with two standards - NEMA Type 13 and IP67G. The sensor head can be
mounted almost anywhere, even in environments with splashing water
or oil.

❚ Oil-resistant connector and cable

Both the sensor head and connector comply with NEMA Type 13/IP67G.
Extremely oil-resistant PUR (polyurethane) is used for the GT2-sensor
cable to reduce the risk of oil penetration.

❚ Seamless construction
The sensor body is cast in one piece for seamless outer construction.
Corrosion from water and oil is reduced due to the fully enclosed structure.

NEMA Type 13
NEMA (National Electrical Manufacturers Association) specifies the classification and
description of enclosures for electrical equipment. The classification is represented
as the “Type”, and NEMA Type 13 is designed to provide a degree of protection
against the ingress of oil.

IP67G
IP67G represents the enclosure rating for electronic devices as defined by the
JIS (Japanese Industrial Standards). IP67G represents “IP67” as defined by the
IEC (International Electrotechnical Commission) with “G” added for its oil resistance.

6
 H I GH E N DU R ANC E

EXTRAORDINARY DETECTING DURABILITY

100 million cycles *GT2-P12K(L/F)/P12(L/F)

A detecting durability of 100 million cycles has been achieved by using new high-strength linear ball bearings in the spindle.
This can greatly reduce maintenance costs and replacement efforts.

❚ Long lasting linear ball bearings

The all stainless steel construction of the spindle structure (shaft &
bearings) reduced the weight of the GT2. Through these weight
savings, wear due to friction inside the spindle has been minimised.
This has dramatically increased endurance.

Linear ball
bearing used

FLEXIBLE FREE-CUT ROBOT CABLE & OIL-RESISTANT RELAY CONNECTOR

The cable between the relay connector and amplifier unit uses a flexible free-cut robot cable that withstands continuous
bending. This allows the sensor to be installed on moving equipment. A detachable relay connector system is also used.
This can greatly reduce replacement work during maintenance.

❚ Flexible free-cut robot cable ❚ Detachable sensor head cable

Withstands bending 20 million times
without breaking (Typical usage)

Load: 250 g 90°

Bend radius: 50 mm
Bending rate: 30 times/minute
(1 time includes left to right to original position)

FREE CUT! R

7
 S Y STE M C ON FIGU R ATIO N

SAVE WIRING TIME WITH OPEN FIELD NETWORK SUPPORT

ASSEMBLY EQUIPMENT INSPECTION EQUIPMENT

The GT2 Series supports various networks with its

lineup of communication units.

❚ DL Series lineup

EtherNet/IPTM DL-EP1

DeviceNetTM DL-DN1
OPEN FIELD NETWORK

PROFINET DL-PN1
COMMUNICATIONS

PROFIBUS DL-PD1

CC-Link DL-CL1

RS-232C DL-RS1A
communication

BCD output DL-RB1A

8
❚ Batch read and change settings for multiple amplifier units
Batch transmit data for a maximum of 15 units.
Open field
Settings can also be changed from a PC or PLC which network
leads to reduced setup time.

❚ Further wiring and space savings with the multi-sensor unit

Up to 5 sensor heads can be connected to

1 multi-sensor amplifier unit. Up to 3 units
can be linked, which allows for a maximum
of 15 connected sensor heads.

❚ Reduced wiring and installation

When more units are used in combination with each other, more wiring is required.
If communicating with the DL Series, this unit will send data to the PLC and only two wires are required to supply power
to the main unit.

Reduce cable fabrication work

Reduce work wiring into terminal blocks

This portion of the wiring is unnecessary

No terminal blocks required

9
 E ASE O F U SE

COST REDUCING MOUNTING METHODS

❚ Greatly reduces design and fabrication time

The sensor can be mounted almost anywhere thanks to ø8 mm slim body that can be mounted anywhere along its body.
If you use one of the dedicated brackets, you do not need to fabricate a slotted jig. The flange type can also be directly
mounted by simply drilling a ø10 mm hole.

CONVENTIONAL GT2

Bracket mounting Flange type

Mountable
throughout
full range

A slotted jig must be

When using mounting bracket F
fabricated and mounted. Simply drill a ø10 mm hole.
* The flange type combines the sensor head and the bracket.

❚ Air push type requires no drive mechanism

Measurements can be performed with the sensor head secured in place, so no mechanism is required to move the sensor
head itself. This allows for space-saving installation which can greatly reduce costs at initial setup. Plus any worries about
variations in accuracy due to the jig are eliminated.

THE AIR PUSH TYPE USES AIR TO EXTEND THE SPINDLE

Outside diameter
CONVENTIONAL METHOD GT2 AIR PUSH TYPE
ø4
Inside diameter
Linear guide
ø2.5
Air tube Slotted jig
Stopper

No jig required
Spindle

10
REDUCE COSTS WITH MULTI-FUNCTION AMPLIFIER UNITS

❚ Simple calculations
A variety of detection modes are standard.
Calculations between additional amplifier units can be easily configured simply by selecting the desired mode.

Thickness [SHAFT DIAMETER MEASUREMENT]

Positioning the target between two sensor heads will display the outer diameter.

Main unit Expansion unit Calculation result

Degree of [FLATNESS CHECK]

flatness By subtracting the minimum value from the maximum value the flatness will be displayed.

Main unit Expansion unit Expansion unit Expansion unit

Calculation result

Maximum value Minimum value

VERSATILE DETECTION MODES SUPPORT ALL APPLICATIONS

SINGLE HEAD MULTIPLE HEADS/when additional amplifier units are installed (application modes)
Degree of Reference
STD P-H B-H P-P Maximum Minimum Average Twist Warpage Thickness
flatness difference

Standard Peak hold Bottom hold Peak to peak

❚ Total cost reductions

PLC programming or an analogue input card, which was required with LVDTs, is no longer necessary.
This leads to cost reductions.

CONVENTIONAL METHOD GT2 SOLUTION

+ EASY WAY + = Done

Display

= Done

+ + =
EASY WAY + Done
Analogue card PLC programming

11
 SEN S O R HEAD L I N E U P
Select the sensor head by measuring range, appearance, resolution, accuracy, mounting method, and measuring force

Pencil type

Measuring Standard Flange Air push

Accuracy
range Standard Low stress Standard Standard

GT2-P12K GT2-P12KL GT2-P12KF GT2-PA12K

High-accuracy

Resolution 0.1 μm
Accuracy 1 μm

12 mm
GT2-P12 GT2-P12L GT2-P12F GT2-PA12

General-purpose

Resolution 0.5 μm
Accuracy 2 μm

Sensor head cable Select by the distance between the sensor head and the amplifier unit, the environment, and the mounting method

Oil-resistant cable (straight)*1 Standard cable (straight) Standard cable (L-shaped)*2

GT2-CHP2M 2m GT2-CH2M 2m GT2-CHL2M 2m

GT2-CHP5M 5m GT2-CH5M 5m GT2-CHL5M 5m

GT2-CHP10M 10 m GT2-CH10M 10 m GT2-CHL10M 10 m

GT2-CH20M 20 m GT2-CHL20M 20 m

*1 To satisfy NEMA Type 13/IP67G with GT2-P12(K)(F), the oil-resistant cable must be used.
*2 Can only be used with the 12 mm type.

