(1) Conductive plastic displacement sensor
The conductive plastic displacement sensor uses a special process to coat the insulating body with a DAP (didipropylphthalate) resistance paste, heat and polymerize to form a resistive film, or the DAP resistive powder is thermoplastic pressed into the groove of the insulating matrix to form a solid body as a resistive body. It is characterized by good smoothness, excellent resolution, good wear resistance, long life, low dynamic noise, high reliability and chemical corrosion resistance. Servo systems for space equipment, aircraft radar antennas, etc.
(2) Inductive displacement sensor
Inductive displacement sensor is a kind of linear device belonging to metal induction, after the power is turned on, an alternating magnetic field will be generated on the sensing surface of the switch, when the metal object is close to this sensing surface, eddy current is generated in the metal and absorbs the energy of the oscillator, so that the oscillator output fluctuates linear attenuation, and then according to the change of attenuation to complete the intention of detecting the object without touch.
(3) Photoelectric displacement sensor (photoelectric sensor):
Photoelectric displacement sensor is based on the amount of light flux blocked by the measured target to measure the displacement or size of the target. It is characterized by non-touch measurement, and can be measured continuously. Photoelectric displacement sensors are often used to measure the diameter of wires in succession or as edge orientation sensors in strip edge orientation control systems. The advantage is that the mechanical touch is eliminated, the life is long, the reliability is high, and the defect is the digital signal output, which is cumbersome to handle.
(4) Metal film displacement sensor
The resistive body of a metal film displacement sensor can be composed of an alloy film, a metal oxide film, a metal foil, etc. It is characterized by high resolution, high temperature resistance, small temperature coefficient, low dynamic noise and good smoothness. Metallic glass uranium sensors,
(5) Wound displacement sensor:
Wirewound displacement sensors are made by using constantan wire or nichrome wire as a resistor and winding it around an insulating frame. The winding potentiometer is characterized by small touch resistance, high precision, and small temperature coefficient, and its defects are poor resolution, low resistance, and poor high-frequency characteristics. It is mainly used as voltage divider, rheostat, zero adjustment and operation point in the instrument.
(6) Metallic glass uranium displacement sensor
The metal-glass uranium displacement sensor is made by coating the metal-glass uranium resistance paste on a ceramic substrate by screen printing method according to a certain pattern, and sintering at high temperature. The characteristics are: wide resistance scale, good heat resistance, strong overload capacity, moisture resistance, wear resistance, etc. are very good, it is a very good potentiometer variety, and the defects are touch resistance and current noise.
(7) Magnetic displacement sensor
The magnetic displacement sensor eliminates mechanical touch, has a long life, high reliability, and has high requirements for the working environment.
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The main function of the proximity switch is Turck
Check the distance
Detect the abortion, start, and passing direction of elevators and lifting equipment; Detect the orientation of the vehicle to prevent two objects from colliding with each other; Detect the set orientation of the working machine, the limit orientation of the moving machine or component; Detect the abort position of the rotary body and the opening or closing position of the valve.
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Turck encoder failure causes
1. Mechanical damage
The most common problem in servo response encoder is a variety of mechanical damage, including hardware damage to the internal component structure of the encoder (code disc, shaft and bearing, etc.) due to mechanical oscillation, collision, impact, wear and tear.
1) Oscillation
Pass...
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The pressure sensor is selected with an internal factor in mind – Turck
When selecting a pressure sensor, it is necessary to consider the internal elements of the sensor.
One of the many questions we often encounter in industrial production projects is what type of sensor should we choose, the characteristics of the sensor, the scale and the data requirements? Let's dissect exactly ...
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Five error factors for load cells – Turck
The load cell is a kind of electrical signal output device that converts the quality signal into a measurable electrical signal, and the load cell will inevitably make mistakes in use, so what is the reason for its error in daily life?
1. Characteristic error: ...
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Features of infrared proximity sensors – Turck sensors
1. Induction interval scale: 1-2000px, can be adjusted according to demand;
2. Small induction blind spot;
3. Integrate launch and reception;
4. Built-in microprocessor, with power-off recall function;
5. Easy to use ...
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Precautions should be taken when using tensile pressure sensors – Turck
A tensile pressure sensor is a device that converts a physical signal into a measurable electrical signal output. Precautions for Nala pressure sensors:
1. The appearance of the equipment should be as flat as possible, without oil or film, and the equipment should have sufficient strength and rigidity, ...
