(1) Fork photoelectric sensor
Placing a light emitter and a sticker face to face on either side of a slot is a fork photonics. The luminaire can announce infrared or visible light, and the luminaire can receive light in an unobstructed environment. However, when the detected object passes through the slot, the light is blocked and the photoelectric switch is activated. Output a switch control signal, block or turn on the load current, and then complete a control action. The detection interval of the groove switch is generally only a few centimeters due to the overall layout.
(2) Thru-beam photoelectric sensor
If the light emitter and receiver are separated, the detection interval can be increased. The photoelectric switch composed of a light emitter and a light receiver is called a through-beam photoelectric switch, referred to as a through-beam photoelectric switch. Its detection interval can be several meters or even tens of meters. When using, the luminaire and the receiver are respectively installed on both sides of the diameter of the detected object, and the detector outputs a switch control signal on the action after the detection object has passed.
(3) Reflector type photoelectric switch
The luminaire and the receiver are loaded into the same device, a reflector is installed in front of it, and the photoelectric control is called the reflector reflection (or mirror reflection type) photoelectric switch. Under normal conditions, the light announced by the luminaire is reflected back by the reflector and received by the receiver; Once the light is covered by the detected object and the receiver cannot receive the light, the photoelectric switch will act and output a switch control signal.
(4) Diffusion reflection photoelectric switch
It also has a light emitter and a light collector in the detection head, but there is no reflector on the front. In general, it is not possible to find a light receiver announced by a luminaire. When the detector passes by and covers the light and reflects the light sector, the receiver receives the light signal and outputs a switching signal.
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Examples of applications for ifm inductive sensors in the industry
Spindle speed detection
In order to prevent damage to wind turbines from overspeeding, the rotational speed is detected using inductive sensors and evaluated using safety-relevant speed monitors. The ifm IFS24X series of inductive sensors is equipped with M12 housing (IGS24X series with M18 housing), ...
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Common faults in eddy-current sensors – ifm
The eddy-current displacement sensor is a commonly used measuring instrument, which can accurately measure the static and dynamic relative displacement changes between the measured body (if necessary, a metal conductor) and the end face of the probe, and has the advantages of flexible use, stable function, high reliability and simple protection.
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Faulty temperature sensor in cold storage – ifm
1. The exhaust temperature of the refrigeration unit is high, the coolant level of the refrigeration unit is too low, the oil cooler is dirty, the oil filter core is blocked, the temperature control valve is faulty, the oil-off solenoid valve is not energized or the coil is damaged, the oil-cut solenoid valve diaphragm is broken or aging, the fan motor is faulty, the cooling fan is damaged, and the exhaust pipe is not ...
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Precautions for the use of sensors and installation requirements - ifm
Precautions for using sensors:
1) The sensor should not be installed in the following places: direct sunlight, high temperature, frost, and corrosive gas.
2) Do not use the same wiring pipe or wiring groove as the power line and power line to connect the wire.
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TCC temperature sensor won the "Red Dot Design Award 2020"
The TCC temperature sensor was unanimously recognized by the jury and won the Red Dot Design Award 2020 for its cost-effective solution with its excellent design, ideal cleaning performance and high-quality materials.
ifm TCC ...
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General knowledge of controlled systems for ifm controllers
Principles of the control system of IFM controllers:
The IFM ifm controller is a process that continues to detect the unit to be manipulated (control variable x) and compares it with the reference variable w, and according to the results of the comparison, the control variable is affected to get used to the reference variant. In most cases, ...
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How ifm sensors determine the exact installation location
When installing an ifm sensor, the first thing to do is to confirm the orientation of the sensor and then to install it correctly. So how do we confirm the orientation of the sensor?
The ifm sensor confirms the detailed orientation of the device ...
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What are the typical designs of torque sensors – ifm
Unlike load cells or force transducers, the measuring body of a torque transducer is not subjected to a tension load when used, but is torsionally affected by lever torque or torque. Therefore, torque sensors require special strain gauges to measure this type of load, i.e. torque. Canon...
