Proximity Sensors Flat Body (Part Numbers)

Question: How long is the detection distance of the proximity sensor

Answer: The sensing distance of the proximity sensor varies depending on the size and material of the detection object. The sensing distance increases with the shape of the detection object. When the volume reaches a certain value, the sensing distance no longer increases with the shape of the detection object, and becomes a fixed value. Generally, the smallest detection object that reaches a fixed sensing distance is called a standard detection object. The standard detection object is generally a square made of iron (Fe360) with the thickness of 1mm, and the larger of the sensing surface diameter and 3 times the sensing distance is taken as the side length.

Question: What needs to be paid attention to in the sensor selection?

Answer: In terms of parameters, it is mainly necessary to determine the main parameters such as product appearance and size, detection distance, operating voltage, output mode (NPN/PNP), output form (normally open/normally closed), and also to ensure the outlet form (direct outlet/connector type), cable length, bending resistance, frequency requirements, ambient temperature requirements, waterproof and dust-proof requirements (IP degree) and other parameters of the sensor.

Question: What is the meaning of shielded and non-shielded for proximity sensors?

Answer: The shielded type sensor can be embedded in metal for use, while the non-shielded type cannot be embedded in metal, but its operating distance for detection is longer than the shielded type. Shielded type installation: The sensor is embedded in the metal base, and its effective sensing working surface is flush with the base surface. Non-shielded type installation: The sensor is not embedded in the metal base, and its effective sensing working surface must keep a certain space from its base. For proximity sensors of the same specifications, the non-shielded type can obtain the maximum sensing distance. The advantages of the sensor with shielded type installation are that they have better mechanical protection performance and stronger anti-interference ability than the sensor with unshielded type installation. The sensor with shielded type installation has approximately 69% of the acting distance compared to the sensor with non-shielded type installation.

Question: What is the response time of the flat body proximity sensor?

Answer: The response time is typically in the range of ≤0.5 ms. This makes it suitable for high-speed detection applications such as conveyor systems and automated machinery.

Question: Can these sensors detect non-metallic objects?

Answer: No, these are inductive proximity sensors, meaning they are designed to detect metallic objects only. For non-metallic detection, a capacitive proximity sensor (e.g. OMRON E2K-F series) should be used.

Question: How does the flat body design benefit the installation of proximity sensors?

Answer: The flat body design makes installation easier in confined or space-restricted areas, offering flexibility in various applications. Its slim profile is perfect for mounting in places where traditional cylindrical sensors may be too bulky, such as small machinery, robotics, or conveyor systems.

Question: Can flat body proximity sensors be used in food processing environments?

Answer: Yes, if they meet appropriate certifications for hygiene standards (such as FDA or EHEDG), flat body proximity sensors can be used in food processing environments. Their flat design makes them easier to clean, which is beneficial for industries that require strict cleanliness.

Question: Are flat body proximity sensors available with a built-in output for controlling machinery?

Answer: Yes, many flat body proximity sensors come with built-in output options, such as NO (Normally Open) or NC (Normally Closed) contacts, or even analogue outputs. These outputs can be used to trigger control mechanisms in automated systems.

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