12
Box type

Measuring Standard Flange Air push

Accuracy
range Standard Low stress Standard Low stress Standard Low stress

GT2-H12K GT2-H12KL GT2-H12KF GT2-H12KLF GT2-A12K GT2-A12KL

High-accuracy

Resolution 0.1 μm
Accuracy 1 μm

12 mm
GT2-H12 GT2-H12L GT2-H12F GT2-H12LF GT2-A12 GT2-A12L

General-purpose

Resolution 0.5 μm
Accuracy 2 μm

GT2-H32 GT2-H32L GT2-A32

General-purpose
32 mm - - -
Resolution 0.5 μm
Accuracy 3 μm

GT2-H50 GT2-A50

General-purpose
50 mm - - - -
Resolution 0.5 μm
Accuracy 3.5 μm

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 AMP L I F I ER U NI T L I N E U P
Select according to the output method, mounting method, and number of connected units

Amplifier unit type Appearance/model

DIN-rail mount type Panel mount type 5-output function

Judges the 5 statuses HH/High/Go/Low/LL
Bank function
Registers limit setting values and preset values in up to 4 different groups
Calculation functions using expansion units
Enables calculations such as maximum value, minimum value, and degree
of flatness
Judgement output
(5 outputs)
Loose wire Connector Panel

NPN GT2-71N GT2-71CN GT2-75N

Main unit
PNP GT2-71P GT2-71CP GT2-75P
NPN GT2-72N GT2-72CN GT2-76N
Connector type Expansion unit
PNP GT2-72P GT2-72CP GT2-76P

DIN-rail mount type

3-output function
Judges the 3 statuses High/Go/Low
Bank function
Registers limit setting values and preset values in up to 4 different groups
Calculation functions using expansion units
Analogue output
Enables calculations such as maximum value, minimum value, and degree
(4 to 20 mA) of flatness

Connector
NPN GT2-71MCN
Connector type Main unit
PNP GT2-71MCP

DIN-rail mount type

Minimum phase difference selection

[0.5/2.5/5/25 μs]
Capable of batch output of position information.
Pulse output
Loose wire
Increment/decrement direction
Main unit NPN GT2-71D
Pulse output resolution
Minimum phase difference

Panel mount type

Easy operation with a large display and buttons.
Up to 11 sensor heads can be connected using the expansion board.
* With only the main body, up to 2 sensor heads can be connected

Connector
Large display
NPN GT2-100N
Main body
PNP GT2-100P
Expansion board NPN GT2-E3N
(3 sensor heads/1 board) PNP GT2-E3P

DIN-rail mount type

Up to 5 sensor heads can be connected to 1 amplifier unit

Up to 15 sensor heads can be connected by adding 2 expansion units
* A communication unit (DL Series) is required for output.
Multi-sensor
Multi-head connection
amplifier unit
Main unit GT2-500
Expansion unit GT2-550

14
C O MM U NI C ATI O N U N I T LI N E U P

Judgement Measurement Modify

Communication
Model Appearance result value Control input tolerance Remarks
method
readout readout value

Uses cyclic communication.

A communication program does not need to be
EtherNet/IPTM DL-EP1 created.
Change settings using explicit message
communication.

Uses I/O communication.

A communication program does not need to be
DeviceNetTM DL-DN1 created.
Change settings using explicit message
communication.

Uses data I/O communication.

A communication program does not need to be
PROFINET DL-PN1
created.
Change settings using record data communication.

Uses cyclic transmissions.

A communication program does not need to be
PROFIBUS DL-PD1
created.
Change settings using the DP-V1 service.

Uses cyclic transmissions.

A communication program does not need to be
CC-Link DL-CL1
created.
Change settings using handshake control.

Uses RS-232C communication.

RS-232C DL-RS1A Communicate by creating a communication
program.

Measurement values are synchronised and

updated with the input terminal or automatically
BCD DL-RB1A updated by timer.
Values are synchronised and read by strobe
output.

The symbol indicates wire savings and communication program creation is not required. =Can be accessed by creating a communication program. ×=Cannot be accessed.

S YS T EM C ONF I G U R ATI O N
Adding expansion units to the main unit
Expand with the side connector.

To add a unit, please use the Main unit

Expansion unit
separately available end unit
(OP-26751).

Connector

Main unit
GT2-71N/P Expand with the cable included with the expansion unit.
GT2-71CN/CP
GT2-71MCN/MCP Expansion units To add a unit, mount vertically with
the main unit as the top unit.
GT2-75N/P GT2-72N/P Expansion cable
*The GT2-71D cannot be GT2-72CN/CP
added and used. GT2-76N/P
DL Series
*Expansion units * To mount horizontally, the separately available
communication unit
expandable up to 14 units OP-35361 (expansion cable 300 mm) is required.
for 1 main unit.

15
 OP T I ONS

Mounting brackets (GT2 12 mm type mounting brackets)

GENERAL PURPOSE TYPE SIDE MOUNTING TYPE

Mounting bracket A Mounting bracket B
OP-76874 OP-76875
Drill a ø10 hole, and secure the mounting bracket. For mounting
bracket D, drill a ø14 hole, and secure the mounting bracket.

* T he mounting method is the same for mounting bracket A and mounting bracket C.
* W hen using the GT2-H32L with the contact probe pointed up, use the mounting
holes on the main body.

REINFORCED HOLDING FORCE TYPE SIDE MOUNTING TYPE

Mounting bracket C Mounting bracket E
OP-84396 Vibration resistant OP-87220 Reinforced holding force

Horizontal mounting.

COUPLED MOUNTING TYPE

Mounting bracket F
OP-87863
The sensor head mounting
pitch is 10 mm when the
brackets are mounted to the
Mounting bracket (GT2 32 mm/50 mm type mounting brackets)
same surface and 9 mm
when the brackets are
mounted front and back.

REINFORCED HOLDING FORCE TYPE

Mounting bracket D
OP-84327 Vibration resistant

Contacts

SUPER-TOUGH*2 SUPER-TOUGH (small)*4 FLAT PLATE

STANDARD*1 OP-77682 STANDARD (small)*3 OP-87985 OP-77679 ROLLER
OP-77678 Uses a super-tough alloy, OP-87984 Uses a super-tough alloy, For objects with a curved or OP-77680
For standard measurements for high-accuracy measurements For standard measurements for high-accuracy measurements pointed surface For moving objects

FLUOROCARBON RESIN ROLLER

OP-80228 CERAMIC OFFSET (HIGH-ACCURACY)
Made from material that is OP-81970 NEEDLE OP-77683 SPACER OP-93332
unlikely to damage the target’s To electrically insulate the sensor OP-77681 For multiple measurements of OP-77684 For use when the roller
surface from the target To measure in tight locations a small object Extends the spindle 12.2 mm eccentricity is a concern

*1 Standard on the GT2-P(A)12(L/F), GT2-H(A)12(L/F/LF), GT2-H(A)32(L), GT2-H(A)50

*2 Standard on the GT2-P(A)12K(L/F), GT2-H(A)12K(L/F/LF)
*3 Standard on the GT2-PA12
*4 Standard on the GT2-PA12K

16
Dust boots/Dust seal

STANDARD DUST BOOT (material: NBR)

For 12 mm OP-84332 FLUOROCARBON RUBBER DUST BOOT REPLACEMENT DUST SEAL
For 32 mm OP-84459 (material: FKM) (material: SUS303)
For 50 mm OP-84460 For 12 mm OP-87859 OP-87932
Cannot be used with the GT2-PA12K/PA12. Cannot be used with the GT2-PA12K/PA12. Dedicated for use with the GT2-PA12K/PA12.

