GT2 series

High-Accuracy Digital Contact Sensor

Sensor heads for the GT2 Standard Type
Sensor heads for the GT2 Air Push Type
DIN-rail mount type amplifier unit(For the pulse output type)
Panel mount type amplifier unit
DIN-rail mount type pulse output amplifier unit

Sensor heads for the GT2 Standard Type

Model		GT2-H12K	GT2-H12KL	GT2-H12	GT2-H12L	GT2-H32	GT2-H32L	GT2-H50
Detection system		Quartz glass scale, CMOS image sensor projection system, Absolute type (without tracking error)
Measuring range		12 mm 0.47"				32 mm 1.26"		50 mm 1.97"
Resolution		0.1 μm 0.004 Mil		0.5 μm 0.02 Mil
Accuracy (20°C (68°F))		1 μm 0.04 Mil (p-p)		2 μm 0.08 Mil (p-p)		3 μm 0.12 Mil (p-p)		3.5 μm 0.14 Mil (p-p)
Measuring force^*1	Downward mounting	1.0 N	0.4 N	1.0 N	0.4 N	2.1 N	1.2 N	3.2 N
	Side mounting	0.9 N	0.3 N	0.9 N	0.3 N	1.8 N	0.9 N	2.8 N
	Upward mounting	0.8 N	0.2 N	0.8 N	0.2 N	1.5 N	0.6 N	2.4 N
Mechanical response		10 Hz	4 Hz	10 Hz	4 Hz	6 Hz	5 Hz	7 Hz
Probe		Carbide ball ø3		Steel ball ø3
Operation indicator		2-color LED (red, green)
Environmental resistance	Enclosure rating	IP67	–	IP67	–	IP67	–	IP67
	Ambient temperature	-10 to +55°C (14 to 131°F) (No freezing)
	Relative humidity	35 to 85% RH (No condensation)
	Vibration	10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions
Sensor head cable		Optional (M8 connector)
Materials	Main body	Main body cast: Zinc die-casting, Indicator: Polyarylate, Dust boot: NBR	Main body cast: Zinc die-casting, Indicator: Polyarylate	Main body cast: Zinc die-casting, Indicator: Polyarylate, Dust boot: NBR	Main body cast: Zinc die-casting, Indicator: Polyarylate	Main body cast: Zinc die-casting, Indicator: Polyarylate, Dust boot: NBR	Main body cast: Zinc die-casting, Indicator: Polyarylate	Main body cast: Zinc die-casting, Indicator: Polyarylate, Dust boot: NBR
	Contact	TYPE304 Stainless steel, super-tough tungsten alloy		TYPE304, 440C Stainless steel
Weight (excluding cable)		Approx. 95 g				Approx. 270 g		Approx. 320 g
Accessories		Refer to the instruction manual.
Type		Standard/Low stress (L) type (Sensor head for 12 mm 0.47")				Standard/Low stress (L) type (Sensor head for 32 mm 1.26"/50 mm 1.97" range)
^*1 Value at center of measuring range.

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Sensor heads for the GT2 Air Push Type

Model		GT2-A12K	GT2-A12KL	GT2-A12	GT2-A12L	GT2-A32	GT2-A50
Detection system		Quartz glass scale, CMOS image sensor projection system, Absolute type (without tracking error)
Measuring range		12 mm 0.47"				32 mm 1.26"	50 mm 1.97"
Resolution		0.1 μm 0.004 Mil		0.5 μm 0.02 Mil
Accuracy (20°C (68°F)) ^*1		1 μm 0.04 Mil (p-p)		2 μm 0.08 Mil (p-p)		3 μm 0.12 Mil (p-p)	3.5 μm 0.14 Mil (p-p)
Measuring force ^*2	Downward mounting	1.2 N	0.4 N	1.2 N	0.4 N	2.1 N	3.2 N
	Side mounting	1.1 N	0.3 N	1.1 N	0.3 N	1.8 N	2.8 N
	Upward mounting	1.0 N	0.2 N	1.0 N	0.2 N	1.5 N	2.4 N
Operation indicator		2-color LED (red, green)
Applied pressure range		0.25 to 0.5 MPa
Pressure resistance		1.0 MPa
Environmental　resistance	Enclosure rating	IP67 ^*4	–	IP67 ^*4	–	IP67 ^*4
	Ambient temperature	0 to 55°C (32 to 131°F) (No freezing)
	Relative humidity	35 to 85% RH (No condensation)
	Vibration	10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions				10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions^*5
Materials	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	NBR	–	NBR	–	NBR
	Contact ^*3	TYPE304 Stainless steel, super-tough tungsten alloy		TYPE304, 440C Stainless steel
Sensor head cable		Optional (M8 connector)
Weight (excluding cable)		Approx. 145 g				Approx. 340 g	Approx. 405 g
Accessories		Refer to the instruction manual.
Type		Standard / Low stress (L) type (Sensor head for 12 mm 0.47")				Standard type (Sensor head　for 32 mm 1.26"/50 mm 1.97" range)
^1 Value when 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 The contact is included with the sensor. ^4 Make sure the air tube is connected to the air exhaust joint and that no foreign materials enter inside from the joint. ^*5 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".

