Photoelectric switches are what we generally call sensors. **Standard GB7665-87 defines a sensor as: a device or device that can sense the specified measured part and convert it into a usable signal in accordance with certain rules, which is generally composed of a sensitive element and a conversion element.
The sensor is a kind of detection device, which can feel the measured information, and can change the detected and felt information into an electrical signal or other required form of information output according to certain rules, so as to meet the requirements of information transmission, processing, storage, display, recording and control. It is the link to complete automatic detection and automatic control.
Function:
The function of the sensor is often compared with the five major sensory organs of human beings**: Light sensor - vision Acoustic sensor - hearing Gas sensor - smell Chemical sensor - taste Pressure sensitive, temperature sensitive, fluid sensor - tactile Classification of sensitive components: (1) Physical class, according to physical effects such as force, heat, light, electricity, magnetism and sound. (2) Chemistry, according to the principle of chemical reactions. (3) Biological categories, according to enzymes, antibodies, hormones and other molecular recognition functions. Generally, according to its basic sensing function, it can be divided into ten categories, such as thermal elements, photosensitive elements, gas-sensitive elements, force-sensitive elements, magnetic sensitive elements, moisture-sensitive elements, sound-sensitive elements, radiation sensitive elements, color-sensitive elements and taste-sensitive elements (some people have divided sensitive elements into 46 categories).
Features (Features of the sensor)
The characteristics of the sensor include: miniaturization, digitization, intelligence, multi-functional, systematization, networking, it not only promotes the transformation and upgrading of traditional industries, but also may establish the best industry, and then become a new economic growth point in the 21st century. Miniaturization is based on the skills of microelectro-mechanical systems (MEMS), and has been successfully applied to silicon devices to make silicon pressure sensors.
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The difference between DC and AC contactors – we are blessed
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The difference between a force transducer and a load cell – we are blessed
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Introduction to laser encoders
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Static and dynamic characteristics of sensors – we are blessed
1. Static characteristics of the sensor
The static characteristics of a sensor are related to the static input signal, the output and input of the sensor. Since the input and output are moment-independent at this point, the connection between them (i.e., the static properties of the sensor) can be used in an algebraic equation without time variables.
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The main categories of encoders are as follows
1. Classification according to the way of engraving the disc is different
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Introduction to the sensor model
Proximity Switches:
NBB2-12GM50-E2 NBB2-12GM50-E0 NBN4-12GM50-E2
NBN4-12GM50-E0 NBB5-18GM50-E2 NBB5-18GM50-E0
NBN8-18GM50-E2 NBN8-18GM50-E0 NBN15-30GM50-E0
NBN15-3 ...
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What is Pulse Ranging Technology (PRT) – a sensor
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A common type of sensor – a sensor
Resistive
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Problems with differential pressure sensors – Blessing
1. Temperature
Excessive temperature is one of the common causes of differential pressure sensor failure, as there are many components of the differential pressure sensor that can only function properly within the specified temperature scale. During installation, if the sensor is exposed to temperatures beyond these temperature scales, it may be exposed to ...
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The selection of proximity sensors follows the essentials – the blessing of the United States
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The difference between a temperature and humidity transmitter and a temperature and humidity sensor – we are blessed
Let's start with the conceptual difference, the sensor is a kind of detection equipment, can sense the measured information, and can sense the information, according to the law to change the information into electrical signals or other required information output, in order to satisfy the information transmission, processing, storage, display, recording and manipulation ...
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Eltra Incremental Rotary Encoder Types
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Optical solid shaft incremental encoder Eltra. The couplings in these types are made of solid shafts.
· EL-ER 30 E/H；
· EH 38 A/B/D；
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Wireless HART technology for industrial processes
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Analysis of mechanical damage of encoder servo
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Introducing the P+F Ultrasonic Technology Series
In industrial use, ultrasonic sensors are characterized by high reliability and versatility. Since the ultrasonic sensor measurement method works reliably in almost all environmental conditions, it is possible to provide a stable connection for object detection or level measurement even in the most chaotic tasks.
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Introduction to the throttle azimuth sensor – Doubleblessed
What is the function of the throttle orientation sensor?
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The difference between fiber optic sensors and photoelectric sensors – we are blessed
Optical fiber sensor and photoelectric sensor are two typical sensors, which are widely used in production and measurement, so what is the difference between the two?
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Analysis of the use of various types of accelerometers
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There are three types of P+F proximity switches
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