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How ifm inductive sensors work
How an inductive sensor works: An inductive sensor consists of three parts: an oscillator, a switching circuit, and an amplified output circuit. The oscillator produces an alternating magnetic field. When a metal target approaches this magnetic field and reaches the sensing distance, eddy currents are generated within the metal target, resulting in ...
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Choice of pressure sensor – ifm
The first step in selecting a pressure sensor is to determine the pressure to be measured. Exciter sensors are divided into mechanical pressure and pneumatic pressure (hydraulic). The mechanical pressure unit is generally N.KN.KGF, etc. The pneumatic and hydraulic units are generally KPA, MPa, PSI, etc. This article describes the selection of mechanical pressures.
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Analysis of the characteristics of the ifm PN series pressure sensor
360-degree comprehensive dissection from the inside to the outside, the perfect characteristics of the net red PN series pressure sensor
Superior corrosion resistance
Ordinary pressure sensors use metal diaphragms, and PN pressure sensors use ceramic diaphragms to sense pressure, ...
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DV Series Signal Light Wins "Red Dot Design Award"
On July 9, 2018, the grand Red Dot Awards ceremony was held at the Aalto Theater in Essen, Germany, and the prestigious "Red Dot Planning Award" 2018 was presented.
This year's contestants from 59 countries paid tribute to the Red...
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Load cell range and accuracy – ifm
1. Sensor scale:
1) Normal use (static experiment or quasi-static experiment, when the frequency of application is not high, the scale of the sensor should be selected to consider the measured force value, as well as the component of the auxiliary tool (test fixture), etc.).
2) When used dynamically, the scale of the sensor is generally larger than the ...
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Precautions for sensor installation – ifm
Temperature sensor
1. The sensor should be firmly grounded, and the wire side of the sensor should not be short-circuited.
2. The thermistor of the moving magnet water thermometer sensor will increase with the temperature and the resistance value will decrease.
Fuel level sensor
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Difference Between Pressure Sensors and Pressure Transmitters – ifm
The pressure sensor usually refers to the component-level product of non-standard mV signal output, which is the core component of the pressure transmitter. Due to the weak signal, the demand increases at longer intervals.
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Essentials for the selection of ifm controllers
1. The ifm controller has a control function
Another important reference feature for the purchase of ifm controllers is the ability to control movements and other applications. Fulfillment of these functional requirements requires I/O, as well as a strong processor and the ability to prioritize missions.
Programmable Drum Switches (PDS...
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Precautions for the use of gas sensors – ifm
Amperometric gas sensors operate by reacting with the measured gas and generating an electrical signal proportional to the gas concentration. A typical amperometric gas sensor consists of a sensing electrode (or working electrode) and a counter electrode, separated by a thin electrolytic layer.
The gas passes through a porous membrane ...
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The difference between an ifm level sensor and a level switch
Many people are stupid and can't tell the difference between the liquid level sensor and the liquid level switch, and even think that they are the same instrument. In fact, there is a big difference between them. The level sensor does not necessarily display the liquid level, but outputs the liquid level in the form of an electrical signal. The liquid level controller is based on the liquid level sensor ...
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Methods for improving the accuracy of displacement sensors – ifm
The accuracy of the displacement sensor is the main factor affecting the displacement measurement and azimuth positioning accuracy of automation equipment. The actual measurement error of mechanical equipment includes system error and random error, and the more the number of measurements, the error value may show a normal distribution around both sides of a certain average value.
Flat...
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Wireless sensor network implementation method – ifm
1. Traditional communication protocol flooding. The message is sent to a nearby node in the form of a broadcast, and the node that receives the information continues to broadcast in the same way until the audio reaches its destination.
Pros: Simple and easy to do, no maintenance required.
Cons: A certain node may ...
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