Amplifier unit options (for DIN-rail mount/panel mount types)

EXPANSION CABLE
300 mm
DIN-RAIL TYPE SOCKET CABLE PANEL MOUNT OP-35361
AMPLIFIER UNIT BRACKET END UNIT (2 count) GT2-CA2M/CA10M OP-84394 To connect panel types horizontally, and
OP-76877 OP-26751 Required with the connector type Included with the panel type to connect the panel type and the DL

Amplifier unit options (for the GT2-100N/100P)

EXPANSION BOARD BRACKET 20-PIN MIL CONNECTOR 30-PIN MIL CONNECTOR

GT2-E3N/E3P OP-84331 OP-22185 OP-84456
Can expand 3 sensor heads per 1 board To mount on a rack For 1 to 2 sensor heads For the expansion board

CONTACTS CONTACTS EXPANSION CABLE

for AWG24 to 22, 200 count for AWG28 to 26, 200 count SPECIAL CRIMPING TOOL 300 mm
OP-22186 OP-30594 OP-21734 OP-35361
For OP-22185/84456 For OP-22185/84456 For crimping OP-22186/30594 Use when connecting the DL

Others

2-ø4

CONNECTORS
Replacements for connecting
SPEED CONTROLLER LIFT LEVER SENSOR HEAD RELAY CABLE to the amplifier unit COILING TUBE
OP-87970 OP-84397 OP-87431/87432/87433 OP-84338 (2 count) OP-87986
For adjusting the air for air push type Manually lifts the spindle M8-M8 relay cable 3.5 m/7.5 m/9.0 m For the sensor head cable For air push type

17
 V ERS AT I L E D ET EC T I O N M O D E S S U P P O RT A LL AP P L I CATI O N S

AUTO MO BILE S

Flatness measurement of engine block Door beam deformation check Disc assembly inspection

Camshaft runout measurement Side mirror angle inspection Oil pan flatness measurement

ME TALS

Bearing assembly inspection Mill roll gap management Dimensional measurement during
machining

E Q UIP ME N T

Machine tool stroke management Assembly equipment press fitting Product chucking confirmation
inspection

18
 E LE C TR O N IC S

Battery flatness check Smartphone chassis flatness inspection Board assembly check

Hard disk frame assembly inspection Hard disk clamp parallelism inspection Chassis frame warpage inspection

S EM IC ON D UC TO R S/LIQ UID C RY STALS

Polisher height control Liquid crystal panel flatness inspection Wafer thickness measurement

FO O D /P R IN TIN G

Double label stickers detection Workpiece suction check Double feed detection

19
 SP EC I F I C AT I ONS

Pencil type (The GT2-PA12K/PA12 is an air push type)

Model GT2-P12K GT2-P12KF GT2-P12KL GT2-P12 GT2-P12F GT2-P12L GT2-PA12K GT2-PA12

Appearance

Detection system Scale Shot System II, absolute (no tracking errors) type
Measuring range 12 mm
Resolution 0.1 μm 0.5 μm 0.1 μm 0.5 μm
Indicated accuracy*1 1 μm (P-P) 2 μm (P-P) 1 μm (P-P) 2 μm (P-P)
Downward mounting 1.0 N 0.2 N 1.0 N 0.2 N 1.2 N
Measuring
Side mounting 0.95 N 0.15 N 0.95 N 0.15 N 1.15 N
force *2
Upward mounting 0.9 N 0.1 N 0.9 N 0.1 N 1.1 N
Sampling cycle 4 ms
Mechanical response*1 10 Hz 4 Hz 10 Hz 4 Hz -
Applied pressure range - 0.24 MPa to 0.26 MPa
Pressure resistance - 0.5 MPa
Fluid used - Clean dry air
Operation indicator 2-colour LED (red, green)
IP67G (JIS)*3 IP67G (JIS)*3
Enclosure rating IP67 (IEC) - IP67 (IEC) - IP67 (IEC)
NEMA Type 13*3 NEMA Type 13*3
Environmental
Ambient temperature -10 to +55°C (No freezing) 0 to +55°C (No freezing)
resistance
Relative humidity 35 to 85% RH (No condensation)
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Impact resistance 1000 m/s 2 (IEC60068-2-27)
Main body Main body case: SUS 303, Status indicator: PET, Sensor head-relay connector cable: PUR, Relay connector: PBT, Spindle of GT2-PA12K/PA12: SUS430 (Fluorine coating)
Dustboot NBR - NBR -
Materials
SUS304, cemented
Contact*4 SUS304, cemented tungsten carbide SUS304, SUS440C SUS304, SUS440C
tungsten carbide
Sensor head cable Optional (connect to relay connector)
Weight (not including cable)*5 Approx. 35 g Approx. 45 g Approx. 35 g Approx. 45 g Approx. 35 g

*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 When an M8 oil-resistant cable (GT2-CHP2M/CHP5M/CHP10M) is used for the sensor head cable.
*4 Contacts are available as options sold separately.
*5 Including the relay connector.
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.

Measuring force (N)

1.7

Applied pressure
(MPa)

0.26 MPa
1.2
0.25 MPa

0.24 MPa

0.7
0 1 2 3 4 5 6 7 8 9 10 11 12 Spindle position (mm)
Spindle extended Spindle retracted

Table 1. Relationship between spindle position and measuring force

according to air pressure.
(When mounting sideways, the measuring force is -0.05 N.
When mounting upwards, the measuring force is -0.1 N.)

20
Box type
Model GT2-H12K GT2-H12KF GT2-H12KL GT2-H12KLF GT2-H12 GT2-H12F GT2-H12L GT2-H12LF

Appearance

Detection system Scale Shot System, absolute (no tracking errors) type
Measuring range 12 mm
Resolution 0.1 μm 0.5 μm
Indicated accuracy*1 1 μm (P-P) 2 μm (P-P)
Downward mounting 1.0 N 0.4 N 1.0 N 0.4 N
Measuring
Side mounting 0.9 N 0.3 N 0.9 N 0.3 N
force *2
Upward mounting 0.8 N 0.2 N 0.8 N 0.2 N
Sampling cycle 1 ms
Mechanical response*1 10 Hz 4 Hz 10 Hz 4 Hz
Operation indicator 2-colour LED (red, green)
Enclosure rating IP67 (IEC) - IP67 (IEC) -
Ambient temperature -10 to +55°C (No freezing)
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Impact resistance 1000 m/s 2 (IEC60068-2-27)
Main body Main body case: die-cast zinc, Indicator: polyarylate (PAR)
Materials Dustboot NBR - NBR -
Contact*3 SUS304, cemented tungsten carbide SUS304, SUS440C
Sensor head cable Optional (connect to the M8 connector)
Weight (not including cable) Approx. 95 g Approx. 100 g Approx. 95 g Approx. 100 g Approx. 95 g Approx. 100 g Approx. 95 g Approx. 100 g
*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 Contacts are available as options sold separately.

