For different raw material detection bodies and different detection intervals, different types of proximity sensors should be selected to make them have a high performance-to-price ratio in the system, for which the following principles should be followed in the selection:
1. When the detector body is a metal material: a high-frequency oscillating proximity sensor should be selected, which is the most sensitive to the detection of iron-nickel and A3 steel detectors. For aluminum, brass and stainless steel detectors, the detection sensitivity is low.
2. When the detection body is a non-metallic material: a capacitive proximity sensor should be selected, such as wood, paper, plastic, glass and water.
3. When metal and non-metal are to be detected and controlled at a distance: photoelectric proximity sensor or ultrasonic proximity sensor should be selected.
4. When the detection body is metal but the sensitivity requirements are not high: low-cost magnetic proximity sensor or Hall proximity sensor can be selected.
Elements of proximity sensor selection:
(1) Detection type: amplifier built-in type, amplifier separated type; (2) Shape: round, square, groove type; (3) Detection interval: in mm; (4) Detection objects: iron, steel, copper, aluminum, plastic, water, paper, etc.; (5) Working power supply: DC, AC, AC and DC general; (6) Output shape: normally open (NO), normally closed (NC); (7) Output method: two-wire type, three-wire type (NPN, PNP); (8) Shielded and unshielded; (9) Wire lead-out type, plug-in type, plug-in relay type; (10) Response frequency: several objects can be detected in one second
|
More on that
|
The steps of the use of the photoelectric switch
1. Self-conditioning. At the beginning of use, please check whether the switch itself is defective and whether the appearance is defective.
2. When using the EL130 photoelectric switch to avoid obstructions, some goods such as colored goods. Less reflective goods. Goods with large gaps between small pieces ...
|
|
The structure of proximity sensor switches – we are blessed
1. Durability
The reason why the switch has such a long life is that the switch acts as elastic from the vertical direction of the elastic membrane. Although millions of peristalsis are carried out after the elastic membrane, because the creep rate is very small, only 0.1 - 0.3m ...
|
|
Pressure Transmitter Verification Regulations
A pressure transmitter is a type of instrument that converts a pressure variable into a consistent output signal that can be transmitted, and there is a given continuous function relationship between the output signal and the pressure variable, which is generally a linear function. Pressure variables include positive and negative pressure, differential pressure and pressure. Pressure transmitters are available in electric and ...
|
|
Installation and maintenance of the FDH-1 bus facility
A smooth production process is the policy that every production manager strives to achieve. In order to accomplish this policy, a high-performance automation system is required. With the new FDH-1 handheld bus diagnostic device, you will be on your way to maximizing the availability of your equipment.
|
|
Cable protection systems for harsh conditions
In addition to getting used to mechanical shock, pressure, and tensile strain, sensor cables are often exposed to chemical environments. While traditional sensor cable planning is often not sufficient to meet these requirements, the new cable maintenance system has been developed with this intention in mind, guaranteeing ...
|
|
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.
...
|
|
Analysis of the use of P+F encoders
1. Grating pollution This will reduce the signal output amplitude, and the oil must be quietly wiped off with absorbent cotton dipped in anhydrous alcohol.
2. Encoder connection cable failure: the probability of this fault is high, and it is often encountered in maintenance, so it should be a priority element. Generally, the encoder cable is broken ...
|
|
Benefits of our industrial sensors
The R2 and R3 series of photoelectric sensors are impressive products that characterize a very small housing plan. Robust R2/R3 miniature photoelectric sensors – smaller than a matchbox, space-saving miniature housing photoelectric sensors R2/R3 series ...
|
|
P+F proximity switch selection points
1. Select the proximity switch type according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is a non-metal such as wood, plastic, paper, water, etc., or a smaller and finer metal, a capacitive proximity switch should be selected.
...
|
|
Tips and tricks for using sensors – a blessing
Tip 1 – Start with the bus stuff
As a first step, the engineer should use the method of first interfacing the sensor to constrain the ignorance through a bus thing. A bus thing connects to a personal computer (PC) and then to the sensor for I2C, SPI or other ...
|
|
Application features of rotary incremental encoders
The rotary incremental encoder outputs pulses when it rotates, knows its orientation by the counting device, and remembers the orientation by relying on the internal memory of the counting device when the encoder does not move or the power goes out. In this way, when the power goes out, the encoder can not have any movement, and when the call is working, the encoder ...
|
|
The sensitive core structure of the accelerometer – we are blessed
The accelerometer is a sensor that can measure acceleration, this sensor can help the product to understand the environment in time, and it is very accurate, so what is the structure of its sensitive core?
1. Compression method: ...
|
|
Models of square proximity switches
NBB20-L2-E0-V1/ NPN normally open
NBB20-L2-E2-V1/ PNP normally open
NBB20-L2-A2-V1/ PNP normally open + normally closed
NBN40-L2-Z0-V1/ DC two-wire normally open
NBN40-L2-E0-V1/ NPN normally open
NBN40-L2-E2-V1/ PNP normally open
...
|
|
The right way to choose a torque sensor – we are blessed
With the gradual growth of demand for torque sensor shopping malls at that time, in recent years, manufacturers and brands producing torque sensors have shown a rapid upward trend.
|
|
Encoder failure and selection matters - Bejiafu
An encoder is a device that compiles or converts signals or data into signals that can be communicated, transmitted, and stored. The encoder converts angular or linear displacement into an electrical signal.
Fault Symptom:
1. The encoder itself ...
|
|
Anti-jamming technology for sensors – we are blessed
1. Shielding skills
Containers are made from metal materials. Wrapping circuits that require maintenance between them can effectively prevent the disturbance of electric or magnetic fields, which is called shielding. Shielding can be divided into electrostatic shielding, electromagnetic shielding and low-frequency magnetic shielding.
2. Electrostatic shielding
...
|
|
Recognition of the number of pulse positions of the encoder
The pulse encoder is a rotary encoder that uses the rotation pulse for signal output, and the main characteristics are the standard shape and diversified shape structure; The internal coding is stable, the signal output qiang, and the pulse value and positioning value are clear. Therefore, when choosing this type of punching encoder, ...
|
|
Installation and equipping of ultrasonic sensors
Ultrasonic sensors are used for the inspection of printed circuit boards (PCBs):
In this application, ultrasonic sensors are used to inspect printed circuit boards. So what factors need to be considered when installing and installing ultrasonic sensors ...
|
|
Precautions for installation during the use of encoders
First of all, the following points should be paid attention to when wiring the encoder:
1. It is necessary to use a metal cable bracket and ensure that the bracket connection is connected to the ground;
2. The cable should be arranged as close to the metal parts as possible, such as control cabinet panels, beams and metal rails, etc.
|
|
P+F proximity switch selection
1. Select the type of proximity switch according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is non-metal such as wood, plastic, paper, water, etc., or smaller and finer metals, the capacitive proximity switch should be selected.
...
|
|
Contact
working hours
