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Panasonic Industry / Automation Controls

High Accuracy Eddy Current Type Displacement Sensor GP-A (Discontinued Products)

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  • Discontinued Products

  • Specifications

  • Dimensions

  • Circuit/ Wiring

  • Sensing characteristics

  • Cautions For Use

Ⅾiscontinued

Last time buy

September 30, 2018

We are sorry, the products have been discontinued. Please refer to the details of the discontinued products and the recommended substitutes list below.

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Discontinued Products

pic01-1

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Specifications

TypeFor 1 mm 0.039 in sensingFor 2 mm 0.079 in sensing
Non-threaded type sensor headNon-threaded type sensor headThreaded type sensor head
 Different frequency Different frequency Different frequency
Set model No.GP-A5SGP-A5SIGP-A8SGP-A8SIGP-A10MGP-A10MI
Sensing range0 to 1 mm
0 to 0.039 in		0 to 2 mm
0 to 0.079 in
Standard sensing objectIron sheet 8 x 8 x t 1 mm
0.315 x 0.315 x t 0.039 in		Iron sheet 12 x 12 x t 1 mm
0.472 x 0.472 x t 0.039 in
Supply voltage24 V DC ± 10 % Ripple P-P 10 % or less
Current consumption150 mA or less
Analog outputs
(Analog voltage output
Analog current output)		Analog voltage
・Output voltage: 0 to 5 V
・Output impedance: 100 Ω approx.
Analog current
・Output current: 4 to 20 mA
・Load resistance: 0 to 350 Ω
 Response frequency1.6 kHz (-3 dB)
Resolution0.04 % F.S.
LinearityWithin ±0.5 % F.S.
Alarm outputNPN open-collector transistor
・Maximum sink current: 100 mA
・Applied voltage: 30 V DC or less (between alarm output and 0 V)
・Residual voltage: 1.6 V or less (at 100 mA sink current)
0.4 V or less (at 16 mA sink current)
 Output operationTurns ON when the sensor head connection is improper or the sensor head cable is disconnected
Short-circuit protection-
External zero-adjustment
input		Input condition: Non-voltage contact or NPN open-collector transistor input
Signal condition: Low ... 0 to 1 V (duration 30 ms or more)
High ... 5 to 30 V, or open
Operation: Low ... External zero-adjustment setting
High ... External zero-adjustment ineffective
Zero-adjustment setting methodPush button setting / External input setting
Power indicatorGreen LED (lights up when the power is ON)
Over indicatorOrange LED (lights up when sensing range is exceeded)
Alarm indicatorYellow LED (lights up when the alarm output is ON)
Adjustments(1) Shift adjustment (by push-buttons),
(2) Span adjustment (by 14-turn adjuster)
Temperature
characteristics
(Note 2)		Sensor head0.5 μm/℃
0.020 mil/℃		0.6 μm/℃
0.024 mil/℃		1 μm/℃
0.039 mil/℃		0.6 μm/℃
0.024 mil/℃		1 μm/℃
0.039 mil/℃
Amplifier0.4 μm/℃
0.016 mil/℃		0.8 μm/℃ 0.031 mil/℃
ProtectionSensor headIP67 (IEC), IP67G
Amplifier-
Ambient
temperature		Sensor head-10 to +55 ℃ +14 to +131 ℉,
Storage: -20 to +70 ℃ -4 to +158 ℉
Amplifier0 to +50 ℃ +32 to +122 ℉ (No dew condensation allowed),
Storage: 0 to +50 ℃ +32 to +122 ℉
Ambient humidity35 to 85 % RH, Storage: 35 to 85 % RH
Voltage withstandabilitySensor head250 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistanceSensor head20 MΩ, or more, with 250 V DC megger between all
supply terminals connected together and enclosure
Vibration resistanceSensor head10 to 55 Hz frequency, 1.5 mm 0.059 in double amplitude in
X, Y and Z directions for two hours each
Amplifier10 to 150 Hz frequency, 0.75 mm 0.030 in double amplitude in
X, Y and Z directions for two hours each
Shock resistanceSensor head500 m/s2 acceleration (50 G approx.) in X, Y and Z directions five times each
Amplifier100 m/s2 acceleration (10 G approx.) in X, Y and Z directions five times each
MaterialSensor headEnclosure: Stainless steel (SUS303)
Sensing part: Polyalylate		Enclosure: Stainless steel (SUS303)
Sensing part: ABS