Box type (long range type)

Model GT2-H32 GT2-H32L GT2-H50

Appearance

Detection system Scale Shot System, absolute (no tracking errors) type
Measuring range 32 mm 50 mm
Resolution 0.5 μm
Indicated accuracy*1 3 μm (P-P) 3.5 μm (P-P)
Downward mounting 2.1 N 1.2 N 3.2 N
Measuring
Side mounting 1.8 N 0.9 N 2.8 N
force *2
Upward mounting 1.5 N 0.6 N 2.4 N
Sampling cycle 1 ms
Mechanical response*1 6 Hz 5 Hz 7 Hz
Operation indicator 2-colour LED (red, green)
Enclosure rating IP67 (IEC) - IP67 (IEC)
Environmental Ambient temperature -10 to 55°C (No freezing)
resistance Relative humidity 35 to 85% RH (No condensation)
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Main body Main body case: die-cast zinc, Indicator: polyarylate (PAR)
Materials Dustboot NBR - NBR
Contact*3 SUS304, SUS440C
Sensor head cable Optional (connect to the M8 connector)
Weight (not including cable) Approx. 270 g Approx. 320 g
*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 Contacts are available as options sold separately.

21
 SP EC I F I C AT I ONS

Box type (air push type)

Model GT2-A12K GT2-A12KL GT2-A12 GT2-A12L

Appearance

Detection system Scale Shot System, absolute (no tracking errors) type
Measuring range 12 mm
Resolution 0.1 μm 0.5 μm
Indicated accuracy*1 1 μm (P-P) 2 μm (P-P)
Downward mounting 1.2 N 0.4 N 1.2 N 0.4 N
Measuring
Side mounting 1.1 N 0.3 N 1.1 N 0.3 N
force*2
Upward mounting 1.0 N 0.2 N 1.0 N 0.2 N
Sampling cycle 1 ms
Applied pressure range 0.25 MPa to 0.50 MPa
Pressure resistance 1 MPa
Fluid used Dry air
Operation indicator 2-colour LED (red, green)
Enclosure rating IP67 (IEC)*3 - IP67 (IEC)*3 -
Ambient temperature 0 to +55°C (No freezing)
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Impact resistance 1000 m/s 2 (IEC60068-2-27)
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)
Materials Dustboot NBR - NBR -
Contact *4 SUS304, cemented tungsten carbide SUS304, SUS440C
Sensor head cable Optional (connect to the M8 connector)
Weight (not including cable) Approx. 145 g

*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 Contacts are available as options sold separately.

Box type (air push type/long range type)

Model GT2-A32 GT2-A50

Appearance

Detection system Scale Shot System, absolute (no tracking errors) type
Measuring range 32 mm 50 mm
Resolution 0.5 μm
Indicated accuracy*1 3 μm (P-P) 3.5 μm (P-P)
Downward mounting 2.1 N 3.2 N
Measuring
Side mounting 1.8 N 2.8 N
force*2
Upward mounting 1.5 N 2.4 N
Sampling cycle 1 ms
Applied pressure range 0.25 MPa to 0.50 MPa
Pressure resistance 1 MPa
Fluid used Dry air
Operation indicator 2-colour LED (red, green)
Enclosure rating IP67 (IEC)*3
Environmental Ambient temperature 0 to +55°C (No freezing)
resistance Relative humidity 35 to 85% RH (No condensation)
Vibration*4 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
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)
Materials Dustboot NBR
Contact *5 SUS304, SUS440C
Sensor head cable Optional (connect to the M8 connector)
Weight (not including cable) Approx. 340 g Approx. 405 g

*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.

22
Judgement output/analogue output type
Main unit GT2-71(C)N GT2-75N GT2-71MCN
NPN output
Expansion unit *1 GT2-72(C)N GT2-76N -
Model
Main unit GT2-71(C)P GT2-75P GT2-71MCP
PNP output
Expansion unit *1 GT2-72(C)P GT2-76P -

Appearance

Mounting type*2 DIN-rail mount Panel mount DIN-rail mount

Number of expansion units *1 Up to 14 expansion units for 1 main unit
Power supply voltage *1 10 to 30 VDC, including 10% ripple (P-P), Class 2 20 to 30 VDC, including 10% ripple (P-P), Class 2
Display range -199.999.9 to 199.999.9
Display resolution 0.1 μm
Normal 2200 mW or less (73.3 mA or less at 30 V) 2700 mW or less (90.0 mA or less at 30 V)
Power consumption Power saving (Eco half) 1800 mW or less (60.0 mA or less at 30 V) 2300 mW or less (76.7 mA or less at 30 V)
Power saving (Eco all) 1700 mW or less (56.7 mA or less at 30 V) 2200 mW or less (73.3 mA or less at 30 V)
Response time hsp (3)/5/10/100/500/1000 ms (When using GT2-Pxxx, hsp (12)/20/40/400/2000/4000 ms)
Control output NPN output NPN open collector, 40 V 50 mA or less, residual voltage 1 V or less*1
(HH/HI/GO/LO/LL)*3 PNP output PNP open collector, 30 V 50 mA or less, residual voltage 1 V or less *1
Timing/preset/
Control input No-voltage input
reset/bank input
Output range - 4 to 20 mA with a max. load resistance of 350 Ω
Analogue output
Response time - Set response time + 1 ms
Ambient temperature -10 to +50°C (No freezing)*1
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Main body case/front cover: polycarbonate (PC), Key top: polyacetal (POM),
Materials
Front sheet: polyethylene terephthalate (PET), Cable: polyvinyl chloride (PVC)
GT2-71N(P)/72N(P) Approx. 140 g (including power supply cable)
GT2-75N(P)/76N(P) Approx. 140 g (including panel mount, front protective cover, power supply cable)
Weight
GT2-71MCN(P)/
Approx. 70 g (not including the GT2-CA2M/CA5M/CA10M)
71CN(P)/72CN(P)
*1 When adding expansion units, there are the following restrictions according to the number of connected units.
• When 2 to 8 units are connected including the main unit
• Power supply voltage: 20 to 30 VDC

• Control output current: 20 mA or less

• (GT2-71MCN(P) only) Ambient temperature: -10 to 45°C

• When 9 to 15 units are connected including the main unit

• Power supply voltage: 20 to 30 VDC

• Control output current: 10 mA or less (including the DL-RB1A output current)

• Residual voltage: 1.5 V or lower

• (GT2-71MCN(P) only) Ambient temperature: -10 to 45°C

*2 When using the DIN-rail mount type, always mount it to a DIN-rail (mounted to a metal plate), and when adding expansion units, always use the end unit (OP-26751).
*3 The GT2-71MCN(P) does not have HH/LL.

