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M30 Proximity Sensor

M30 Proximity Sensor
Details:
1. Multiple detection distances are available, ranging from 1.5mm (M8) to 15mm (M30), to meet the accuracy requirements of various applications

2. M08/M12/M18/M30 all-brass nickel-plated housing, high mechanical strength, impact and wear resistance

3. High sealing performance, protection rating of IP67 or higher, can withstand short-term immersion in water or high-pressure washing

4. The shielded/unshielded (embedded) design, multiple sensors can be installed closely side by side without generating electromagnetic interference

5. A wide range of standard lock nuts, cables, and other accessories are available to form a complete solution

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Description
Technical Parameters
Size & Wiring
Types of proximity switch inductive sensor

 

Inductive proximity sensors are non-contact sensors used only to detect metal objects. It is based on the laws of induction, which drives a coil with an oscillator once a metallic object approaches it. And which is mainly consists of 4 main components; coil, oscillator, schmitt trigger and output switching circuit

 

M30 proximity sensor It comes in two versions

 

  • Unshielded: The electromagnetic field generated by the coil is not restricted, allowing a wider and larger sensing distance
  • Shielding: The generated electromagnetic field is concentrated in the front, and the sides of the sensor coil are covered

 

Working principles of M30 proximity sensor

 

1. Provide alternating current to the coil to generate an electromagnetic detection field

2. When a metal object is close to a magnetic field, eddy currents will accumulate and cause the coil inductance to change.

3. When the coil inductance changes, the circuit that has been continuously monitoring will trigger the output switch of the sensor.

*Note: Inductive sensors will continue to oscillate even when the target is not present. This switch is only triggered when the object exists.

 

Advantages of inductive metal sensor

 

1. Non-contact detection

2. Environmental adaptability; resistant to conditions common in industrial fields, such as dust and dirt

3. Powerful and versatile in metal sensing

4. Quite cheap in terms of price

5. No moving parts, ensuring longer service life

 

FAQ

 

Q: Selection and testing of m30 proximity sensor

A: Proximity switch selection
For detection bodies made of different materials and different detection distances, different types of proximity switches should be selected to have a high performance-price ratio in the system. For this reason, the following principles should be followed in the selection:
 
  • When the detection object is made of metal material, a high-frequency oscillating proximity switch should be used. This type of proximity switch is most sensitive to detection of iron-nickel and A3 steel detection objects. For aluminum, brass and stainless steel detection objects, the detection sensitivity is low.
  • When the detection object is non-metallic material, such as wood, paper, plastic, glass and water, a capacitive proximity inductive metal sensor should be used.
  • When metal bodies and non-metals need to be detected and controlled at a long distance, photoelectric proximity switches or ultrasonic proximity switches should be used.
  • When the detection object is metal and the detection sensitivity is not high, low-priced magnetic proximity switches or Hall-type proximity switches can be used.

Proximity switch technical index detection
Measurement of action distance: when the action piece approaches the sensing surface of the proximity switch from the front, the distance at which the proximity switch operates is the maximum action distance of the proximity switch, and the measured data should be within the parameter range of the product.

Measurement of the release distance: when the action piece leaves the sensing surface of the proximity switch from the front and the switch changes from action to release, measure the maximum distance of the action piece from the sensing surface.

Determination of backlash H: the absolute value of the difference between the maximum action distance and the release distance.

Measurement of action frequency: use a speed-regulating motor to drive a bakelite disc, fix a number of steel pieces on the disc, adjust the distance between the switch sensing surface and the action piece, about 80% of the switch action distance, rotate the disc, and make the actions in sequence The chip is close to the proximity switch, and a speed measuring device is installed on the disc spindle. The output signal of the switch is shaped and connected to a digital frequency meter. At this time, start the motor and gradually increase the speed. Under the condition that the product of the speed and the action piece is equal to the frequency count, the frequency meter can directly read the action frequency of the switch.

Repeatability measurement: Fix the action piece on the measuring tool, from 120% of the switch action distance, close to the action area of the switch from the front of the switch sensing surface, and control the movement speed at 0.1mm/s. When the switch operates, read the reading on the measuring instrument, and then exit the action area to turn off the switch. Repeat this 10 times, and finally calculate the difference between the maximum and minimum values of the 10 measured values and the average value of the 10 times. The larger difference is the repetition accuracy error.

