TAKEX GR Series LED Mark Sensors

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TAKEX GR Series LED mark sensors
TAKEX GR Series LED mark sensors
TAKEX_GR

LED Mark Sensors

  • TAKEX GR Series LED mark sensors use convergent reflective detection for mark-to-background contrast sensing.
  • Red, green, and blue LED models are available, with minimum mark widths down to 0.5 mm.
  • The series offers NPN or PNP output, sensitivity adjustment, anti-interference, and IP67 protection.
  • Brand TAKEX Takenaka Engineering Co., Ltd.
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Features
  • Red, green, and blue light sources: The 12 mm models are available with red, green, or blue LEDs for selecting suitable contrast between the target mark and background.
  • Marks down to 0.5 mm: GR12RSN, GR12GSN, and GR12BSN side-on models provide an approximately 1 mm spot and can detect marks as narrow as 0.5 mm under specified mark and background conditions.
  • Multiple sensing ranges: The lineup includes fixed 12 mm models, GR40RN with a 20–70 mm range, and GR60RN with a 30–90 mm range.
  • NPN or PNP output models: Major configurations are available with NPN or PNP open-collector output and selectable Light-ON/Dark-ON operation.
  • IP67 resin-filled housing: The fully resin-filled IP67 housing supports environments where sensors may be washed together with production equipment.
Specification
ItemSpec.
Product typeLED mark sensor
Detection methodConvergent reflective
Power supply12–24VDC ±10%, ripple 10% or less
Control outputNPN or PNP open collector depending on model
Operation modeLight-ON / Dark-ON selectable
Light sourceRed, green, or blue LED depending on model
Response time0.5–1 ms or less depending on model
Reception/operation indicatorRed or orange LED depending on model
Stability indicatorGreen LED
Case materialPolyarylate
Lens materialPolycarbonate
Ambient light3,000 lx or less
Operating temperature−25 to +55°C, non-freezing
Ambient humidity35–85% RH, non-condensing
Protective structureIP67
WeightApprox. 80 g

Specification notes

  • Light source selection depends on mark and background colors: Red, green, and blue LED models provide different contrast depending on the color combination of the target mark and background.
  • Detecting distance and minimum mark width vary by model: 12 mm side-on models detect marks down to 0.5 mm, while GR40RN is rated at 1 mm and GR60RN at 2 mm under their specified test conditions.
  • The series also includes the GR12UVS ultraviolet luminescence mark sensor, designed for hidden and fluorescent mark detection. Direct viewing of the ultraviolet light source should be avoided.
FAQ

Q1: What is the TAKEX GR Series?
A: The GR Series consists of LED mark sensors using convergent reflective detection to identify contrast between a mark and its background.


Q2: What light sources are available?
A: The main lineup includes red, green, and blue LED models. The GR12UVS ultraviolet luminescence mark sensor is also provided for special mark detection.


Q3: What detecting distances are available?
A: The lineup includes 12 ±2 mm models, GR40RN with 20–70 mm sensing, and GR60RN with 30–90 mm sensing.


Q4: What is the smallest detectable mark width?
A: GR12RSN, GR12GSN, and GR12BSN side-on models can detect marks as narrow as 0.5 mm under specified test conditions.


Q5: Are NPN and PNP models available?
A: Yes. Major models are available with either NPN or PNP open-collector output.


Q6: Is Light-ON/Dark-ON operation selectable?
A: Yes. The operation mode can be selected with a switch.


Q7: Can sensitivity be adjusted?
A: Yes. Major models provide a four-turn non-stop sensitivity adjustment.


Q8: Does the GR Series include anti-interference?
A: Yes. Mutual interference prevention is available for installations with up to two sensors.


Q9: What is the protection rating?
A: The GR Series has an IP67 protective structure with a fully resin-filled housing.


Q10: What is the GR12UVS designed to detect?
A: The GR12UVS ultraviolet luminescence mark sensor is designed for hidden and fluorescent marks.

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