Pulse output type

Model GT2-71D

Appearance

Mounting type DIN-rail mount

Number of expansion units Only 1 unit
Power supply voltage 10 to 30 VDC, including 10% ripple (P-P), Class 2
Power consumption 1600 mW or less (53.3 mA or less at 30 V)
Indicators Power supply (green)/alarm (red) indicator, pulse output indicator (green), input indicator
Pulse resolution Select from 0.1/0.5/1/10 μm (when shipped: 0.5 μm)
Minimum phase difference Select from 0.5/2.5/5/25 μs (when shipped: 2.5 μs)
Control input Origin return No-voltage input (contact, non-contact)
Output signal 90° phase difference, differential square wave (EIA-422 compliant) 4x multiplier
Output signal level +5 V
Ambient temperature -10 to +50°C (No freezing)
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Materials Main body case/front cover: polycarbonate (PC), Cable: polyvinyl chloride (PVC)
Weight Approx. 110 g (including power supply cable)

23
 SP EC I F I C AT I ONS

Large display type

NPN output GT2-100N GT2-E3N
Model
PNP output GT2-100P GT2-E3P

Appearance

Mounting type Panel mount -

2 heads with GT2-100N(P) alone
Number of connectable heads + 3 heads per 1 head board expansion -
When expanded with a maximum of 3 head boards, 11 heads
Power supply voltage 10 to 30 VDC, including 10% ripple (P-P), Class 2 Supplied from the GT2-100N/100P
Display range -199.999.9 to 199.999.9 -
Display resolution 0.1 μm -
4500 mW or less 4200 mW or less
Normal
(150.0 mA or less at 30 V) (140.0 mA or less at 30 V)
3700 mW or less 4200 mW or less
Power consumption Power saving (Eco half) *1
(123.3 mA or less at 30 V) (140.0 mA or less at 30 V)
3600 mW or less 4000 mW or less
Power saving (Eco all)*1
(120.0 mA or less at 30 V) (133.3 mA or less at 30 V)
hsp (3)/5/10/100/500/1000 ms
Response time
(When using GT2-Pxxx, hsp (12)/20/40/400/2000/4000 ms)
Control output NPN output NPN open collector, 40 V 50 mA or less*3, residual voltage 1 V or less
(HH/HI/GO/LO/LL) PNP output PNP open collector, 30 V 50 mA or less*3, residual voltage 1 V or less
Timing/preset/
Control input No-voltage input
reset/bank input
Power supply: Terminal block connection
Input/output connector *2 30-pin connector (MIL standard)
Input/output: 20-pin connector (MIL standard)
Ambient temperature -10 to +50°C (No freezing)
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 0.15 mm in the X, Y, Z axis directions respectively, 2 hours
Main body case/front cover: polycarbonate (PC),
Materials Key top: polyacetal (POM), -
Front sheet: polyethylene terephthalate (PET)
Weight Approx. 380 g Approx. 80 g
*1 When the maximum number of sensor heads is connected, and all devices are set to power saving settings
*2 The connector and cable are sold separately.
*3 When 2 or more sensor heads are connected, 20 mA or less.

Multi-head type
Main unit GT2-500
Model
Expansion unit GT2-550

Appearance

Mounting type *1 DIN-rail mount

Maximum of 3 units including the main unit
Number of expansion units *2
(Maximum of 15 sensor heads)
Power supply voltage 20 to 30 VDC, including 10% ripple (P-P) (GT2-550 power supplied from the main unit), Class 2
4800 mW
Consumption current
160.0 mA or less at 30 V
hsp (3)/5/10/100/500/1000 ms
Response time
(When using GT2-Pxxx, hsp (12)/20/40/400/2000/4000 ms)
Ambient temperature -10 to +50°C
Environmental
Relative humidity 35 to 85% RH (No condensation)
resistance
Vibration 10 to 55 Hz Double amplitude 1.5 mm in the X, Y, Z axis directions respectively, 2 hours
Materials Main body case: polycarbonate, Cable: PVC
Weight GT2-500: Approx. 140 g, GT2-550: Approx. 95 g

*1 When connecting the DL Series and expansion units, always connect them when the amplifier unit is connected to the DIN-rail and use the end unit (OP-26751 included with the DL Series).
*2 When using the DL-RB1A (for communication), ensure that the output current is 10 mA or less.

24
 D I M ENS I ONS Unit: mm

M8 cable connector
Sensor head (standard) M8 cable connector Sensor head (low stress)
GT2-P12K/ 11.4 12.8 GT2-P12KL/ 11.4 12.8
44.2
GT2-P12 44.2 GT2-P12L
10 min.
10 min. （6.8）
(6.8) 4.6
4.6 ø3.8
ø3.8
Cable length Cable length
150 mm 150 mm
10 min.
10 min.
Indicator Indicator

104.8
104.8
75.2 75.2
(Mountable (Mountable
range) range)
0
ø8 −0.030
0
ø8 −0.030

14.1 17.9 14.1 17.9

to to to
to ø4 26.4 30.2
ø4 26.4 30.2

3.8 3.8

Sensor head (flange) M8 cable connector Sensor head (Air push) Air supply joint
(For air tube with 2.5 mm inner dia.)
GT2-P12KF/ 11.4 12.8 GT2-PA12K/ M8 cable connector
GT2-P12F 44.2 GT2-PA12
12.8
10 min. 16.5
4.6 44.2 44.2
(6.8) 10 min.
ø3.8 (11.9)
Cable length 4.6
150 mm ø3.8
10 min. Cable length
Indicator 150 mm 10 min.

Indicator

ø11
90.7

ø8
104.8
12(MAX ø13) 12(MAX ø13) 75.2
(Mountable
−0.005 range)
ø10−0.030
6.1 14.1 0
ø8 -0.030
13.6 Nut 5 13.6
M10 x 0.75 to
14.1 17.9 26.4
to to
ø4 26.4 30.2 17.4
4 to
3.8 30.2
ø4
3.8

Sensor head - Sensor head cable

When attached

ø9.5*

67

* When using GT2-CHP2M/CHP5M/CHP10M, ø10

25
 DIM ENS I ONS

Sensor head
(Standard) GT2-H12K/GT2-H12 GT2-H12KF/GT2-H12F
GT2-H12K/GT2-H12/ Cable connection Cable connection
GT2-H12KF/GT2-H12F M8 cable connector M8 cable connector (Straight) 10.7 (L-shaped)
28 ø9.5 20.2
28
16 16 1.15 ø9.5 3.05
15.5 5.9 15.5 (12.5) 5.9
(12.5) (10.1) (10.1)
ø8 ø8 (6.4) 9
(6.4) 1.15