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DIN-rail mount type amplifier unit(For the pulse output type)

Model	NPN	GT2-71N	GT2-72N	GT2-71CN	GT2-72CN	GT2-71MCN
	PNP	GT2-71P	GT2-72P	GT2-71CP	GT2-72CP	GT2-71MCP
Mounting method		DIN-rail mount
Type		Standard loose wire type		Standard connector type		Analog output, connector type
Main unit/Expansion unit ^*1		Main unit	Expansion unit	Main unit	Expansion unit	Main unit
Power supply voltage ^*1		10 to 30 VDC, including 10% ripple (P-P)				20 to 30 VDC, including 10% ripple (P-P)
Power consumption	Normal	2200 mW max. (30 V, 73.3 mA max.)				2700 mW max. (30 V, 90 mA max.)
	Power saving (Eco)	1700 mW max. (30 V, 56.7 mA max.)				2200 mW max. (30 V, 73.3 mA max.)
Display power	Measured value display	6 + 1/2-digit 7-segment LED (red)
	Other displays	2-color, 13-level bar LED display (red, green), indicators (red, green)
Display range		-199.999.9 to 199.999.9
Display resolution		0.1 μm 0.004 Mil
Sampling rate		1000 times/sec.
Control input	Timing input	Input time: 2 ms min.
	Preset input	Input time: 20 ms min.
	Reset input
	Bank input
Control output	HH	NPNopen collector, Applicable current: 50 mA,Maximum applicable voltage40 V Residual voltage at ON: 1 V max. * N.O./N.C switchable				—
	High	NPNopen collector, Applicable current: 50 mA,Maximum applicable voltage40 V Residual voltage at ON: 1 V max. * N.O./N.C switchable
	Go
	Low
	LL	NPNopen collector, Applicable current: 50 mA,Maximum applicable voltage40 V Residual voltage at ON: 1 V max. * N.O./N.C switchable				—
Analog output		—				4 to 20 mA, maximum load resistance: 350 Ω Analog output range can be changed as desired.
Response time		hsp (3 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s
Environmental resistance	Ambient temperature	-10 to +50°C (14 to 122°F)(No freezing)				-10 to +50°C (14 to 122°F) (GT2-71MCN/71MCP: -10 to +45°C (14 to 113°F) when expansion unit(s) is connected) (No freezing)
	Relative humidity	35 to 85% RH (No condensation)
	Vibration	10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions
Materials		Main body case: Polycarbonate, Key top: Polyacetal, Front sheet: PET, Cable: PVC
Power supply/I/O cable		—
Weight		Approx. 140 g (including power cable)		Approx. 70 g
Accessories		Instruction manual, Cover seal	None	Instruction manual, Cover seal	None	Instruction manual, Cover seal
^*1 Precautions when the GT2-70 Series is used with an expansion unit (excluding GT2-71D) Up to 15 amplifier units can be connected; main unit: 1 unit, expansion unit: 14 units. To use the DIN-rail mount type, be sure to mount the amplifier unit to a DIN-rail (using the metal bracket). When mounting additional units, be sure to use the end units (OP-26751). When mounting additional units, depending on the number of units to be added, confirm the following specification limitations. ［Up to 8 units (including main unit)］The power supply voltage is 20 to 30 VDC.The maximum applicable current for each output is 20 mA. ［Up to 9 to 15 units (including main unit)］The power supply voltage is 20 to 30 VDC.The maximum applicable current for each output is 10 mA (including DL-RB1A output current).The residual voltage at ON Is 1.5 V or less.

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Panel mount type amplifier unit

