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Discontinued
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Compact & Low Price Inductive Proximity Sensor GL (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.

Last time buy September 30, 2021
 
Cautions For Use

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.

Mounting

GL-8U type

  • Make sure to mount with an M3 (length 12 mm 0.472 in or more) truss head screw with a tightening torque of 0.5 N·m or less.
    (Do not use a flat head screw or a pan head screw.)
Mounting GL-8U type

GL-18H/18HL type

  • The tightening torque should be 0.5 N·m or less.
  • To mount the sensor with a nut, the thru-hole diameter should be ø3.4 mm ø0.134 in.
  • Screws, nuts or washers are not supplied. Please arrange them separately.
Mounting GL-18H/18HL type

Influence of surrounding metal

  • When there is a metal near the sensor, keep the minimum separation distance specified below.

GL-18H/18HL type

Influence of surrounding metal
  GL-18H□ GL-18HL□
A 5 mm 0.197 in 25 mm 0.984 in
B 20 mm 0.787 in 60 mm 2.362 in
C 0 mm 0 in 20 mm 0.787 in (Note)
D 5 mm 0.197 in 30 mm 1.181 in
Note: When mounting the GL-18HL□ to an insulator or using the attached sensor mounting bracket, “C” becomes 0 mm 0 in.

Mutual interference prevention

  • When two or more sensors are installed in parallel or face to face, keep the minimum separation distance specified below to avoid mutual interference.
GL-18H/18HL type

Mutual interference prevention
  E F
GL-18H type Between “I” type and
non “I” type.		 0 mm (Note 2)
0 in		 20 mm
0.787 in
Between two “I” types or
two non “I” types.		 40 mm
1.575 in		 70 mm
2.756 in
GL-18HL type Between “I” type and
non “I” type.		 20 mm
0.787 in		 40 mm
1.575 in
Between two “I” types or
two non “I” types.		 130 mm
5.118 in		 200 mm
7.874 in

Notes:

1) “I” in the model No. specifies the different frequency type.
2) Close mounting is possible for up to two sensors. When mounting three sensors or more at an equal spacing, align the model with “I” and the model without “I” alternately.
The minimum value of dimension “E” should be as given below. GL-18H type: 11 mm 0.433 in

Sensing range

  • The sensing range is specified for the standard sensing object.
    With a non-ferrous metal, the sensing range is obtained by multiplying with the correction coefficient specified below.
    Further, the sensing range also changes if the sensing object is smaller than the standard sensing object or if the sensing object is plated.

Correction coefficient
  GL-8U type GL-18H type GL-18HL type
Iron 1 1 1
Stainless steel
(SUS304)		 0.80 approx. 0.68 approx. 0.65 approx.
Brass 0.54 approx. 0.45 approx. 0.42 approx.
Aluminum 0.52 approx. 0.43 approx. 0.41 approx.

Wiring

  • Please carry out the wiring carefully since protection circuit against reverse power supply connection is not incorporated. (Excluding GL-8U type)
  • The output does not incorporate a short-circuit protection circuit. Do not connect it directly to a power supply or a capacitive load. (Excluding GL-8U type)
  • Make sure that the power supply is off while wiring.
  • Verify that the supply voltage variation is within the rating.
  • If power is supplied from a commercial switching regulator, ensure that the frame ground (F.G.) terminal of the power supply is connected to an actual ground.
  • In case noise generating equipment (switching regulator, inverter motor, etc.) is used in the vicinity of this sensor, connect the frame ground (F.G.) terminal of the equipment to an actual ground.
  • Do not run the wires together with high-voltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction.

Others

  • Do not use during the initial transient time (50ms) after the power supply is switched on.
  • Take care that the sensor does not come in direct contact with oil, grease, or organic solvents, such as, thinner, etc.
  • Make sure that the sensing end is not covered with metal dust, scrap or spatter. It will result in malfunction.

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Cautions For Use
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