(58) 95.3 92.3

(58) 73.1
66.7 67.8 74.1

8.7 1 9.7
ø10 g6 ( -0.005
-0.014 )
ø11.6 15.1 5 14
41.5 45.3 40.5 44.3
to to to to
29.0 32.8 28.0 31.8
M10 x 0.75
ø4 ø4
6 (22) 3.8 6.4 (9.6) 6 (22) 3.8 (9.6)
6.4
ø8 h5 ( +0
-0.006 )

Sensor head GT2-H12KL/GT2-H12L GT2-H12KLF/GT2-H12LF

(Low stress) Cable connection Cable connection
M8 cable connector M8 cable connector 10.7
GT2-H12KL/GT2-H12L 28 28 (Straight) ø9.5 (L-shaped)
1.15
20.2
16 16 ø9.5 3.05
GT2-H12KLF/GT2-H12LF 15.5
(12.5) 5.9 (10.1)
15.5 (12.5) 5.9 (10.1)
ø8 (6.4) 9
(6.4) ø8 1.15

(58) 95.3 92.3

(58)
66.7 73.1
67.8 74.1

8.7 1 9.7
ø10 g6 ( -0.005
-0.014 )
ø11.6 15.1 5 14
41.5 45.3 40.5 44.3
to to to to
29.0 32.8 28.0 31.8
M10 x 0.75
ø4 ø4
6 (22) 3.8 6.4 (9.6) 6 (22) 3.8 (9.6)
6.4
ø8 h5 ( +0
-0.006 )

Sensor head
(Standard) 37.6 M8 cable connector
19.7 Cable connection
25.1 (12.5)
GT2-H32 17.8 (19.8) 8.15 (11.55)
(Straight) ø9.5 20.35

ø8
(6.4)
3.4

(53.3)
116.4 9.7 119.5
(88.5)
90.9 97.3
23
8.7 (14.3) 0.3
5.9 27.9 20
17 2.4
2-ø4.3 ø15
43.8 47.6
30 to to
(17.8)
77.8 81.6
3.8

12.2 (25.4) ø5
12.2 (7.8)
ø12 h6 ( +0
-0.011 )

Sensor head (Low stress) 37.6

(12.5)
M8 cable connector
19.7 Cable connection
25.1 (Straight)
GT2-H32L 17.8 (19.8) 8.15 (11.55)
ø9.5 20.35
ø8
(6.4)
3.4

(53.3)
116.4 9.7 119.5
(88.5)
90.9 97.3
23
8.7 (14.3) 0.3
5.9 27.9 20
17 2.4
2-ø4.3 ø15
43.8 47.6
30 to to
(17.8) 77.8 81.6

3.8

12.2 (25.4) ø5
ø12 h6 ( +0 12.2 (7.8)
-0.011 )

26
 Unit: mm

Sensor head 37.6 19.7

M8 cable ø9.5 20.35
(Standard) 25.1 (12.5) connector 8.15 (11.55) Cable connection
17.8 (19.8) (Straight)
GT2-H50
ø8
(6.4)
3.4

152.4 (53.3)
9.7 137.5
(106.5) 115.3
23 108.9
8.7 (14.3)
5.9 45.9 (0.3)
20

2-ø4.3 17 2.4
ø15

30 48.6 52.4
(17.8) to to
100.6 104.4

3.8

12.2 (25.4) ø5
ø12 h6 ( +0 12.2 (7.8)
-0.011 )

32.5 One-touch air supply joint

Sensor head 25.5 (for 4 mm outside diameter air tube.)
28 16
(Air push) 10.75 ø9.5 (10.1)
5.9 Air exhaust joint
GT2-A12K/GT2-A12 15.5 (12.5)
1.15 (for 2.5 mm inside diameter air tube.) ø14
5.95 M8 connector

17.7

(5.5) 97.35 13.1

1.05
95.3 12.5
1.55 84.85
(58) 22.4 15
25.15 18
66.7 39.8
3.05
8.7
ø11.6 29 32.8 8.75
to to
15.1 41.5 45.3
There are no dust boots on ø4
6 (22)
the low stress type 3.8 6.4 (9.6)
ø8 h5 34.5
GT2-A12L/A12KL

37.6 (12.5) 37 One-touch air supply joint

25.1
17.8 (19.8) 30 (for 4 mm outside diameter air tube.)
8.15 19.7 ø14
20.35 ø9.5 (11.55) Air exhaust joint
(for 2.5 mm inside
Sensor head diameter air tube.)
(Air push) 15
29.75
GT2-A32 M8 connector
3.4
27

12.5 155.2

142.7 18
(53.3) 119.5 (5.5)
28.1
23 32.7
88.5
(14.3) 75.65 15
9.7 90.9
8.7 18
5.9 0.3
27.9 2.4

2 x ø4.3
ø15 44.3 48.1 5.6
17 to to
30 77.8 81.6

(17.8) ø5
12.2 3.8 12.2 (7.8)
(25.4)
ø12 h6 39

37.6
25.1 (12.5)
37 One-touch air supply joint
17.8 (19.8) 30 (for 4 mm outside diameter air tube.)
20.35 ø9.5 19.7 ø14
Sensor head 8.15 (11.55)
(Air push) Air exhaust joint 15
GT2-A50 29.75 (for 2.5 mm inside
diameter air tube.)
27

M8 connector

3.4
178.7

12.5
191.2
(53.3) 18
(5.5)
137.5 28.1
106.5 32.7
23 9.7 108.9 15
(14.3) 93.65
8.7 18
45.89 0.3
5.9
2.4

2 x ø4.3
ø15
49.1 52.9 5.6
17 to to
100.6 104.4
30

(17.8)
12.2 3.8 ø5
ø12 h6 (25.4) 12.2 (7.8)
39

27
 DIM ENS I ONS

Amplifier unit GT2-71N/71P/71MCN/71MCP/71CN/71CP GT2-72N/72P/72CN/72CP

DIN-rail mount type * *
24 24
8.9 14.6 8.9 14.6

3 135° max. 3
(Maximum
when cover
is opened)
82.9
36.9 36.9
41.8 41.8
12.4 17.4 12.4
17.4

15 min. 20 21.1 35.4 15 min. 20 21.1 35.4

75.8 15 min. 75.8 15 min.
(Maximum when cover
is opened) 132.6
* Cable specifications
GT2-71N/71P: ø4.7, 12-core x Brown/Blue: 0.20 mm2, Black/White/Grey/Orange/Green/Pink/Purple/Yellow/Red/Pink purple: 0.15 mm2, Cable length: 2 m
GT2-72N/72P: ø4.7, 10-core x Black/White/Grey/Orange/Green/Pink/Purple/Yellow/Red/Pink purple: 0.15 mm2, Cable length: 2 m

GT2-71MCN/71MCP/71CN/71CP/72CN/72CP GT2-CA2M/CA10M
Connector Connection cable
(connector type/analogue output type amplifier unit)
44
46 *
ø15