AmplifierEnclosure: ABS
CableSensor headConnector attached high frequency coaxial cable, 3 m 9.843 ft long
Cable length (Note 3)AmplifierTotal length up to 100 m 328.084 ft is possible with 0.3 mm2, or more, cable.
Net WeightSensor head40 g approx.50 g approx.
(Note 4)
Amplifier170 g approx.
AccessoriesAdjusting screwdriver: 1 pc.Nut: 2 pcs.,
Toothed lock
washer: 1 pc.
Adjusting
screwdriver: 1 pc.
TypeFor 5 mm 0.197 in sensingFor 3 mm 0.118 in sensing
Threaded type sensor headFront sensing type sensor head
 Different frequency Different frequency
Set model No.GP-A12MLGP-A12MLIGP-A14FGP-A14FI
Sensing range0 to 5 mm 0 to 0.197 in0 to 3 mm 0 to 0.118 in
Standard sensing objectIron sheet 30 x 30 x t 1 mm
1.181 x 1.181 x t 0.039 in		Iron sheet 15 x 15 x t 1 mm
0.591 x 0.591 x t 0.039 in
Supply voltage24 V DC ± 10 % Ripple P-P 10 % or less
Current consumption150 mA or less
Analog output
(Analog voltage output
Analog current output)		Analog voltage
・Output voltage: 0 to 5 V
・Output impedance: 100 Ω approx.
Analog current
・Output current: 4 to 20 mA
・Load resistance: 0 to 350 Ω
 Response frequency1.6 kHz (-3 dB)
Resolution0.04 % F.S.
LinearityWithin ±0.5 % F.S.
Alarm outputNPN open-collector transistor
・Maximum sink current: 100 mA
・Applied voltage: 30 V DC or less (between alarm output and 0 V)
・Residual voltage: 1.6 V or less (at 100 mA sink current)
0.4 V or less (at 16 mA sink current)
 Output operationTurns ON when the sensor head connection is improper or the sensor head cable is disconnected
Short-circuit protection-
External zero-adjustment
input		Input condition: Non-voltage contact or NPN open-collector transistor input
Signal condition: Low ... 0 to 1 V (duration 30 ms or more)
High ... 5 to 30 V, or open
Operation: Low ... External zero-adjustment setting
High ... External zero-adjustment ineffective
Zero-adjustment setting
method		Push button setting / External input setting
Power indicatorGreen LED (lights up when the power is ON)
Over indicatorOrange LED (lights up when sensing range is exceeded)
Alarm indicatorYellow LED (lights up when the alarm output is ON)
Adjustments(1) Shift adjustment (by push-buttons),
(2) Span adjustment (by 14-turn adjuster)
Temperature
characteristics
(Note 2)		Sensor head1.5 μm/℃
0.059 mil/℃		2.5 μm/℃
0.098 mil/℃		0.9 μm/℃
0.035 mil/℃		1.5 μm/℃
0.059 mil/℃
Amplifier2.0 μm/℃ 0.079 mil/℃1.2 μm/℃ 0.047 mil/℃
ProtectionSensor headIP67 (IEC), IP67G
Amplifier-
Ambient
temperature		Sensor head-10 to +55 ℃ +14 to +131 ℉,
Storage: -20 to +70 ℃ -4 to +158 ℉
Amplifier0 to +50 ℃ +32 to +122 ℉ (No dew condensation),
Storage: 0 to +50 ℃ +32 to +122 ℉
Ambient humidity35 to 85 % RH, Storage: 35 to 85 % RH
Voltage withstandabilitySensor head250 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistanceSensor head20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistanceSensor head10 to 55 Hz frequency, 1.5 mm 0.059 in amplitude in X, Y and Z directions for two hours each
Amplifier10 to 150 Hz frequency, 0.75 mm 0.030 in amplitude in X, Y and Z directions for two hours each
Shock resistanceSensor head500 m/s2 acceleration (50 G approx.) in X, Y and Z directions for five times each
Amplifier100 m/s2 acceleration (10 G approx.) in X, Y and Z directions for five times each
MaterialSensor headEnclosure: Brass (Nickel plated)
Sensing part: Nylon		Enclosure: Stainless steel (SUS303)
Sensing part: ABS
AmplifierEnclosure: ABS
CableSensor headConnector attached high frequency coaxial cable, 3 m 9.843 ft long
Cable length
(Note 3)		AmplifierTotal length up to 100 m 328.084 ft is possible with 0.3 mm2, or more, cable.
Net WeightSensor head45 g approx. (Note 4)50 g approx.
Amplifier170 g approx.
AccessoriesNut: 2 pcs., Toothed lock washer: 1 pc.
Adjusting screwdriver: 1 pc.		2 pcs. each of M3 countersunk
head screws, spring washers,
plain washers and M3 nuts
Adjusting screwdriver: 1 pc.