 

For more details of inductive switch M30 proximity sensor, please feel free to contact phone/wechat/whatsapp: +86 13530821762

 

 

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Standard unshielded cylindrical type inductive sensor specification
 

 

Model Detection distance Set distance Response difference
distance		 NPN/PNP Action mode Standard test substance Voltage Current consumption Load current Residual voltage Switch
frequency		 Protection circuit Ambient temperature Protection level
GPL-M30KU20-NO-2m 20mm 0～16mm Within 10% detection distance NPN Normally open Mild steel (ST37) Below 10-30VDC Below 8mA Below 100mA Below 1V 100Hz   -25～70℃ IP67
GPL-M30KU20-NC-2m NPN Normally closed
GPL-M30KU20-PO-2m PNP Normally open
GPL-M30KU20-PC-2m PNP Normally closed
GPL-M30LU20-NO-2m NPN Normally open
GPL-M30LU20-NC-2m NPN Normally closed
GPL-M30LU20-PO-2m PNP Normally open
GPL-M30LU20-PC-2m PNP Normally closed

 

Standard shielded cylindrical inductive proximity sensor specification
 

 

Model Detection distance Set distance Response difference
distance		 NPN/PNP Action mode Standard test substance Voltage Current consumption Load current Residual voltage Switch
frequency		 Protection circuit Ambient temperature Protection level
GPL-M30KS10-NO-2m 10mm 0-8mm Within 10% detection distance NPN Normally open Mild steel (ST37) Below 10-30VDC Below 8mA Below 100mA Below 1V 100Hz   -25～70℃ IP67
GPL-M30KS10-NC-2m Normally closed
GPL-M30KS10-PO-2m PNP Normally open
GPL-M30KS10-PC-2m Normally closed
GPL-M30LS10-NO-2m NPN Normally open
GPL-M30LS10-NC-2m Normally closed
GPL-M30LS10-PO-2m PNP Normally open
GPL-M30LS10-PC-2m Normally closed

 

Double distance unshielded circular inductor proximity sensor specification
 

 

Model Detection distance Set distance Response difference
distance		 NPN/PNP Action mode Standard test substance Voltage Current consumption Load current Residual voltage Switch
frequency		 Protection circuit Ambient temperature Protection level
GPL-M30KU30-NO-2m 30mm 0～22.5mm Within 10% detection distance NPN Normally open Mild steel (ST37) Below 10-30VDC Below 8mA 100mA or less Below 1V 100Hz   -25～70℃ IP67
GPL-M30KU30-NC-2m NPN Normally closed
GPL-M30KU30-PO-2m PNP Normally open
GPL-M30KU30-PC-2m PNP Normally closed
GPL-M30LU30-NO-2m NPN Normally open
GPL-M30LU30-NC-2m NPN Normally closed
GPL-M30LU30-PO-2m PNP Normally open
GPL-M30LU30-PC-2m PNP Normally closed

 

Double distance shielded circular inductor proximity sensor specification
 

 

Model Detection distance Set distance Response difference
distance		 NPN/PNP Action mode Standard test substance Voltage Current consumption Load current Residual voltage Switch
frequency		 Protection circuit Ambient temperature Protection level
GPL-M30KS15-NO-2m 15mm 0-11.25mm Within 10% detection distance NPN Normally open Mild steel (ST37) Below 10-30VDC Below 8mA 100mA or less Below 1V 250Hz   -25～70℃ IP67
GPL-M30KS15-NC-2m Normally closed
GPL-M30KS15-PO-2m PNP Normally open
GPL-M30KS15-PC-2m Normally closed
GPL-M30LS15-NO-2m NPN Normally open
GPL-M30LS15-NC-2m Normally closed
GPL-M30LS15-PO-2m PNP Normally open
GPL-M30LS15-PC-2m Normally closed

 

m30 proximity sensor 1

m30 proximity sensor 2

m30 proximity sensor 5

m30 proximity sensor 6

m30 proximity sensor 7

m30 proximity sensor 8

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