ø15
* Cable specifications
Cable length: 0.3 m, ø4.7 Outer diameter: ø4.7 mm, Cable length: 2 m (GT2-CA2M), 10 m (GT2-CA10M),
12-core x Brown/Blue: 0.20 mm2, Black/White/Grey/Orange/Green/Pink/Purple/
GT2-71D Yellow/Red/Pink purple: 0.15 mm2
Amplifier unit *
Pulse output 24
14.6
8.9

3 135° max.
(Maximum
when cover
is opened)
36.9 82.9
41.8
12.4 17.4

15 min. * Cable specifications

20 21.1 35.4
75.8 Outer diameter: ø4.7 mm, Cable length: 2 m,
15 min.
(Maximum when cover 9-core x Brown/Blue/Purple/Pink/Orange/Green/Grey/White/Black: 0.15 mm2
is opened) 132.6

End unit (Optional) (2 pcs.) When several units are connected

Number of
Mounting bracket for OP-26751 units L
DIN-rail mount type L 1 24
2 48
amplifier (Optional) 6 3 72
OP-76877 6 6 4 96
DIN-rail mount 5 120
6 144
5 15 2-ø3.4 7 168
(22.6) 20.8 8 192
2-(4.4 x 3.4)
9 216
10 240
53.8 53.8
9.2 35.4 11 264
24 22
53.8 12 288
13 312
15 Material: Polycarbonate, Stainless steel
10.1 10.1 14 336
28.6 15 360
Material: SUS304
35

Amplifier unit GT2-75N/75P/76N/76P

Panel mount type 44.7
13.9
13.4

* Cable specifications (common to all amplifier units)

GT2-75N/75P: ø4.7, 12-core x Brown/Blue: 0.20 mm2, Black/White/Grey/
Orange/Green/Pink/Purple/Yellow/Red/Pink purple: 0.15 mm2,
Cable length: 2 m
GT2-76N/76P: ø4.7, 10-core x Black/White/Grey/Orange/Green/Pink/
52 Purple/Yellow/Red/Pink purple: 0.15 mm2, Cable length: 2 m

7
1.5 2.3
19.8

23.9 20.9
12.2
*
66 8.5 4.1

Panel mounting bracket Panel cutout Panel mounting bracket

(Accessory) 45 (73)
OP-84394 11.9
38.8
X = 24 x (A-1) + 21 Panel thickness
X When A amplifier units are 1 to 6
49 closely mounted

24

69.5 min.
Protective front cover
21 +0.4
-0

23.8
45
69
11.7 Material: (Mounting bracket) Polyacetal,
(Protective front cover) Polycarbonate

28
 Unit: mm

Amplifier unit When the supplied mounting bracket is attached GT2-E3N/E3P Expansion board
Large display
GT2-100N/100P
133
Panel thickness: 1 to 6
159.5

82.7
79.8 49.3 75.8

11 1.2
12.1 82
85.2
29.9 15.1
60
1.6
40 Panel cutout
28
97.2
Screw hole for mounting OP-84331 (119.6) (139.4) +1
Nominal diameter: 3, 76 -0
Tapping depth: 5 max.

139.5 +1
-0
138.8
161.8 (Outer dimension
of the supplied mounting bracket)

When the optional mounting bracket (OP-84331) is used

84.4

4.6 t=1.6 6.6

34 4-ø3.5

40 40 28

4-ø5
40.5 60
Nominal diameter: 3, 150
5.6 5.6
fastened with four tapping 150 160
screws (supplied)

Amplifier unit Amplifier unit

Multi-head type main unit Multi-head type expansion unit
GT2-500 GT2-550

48 48
24 25.55 25.55

14.5 56(P14 x 4) 14.5 56(P14 x 4)

15 min. 15 min.

ø3.7
71.5 Cable length: 2 m 71.5
58.2 53.3 58.2 53.3
21.5

30.3 35.4 30.3 35.4

85 15 min. 85

When amplifier units are added

6 6

Number of units L
1 48
2 96
3 144
53.8 53.8

10.1 10.1

Connecting
24 communication units
L

29
 DIM ENS I ONS Unit: mm

Sensor head
mounting bracket A Sensor head cable (straight)/(oil-resistant straight)
(Optional) 12 12 Mounting hole GT2-CH2M/5M/10M/20M (Optional)/
OP-76874 R6.5
ø0.025 A GT2-CHP2M/5M/10M (Optional)
ø8 2000(GT2-CH2M/GT2-CHP2M)/5000(GT2-CH5M/GT2-CHP5M)/
ø10 (
ø10 g8 +0.027
+0.005 ) 10000(GT2-CH10M/GT2-CHP10M)/20000(GT2-CH20M)
6 16.3
C1.5 ø9.5*
45°± 1°
3.5 7.8 A B

0.5 to 1.0* A 5.5 to 11.3* 27.2

4.8 4 x 0.22 mm 2
7.2
Material: SUS304 * Processing accuracy: ±0.05 * When using GT2-CHP2M/CHP5M/CHP10M, ø10

Sensor head
mounting bracket C
(Optional) 12 12 Mounting hole Sensor head cable (L-shaped)
R6.5
OP-84396 ø0.025 A GT2-CHL2M/5M/10M/20M (Optional)
ø8
2000(GT2-CHL2M)/5000(GT2-CHL5M)/
ø10 ø10 +0.1
+0.005 10000(GT2-CHL10M)/20000(GT2-CHL20M)
C1.5 6 16.3 23 ø7 ø9
45°± 1° B
5 7.8 24.2
0.5 to 1.0* 4.8 4 x 0.22 mm2
A 5.5 to 11.3* A
ø9
Material: SUS304 * Processing accuracy: ±0.05 * Cannot be used with the GT2-H32(L)/H50/A32/A50.

Sensor head Sensor head Pin arrangement

mounting bracket B mounting bracket E Sensor head cable (straight/L-shaped)
6.5 A B Casing cover
(Optional) (Optional) 10.5 ➃
2
1
➂ (1) (1) Brown
R8 4-C2 A B
OP-76875 OP-87220 32
4
3
➁
➀ (2) (3) White
(0.2) (3) (4) Blue
12.1 (4) (2) Black
ø4.2
6.3
16.3 11 Dustboot
R3.8 15 3.5
Material: SUS304, Zinc

ø8

Sensor head
mounting bracket D
(Optional) 16 16 OP-84332 OP-87859 (Optional)
R8.5 Mounting hole
OP-84327 ø0.025 A
Applicable models Applicable models
ø12 GT2-P12K(F)/P12(F) GT2-P12K(F)/P12(F)
25.3
ø14 6 GT2-H12K(F)/H12(F) Materials: Fluorocarbon rubber,
ø14 +0.1
+0.005
ø7.6
GT2-A12K/A12 SUS304
C1.5 16.3
45°± 1°
Materials: NBR, SUS304
5 7.8
* Attached to the sensor head.
5.5 to 11.3*
17 (Excluding the low stress type)
0.5 to 1.0* A
17 17