Model	NPN	GT2-75N	GT2-76N	GT2-100N	GT2-E3N
	PNP	GT2-75P	GT2-76P	GT2-100P	GT2-E3P
Mounting method		Panel mount		Panel mount/Screw mounting using optional mounting bracket	Installed into GT2-100N/100P (up to 3 boards)
Type		—
Main unit/Expansion unit ^*1		Main unit	Expansion unit	2 channels provided as standard. Addition of expansion boards allows expansion to 11 channels max.	Expansion unit (1 to 3 channels)
Power supply voltage ^*1		10 to 30 VDC, including 10% ripple (P-P)		20 to 30 VDC, including 10% ripple (P-P)	Supplied from GT2-100N/100P
Power consumption	Normal	2200 mW max. (30 V, 73.3 mA max.)		4500 mW max. (30 V, 150 mA max.)	4200 mW max. (30 V, 140 mA max.)^*2
	Power saving (Eco)	1700 mW max. (30 V, 56.7 mA max.)		3600 mW max. (30 V, 120 mA max.)^*2	4000 mW max. (30 V, 133.3 mA max.)
Display power	Measured value display	6 + 1/2-digit 7-segment LED (red)			—
	Other displays	2-color, 13-level bar LED display (red, green), indicators (red, green)
Display range		-199.999.9 to 199.999.9
Display resolution		0.1 μm 0.004 Mil
Sampling rate		1000 times/sec.
Control input	Timing input	Input time: 2 ms min.
	Preset input	Input time: 20 ms min.
	Reset input
	Bank input
Control output	HH	NPNopen collector, Applicable current: 50 mA,Maximum applicable voltage40 V Residual voltage at ON: 1 V max. * N.O./N.C switchable		NPNopen collector, Applicable current: 50 mA,Maximum applicable voltage40 V Residual voltage at ON: 1 V max. * N.O./N.C switchable (Applicable current decreases to 20 mA or lower when 2 or more sensor heads are connected to the GT2-100 Series.)
	High
	Go
	Low
	LL
Analog output		—
Response time		hsp (3 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s
Environmental resistance	Ambient temperature	-10 to +50°C (14 to 122°F) (No freezing)
	Relative humidity	35 to 85% RH (No condensation)
	Vibration	10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions		10 to 55 Hz, 0.15 mm 0.01"double amplitude, 2 hours in each of X, Y, and Z directions	10 to 55 Hz, 1.5 mm 0.06", double amplitude, 2 hours in each of X, Y, and Z directions
Materials		Main body case: Polycarbonate, Key top: Polyacetal, Front sheet: PET, Cable: PVC		Main body case: Polycarbonate, Key top: Polyacetal, Front sheet: PET	—
Power supply/I/O cable		12-core connector connection (Connecting cable included)		Power supply: Terminal block, I/O: 20-pin connector (MIL standard)	I/O: 30-pin connector (MIL standard)
Weight		Approx. 140 g (including panel mounting bracket, protective front cover and power cable)		Approx. 380 g	Approx. 80 g
Accessories		Panel mounting bracket, protective front cover, power cable, instruction manual, cover seal	Panel mounting bracket, protective front cover, power cable, expansion cable	Instruction manual, panel mounting bracket	None
^1 Precautions when the GT2-70 Series is used with an expansion unit (excluding GT2-71D) Up to 15 amplifier units can be connected; main unit: 1 unit, expansion unit: 14 units. To use the DIN-rail mount type, be sure to mount the amplifier unit to a DIN-rail (using the metal bracket). When mounting additional units, be sure to use the end units (OP-26751). When mounting additional units, depending on the number of units to be added, confirm the following specification limitations. ［Up to 8 units (including main unit)］The power supply voltage is 20 to 30 VDC.The maximum applicable current for each output is 20 mA. ［Up to 9 to 15 units (including main unit)］The power supply voltage is 20 to 30 VDC.The maximum applicable current for each output is 10 mA (including DL-RB1A output current).The residual voltage at ON Is 1.5 V or less. ^2 For GT2-100 Series, when the maximum number of sensor heads are connected and all units are set to power saving mode.

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DIN-rail mount type pulse output amplifier unit

Model		GT2-71D
Type	Installation type	DIN rail mount
	Main unit/expansion unit	Main unit
Number of expandable units		Cannot be extended
Power voltage		10 to 30 VDC, including 10% ripple (P-P), Class 2
Display indicator		Power (green), alarm (red), pulse output (green), input (green)
Pulse resolution		0.1 μm 0.004 Mil, 0.5 μm 0.02 Mil, 1 μm 0.04 Mil, 10 μm 0.039 Mil (selectable)
Power consumption		1,600 mW or less (at 30 V: 53.3 mA or less)
Minimum phase difference		0.5 μs, 2.5 μs, 5 μs, 25 μs (selectable)
Control input (origin return)		No-voltage input (with contacts, without contacts), input time: 20 ms or more
Output signal		90° phase difference from the A, B, and Z phases; differential square wave (conforms to EIA-422)
Output signal level		+5 V
Environmentalresistance	Operating ambient temperature	-10 to +50°C (no freezing)
	Operating ambient humidity	35 to 85% RH (No condensation)
	Vibration resistance	10 to 55 Hz, 1.5 mm 0.06" double amplitude for 2 hours in each of the X, Y, and Z directions
Material	Main unit case front cover	Polycarbonate (PC)
Weight		Approx. 110 g (including the power supply cable)