Note 1 : Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉.

Note 2 : These values are for a range which is 20 to 60 % of the maximum sensing distance.

Note 3 : Take care that the output voltage is reduced due to the resistance of the wiring cable.

Note 4 : The given weight of the threaded type sensor head is the value including the weight of the nuts and the toothed lock washer.

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Dimensions

  • Unit: mm in

Sensor head

GP-A5S(I)

GP-A5S(I)

GP-A8S(I)

GP-A8S(I)

GP-A10M(I)

GP-A10M(I)

GP-A12ML(I)

GP-A12ML(I)

GP-A14F(I)

GP-A14F(I)

Amplifier

All models

All models

Cover removed condition

Cover removed condition

MS-SS5 MS-SS8

Mounting bracket for GP-A5S(I) (Optional),
Mounting bracket for GP-A8S(I) (Optional)

MS-SS5 MS-SS8

Material:Nylon 66

------------------------------ Tab4 showing ------------------------------

I/O Circuit and Wiring diagrams

I/O circuit diagram

I/O circuit diagram

Notes:

1)

In case of using the analog voltage output, connect a device having a high input impedance. Also, take care that the output voltage is reduced due to the resistance of the wiring cable.

2)

The alarm output is not incorporated with a short-circuit protection circuit. Do not connect it directly to a power supply or a capacitive load.

Symbols･･･

D1: Input protection diode
D2: Reverse supply polarity protection diode
ZD: Surge absorption zener diode
Tr : NPN output transistor

Wiring diagram

Note:

After the wiring, make sure to fit the terminal covers. The terminal cover having a concave depression at the top should be fitted on the side having terminal Nos. 1 to 4.

*1

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Sensing characteristics

Correlation between material and output voltage / current

The GP-A series is made for all types of standard iron sensing objects. The graph below describes the output discrepancies that occur when detecting different types of metals.

GP-A5S(I)

GP-A5S(I)

GP-A8S(I) GP-A10M(I)

GP-A8S(I) GP-A10M(I)

GP-A12ML(I)

GP-A12ML(I)

GP-A14F(I)

GP-A14F(I)

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Cautions For Use

  • Never use this product as a sensing device for personnel protection.
  • In case of using sensing devices for personnel protection, use products which meet laws and standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in each region or country.

・Make sure to use in combination the sensor head and amplifier which have the same production serial number (5 digits). Since adjustment is done before shipment, if items with different production serial numbers are combined, the sensing characteristics will deteriorate even if they have the same model number.

・The length of the sensor head cable cannot be changed.