Material: SUS303 * Processing accuracy: ±0.05

OP-84459 OP-84460
Applicable models Applicable models
GT2-H32 GT2-H50
Sensor head 58.2
81
GT2-A32 GT2-A50
mounting bracket F * Attached to the sensor head. * Attached to the sensor head.
(Optional) 9.8 Mounting
.7

hole
x0

OP-87863 ø4.4
M4

ø11.6
ø11.6
8.5 ø8 8.5
23.4
ø8 +0.2
11.1 +0. 00
005

13.9 12 Replacement dust seal OP-87932

6 10.5 Applicable models
* Thickness: Over 5 mm
GT2-PA12(K)
M4

* Attached to the sensor head.

x0

ø7.7
Material: SUS303
.7

Contact
Standard Super-tough Standard Super-tough Flat plate Roller Fluorocarbon resin
OP-77678 OP-77682 (small) (small) (Optional) (Optional) ø9 M2.5 x 0.45
(Optional)
5
5 OP-87984 OP-87985 OP-77679 M2.5 x 0.45 OP-77680 ø7.5 OP-80228
M2.5 x 0.45 5 5
M2.5 x 0.45
M2.5 x 0.45 3.5
9.5
ø6
SR1.5 3.8 4.5 ø7 7.5 9
3.8
ø5 SR1.5 ø4 SR1.5
ø9
ø5
4.5
Material:
Material: Material: Material: SUS304 Material: SUS304 Fluorocarbon resin
OP-77678 OP-77682 OP-87984 OP-87985 Super-tough SUS440C (PTFE)
SUS304 SUS304 SUS304 SUS304 tungsten alloy 4.4 4 9
SUS440C Super-tough SUS440C Super-tough
tungsten alloy tungsten alloy

Ceramic Needle Offset Spacer Roller (high-accuracy)

(Optional) (Optional) (Optional) (Optional) (Optional)
ø7.5
OP-81970 5 OP-77681 5 OP-77683 ø6 OP-77684 OP-93332 ø8
M2.5 x 0.45 M2.5 x 0.45 M2.5 x 0.45 M2.5 x 0.45 M2.5 x 0.45
8 5.5 3.2
6.2 10
5 12.2 2
3.8 SR1.5 3.5 21.7
ø5 M2.5 x 0.45 11.7
21 Effective screw depth:
20 3.6 6.5 mm
ø9
Material: SUS304, Ceramic Material: SUS304 Material: SUS304 Material: SUS304 ø4 Material: SUS304
Super-tough C0.2 Super-tough SR0.8 10 SUS303
tungsten alloy ø1.2 tungsten alloy SUS440C 4.5 4
ø1.6
ø4 ø9

30
 I NPU T /OU T PU T CI R CU I T D I A G R A M S

I/O circuit GT2-71N/72N/71CN/72CN/71MCN/75N/76N External input circuit

Brown *1 5 VDC Pink: Preset input

10 to 30 VDC *3
Purple: Bank A input
Orange (HH output) *2
Pink/purple: Timing input
Overcurrent protection circuit

Load 5 to 40 VDC
Black (HI output) Yellow: Bank B input
Load 5 to 40 VDC
Grey (GO output) Red: Reset input
Main circuit

Load 5 to 40 VDC

Main circuit
White (LO output)
Load 5 to 40 VDC
Green (LL output) * 2 Blue *1
Load 5 to 40 VDC
Blue *1
0V
(Short-circuit current: 1 mA max.)
Pink, purple, pink/purple, yellow, red *4
Input circuit External input

I/O circuit GT2-71P/72P/71CP/72CP/71MCP/75P/76P External input circuit

10 to 30 VDC
Brown *1
10 to 30 VDC *3 Brown *1
Orange (HH output) * 2
Overcurrent protection circuit

Black (HI output) Load

Main circuit
Grey (GO output) Load
Main circuit

White (LO output) Load Pink: Preset input

Purple: Bank A input
Green (LL output) *2 Load
Pink/purple: Timing input
Blue *1 Load
0V Yellow: Bank B input
(Short-circuit current: 2 mA max.)
Pink, purple, pink/purple, yellow, red *4 Red: Reset input
Input circuit External input

*1 Brown and blue are applicable only to main units (GT2-71N/71P/71CN/71CP/71MCN/71MCP/75N/75P). Not applicable to expansion units (GT2-72N/72P/72CN/72CP/76N/76P).
The connector type expansion unit (GT2-72CN/72CP) is not connected to the internal circuit.
*2 The orange and green wires are used as analogue output cables for the analogue type amplifier unit (GT2-71MCN/71MCP).
For details, refer to the analogue output circuit diagram.
*3 20 to 30 VDC when expansion unit is connected or for the analogue type amplifier unit (GT2-71MCN/71MCP).
*4 For details on external input, refer to the external input circuit diagram.

Analogue output circuit Pulse output amplifier unit GT2-71D

GT2-71MCN/71MCP I/O circuit External input circuit Recommended input device

Brown 5 VDC AM26LS32 line receiver or equivalent device

10 to 30 VDC
5 VDC
Orange Black, white,
Analogue output 33 Ω orange
(4 to 20 mA) Black: Phase A, White: Phase Pink 390 Ω
Main circuit

Main circuit

B, Orange: Phase Z
Purple, grey,
Main circuit

33 Ω green Purple: Reversed phase A

Grey: Reversed phase B
Green: Reversed phase Z Blue
Green *
0 V (for analogue) Blue
0V
Pink * (Short-circuit current: 1 mA max.)
Input circuit Input

* The green and blue wires are common internally. * For details of the external input, refer to the diagram of the external input circuit.

Output circuit of the large display amplifier unit Input circuit of the large display amplifier unit Multi-head amplifier unit GT2-500 (main unit)
GT2-100N/GT2-E3N GT2-100N/GT2-E3N The power supply cable is as follows.
(Pin Nos. 1 to 5, 11 to 15, 21 to 25) (Pin Nos. 6 to 10, 16 to 20, 26 to 30)
+* 5 VDC Brown
20 to 30 VDC
1 to 5, 11 to 15, 21 to 25 Blue 20 to 30 VDC
Overcurrent protection circuit
Sensor main circuit

Load 5 to 40 VDC 6 to 10, 16 to 20, 26 to 30

Main circuit

-*
-*
0V
(Short-circuit current: 1 mA max.)
* The +/- terminals are provided in the GT2-100N only. * The - terminal is provided in the GT2-100N only.
They are not provided in the GT2-E3N. It is not provided in the GT2-E3N.

Output circuit of the large display amplifier unit Input circuit of the large display amplifier unit
GT2-100P/GT2-E3P GT2-100P/GT2-E3P
(Pin Nos. 1 to 5, 11 to 15, 21 to 25) (Pin Nos. 6 to 10, 16 to 20, 26 to 30)
+* 20 to 30 VDC
20 to 30 VDC
+*
Overcurrent protection circuit
Sensor main circuit

Main circuit

1 to 5, 11 to 15, 21 to 25
6 to 10, 16 to 20, 26 to 30
Load
-*
0V (Short-circuit current: 2 mA max.)

* The +/- terminals are provided in the GT2-100P only. * The + terminal is provided in the GT2-100P only.
They are not provided in the GT2-E3P. It is not provided in the GT2-E3P.

31
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