High Accuracy Eddy Current Type Displacement Sensor GP-A (Discontinued Products)
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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September 30, 2018 |
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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.
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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. |
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The length of the sensor head cable cannot be changed. |
Linearity in case of disc-shaped or cylindrical objects
- 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.
| Model No. |
Iron disc diameter ø (mm in) |
Iron cylinder diameter ø (mm in) |
| GP-A5S(I) |
12 0.472 |
10 0.394 |
| GP-A8S(I) |
12 0.472 |
10 0.394 |
| GP-A10M(I) |
12 0.472 |
10 0.394 |
| GP-A12ML(I) |
30 1.118 |
50 1.969 |
| GP-A14F(I) |
12 0.472 |
10 0.394 |
| <In case of disc> |
|---|
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| <In case of cylinder> |
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Mounting sensor head
- The tightening torque should be under the value given below.
- Make sure to use an M3 or smaller set screw having a cup-point.
<Non-threaded type sensor head>
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| Model No. |
A (mm in) |
Tightening torque |
| GP-A5S(I) |
5 0.197 or more |
0.44 N·m |
| GP-A8S(I) |
0.58 N·m |
| Note: |
Do not apply excess torque. |
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- The tightening torque should be under the value given below.
<Threaded type sensor head>
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| Model No. |
B (mm in) |
Tightening torque |
| GP-A10M(I) |
7 0.276 or more |
9.8 N·m |
| GP-A12ML(I) |
14 0.551 or more |
20 N·m |
| Note: Install in such as way so that the nut does not protrude from the screw. |
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| Distance from surrounding metal |
- As metal around the sensor may affect the sensing performance, pay attention to the following points.
<Embedding of the sensor in metal>
- Since the analog output may change if the sensor is completely embedded in metal, keep the minimum distance specified in the table below.
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<Non-threaded type sensor head
threaded type sensor head>
<Front sensing type sensor head>
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| Model No. |
C (mm in) |
D (mm in) |
| GP-A5S(I) |
ø18 ø0.709 |
4 0.157 |
| GP-A8S(I) |
| GP-A10M(I) |
7 0.276 |
| GP-A12ML(I) |
ø50 ø1.969 |
14 0.551 |
- GP-A14F(I) can be used by being completely embedded in metal.
However, the surrounding metal should not protrude beyond the
sensing face.
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- 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.
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<Non-threaded type sensor head
threaded type sensor head>
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<Front sensing type sensor head>
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| Model No. |
E (mm in) |
| Between “I” type and non-“I” type |
Between 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 0.551 |
130 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. |
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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> Cautions For Use