Linearity in case of disc-shaped or cylindrical objects

Model No.Iron disc diameter ø (mm in)Iron cylinder diameter ø (mm in)
GP-A5S(I)12 0.47210 0.394
GP-A8S(I)12 0.47210 0.394
GP-A10M(I)12 0.47210 0.394
GP-A12ML(I)30 1.11850 1.969
GP-A14F(I)12 0.47210 0.394
  • In case the sensing object is disc-shaped or cylindrical, the linearity of the analog output varies with the sensing object size. In such a case, conduct zero adjustment when close mounting and, by adjusting to the maximum sensing distance and to 5 V as the voltage output (current output 20 mA), linearity (±0.5 % F.S.) can be attained on a full-scale if the sensing object’s size is larger than those described in the table below.
<In case of disc>

Linearity in case of disc-shaped or cylindrical objects In case of disc

<In case of cylinder>

Linearity in case of disc-shaped or cylindrical objects In case of cylinder

Mounting sensor head

Mounting with set screw

<Non-threaded type sensor head>

Mounting with set screw Non-threaded type sensor head

Model No.A (mm in)Tightening torque
GP-A5S(I)5 0.197 or more0.44 N·m
GP-A8S(I)0.58 N·m

Note:

Do not apply excess torque.

Mounting with nut

<Threaded type sensor head>

Mounting with nut GP-A10M(I)

Model No.B (mm in)Tightening torque
GP-A10M(I)7 0.276 or more9.8 N·m
GP-A12ML(I)14 0.551 or more20 N·m

Note: Install in such as way so that the nut does not protrude from the screw.

Mounting GP-A14(l)

  • The tightening torque should be under the value given below.
  • Make sure to use an M3 or smaller set screw having a cup-point.
  • The tightening torque should be under the value given below.

Mounting GP-A14(l)


Distance from surrounding metal

<Embedding of the sensor in metal>


  • GP-A14F(I) can be used by being completely embedded in metal.
    However, the surrounding metal should not protrude beyond the
    sensing face.

<Non-threaded type sensor head
threaded type sensor head>

Distance from surrounding metal Non-threaded type sensor head threaded type sensor head

<Front sensing type sensor head>

Distance from surrounding metal Front sensing type sensor head

Model No.C (mm in)D (mm in)
GP-A5S(I)ø18 ø0.7094 0.157
GP-A8S(I)
GP-A10M(I)7 0.276
GP-A12ML(I)ø50 ø1.96914 0.551

Mutual interference

  • When two or more sensor
    heads are installed in
    parallel or face to face, since
    the specifications may not
    be met, keep the minimum
    separation distance
    specified in the table below.

<Non-threaded type sensor head
threaded type sensor head>

Mutual interference Non-threaded type sensor head threaded type sensor head

<Front sensing type sensor head>

Mutual interference Front sensing type sensor head

Model No.E (mm in)
Between “I” type and non-“I” typeBetween two “I” types or two non-“I” types
GP-A5S(I)11 0.433 36 1.417
GP-A8S(I)
GP-A10M(I)		11 0.433 38 1.496
GP-A12ML(I)14 0.551130 5.118
GP-A14F(I) 0 0 30 1.181

Notes:

1) “I” type is different frequency type.

2) If the required resolution is lower than the specification (0.04 % F.S.), it is possible to bring the sensor heads nearer than the separation distances given in the table above. For further details, please contact our office.

  • As metal around the sensor may affect the sensing performance, pay attention to the following points.
  • Since the analog output may change if the sensor is completely embedded in metal, keep the minimum distance specified in the table below.

Dimensions of suitable crimp terminals

Dimensions of suitable crimp terminals

Note:

Please use crimp terminals which have insulation sleeves.
Recommended crimp terminal: Type 1.25 – 3.0

Others

  • Do not use during the initial transient time (0.5 sec.) after the power supply is switched on.
  • Do not use the sensor at places having intense vibrations, as this can cause malfunction.

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