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Differential pressure sensor applications – Turck
A differential pressure sensor is a sensor used to measure the difference between two pressures, and is generally used to measure the pressure difference between the front and rear ends of a certain equipment or component.
Typical Applications:
It is used to measure the exhaust particle trap (DP ...
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Features of Turck's pressure sensors:
Turck's pressure sensors have good machining and heat treatment functions and have high compressive strength. Affected by the characteristics of low temperature, the correct selection of elastic sensitive components and strain gauge bridges is an important way to improve the strain gauge sensor: 1. High measurement range light accuracy, force sensing ...
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The basic building block of a load cell is Turck
Sensitive components
Load cell: A component that directly senses the measured (mass) and outputs other quantities that are definitely related to the measured amount. For example, the elastomer of the resistance strain gauge load cell is to transform the mass of the measured object into deformation; The elastomer of the capacitive load cell will be tested ...
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Precautions for the selection of load cells – Turck
1. Sensor scale:
(1) In normal use (static test or quasi-static test, the frequency of use is not high), the scale of the sensor should be selected to consider the force value of the measurement, but also to consider the weight of the auxiliary thing (test fixture) and so on.
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Pressure sensor for mobile devices – Turck
Turck presents the PT1100/2100 pressure sensors for mobile equipment such as mining, forestry, agriculture and construction machinery
In order to meet the application requirements of mobile devices, Turck has further expanded its product group of pressure sensors ...
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Turck's principle for selecting proximity switches
1. For different viewing bodies and different viewing distances of different raw materials, different types of Turck proximity switches should be selected to make them have a high performance-to-price ratio in the system, for which the following criteria should be followed in the selection:
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Vision sensors and displacement sensors – Turck sensors
1. Vision sensor
The low cost and ease of use of vision sensors have attracted machine designers and process engineers to integrate them into a wide range of applications that previously relied on manual, multiple photoelectric sensors, or no inspection at all. The industrial use of vision sensors includes inspection, measurement, measurement, ...
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Angular displacement sensor in action – Turck
The sensor uses a specially shaped rotor and wire-wound coil to simulate the linear displacement of a linear variable differential transducer (LVDT), which has high reliability and functionality, and the rotary motion of the rotor shaft produces a linear output signal that moves around the factory-preset zero position ± 60 degrees (120 in total). This...
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How to use linear displacement sensors – Turck
A linear displacement sensor is an electrical signal device that converts the linear mechanical displacement into a linear or arbitrary function relationship through the potentiometer element. In order to achieve the intention of measuring displacement, it is necessary to have a confirmation relationship between the change in displacement and the change in resistance. Usually...
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AC and DC contactor interchangeability
1. The AC contactor can replace the DC contactor in an emergency, and the suction time can not exceed 2 hours (because the heat dissipation of the AC coil is worse than the DC coil, which is determined by their different structures).
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Mechanical pressure selective dynamic sensor method – Turck
Select a dynamic pressure sensor to confirm the pressure to be measured, and the dynamic sensor is divided into measuring mechanical pressure and air pressure.
As for mechanical compression, the first thing to consider is whether the pressure is still the tension. If you only measure the pressure, you can choose a power sensor. If the demand measures the tension, then ...
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Turck has received two more awards at CAIMRS 2021
On March 19, 2021, the 2021 CAIMRS and Annual Selection and Awards Ceremony of China's Production Digital Service Summit hosted by Industrial Control Network was held in the form of real-time live broadcast in the cloud, and the results of the 19th Automation and Digitalization Annual Selection were released. Turck has once again been named one of the "Top 10 Companies of the Year".
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The main cause of encoder damage is Turck
1. Mechanical damage
The most common fault of servo response encoder is various mechanical damage, including hardware damage to the encoder's internal component structure (code disc, shaft, bearing, etc.) due to mechanical oscillation, collision, impact, wear and tear.
1) Oscillation
Pass...
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Turck's inductive proximity switch pigging inspection
The absence of impurities is the ultimate goal in all industries. This is especially important in the chemical industry, where important products are often handled. Pipes are particularly susceptible to contamination and fouling, which can ultimately lead to energy loss. Pigging systems are used to prevent corrosion and contamination of pipelines. The pigging pipe is transported through the pipeline ...
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