What should I pay attention to when using KEYENCE sensors?

What should I pay attention to when using load cells? Now there are many people who do not understand this aspect, perhaps because of the failure in the middle, or it may affect the life of the use, so it is necessary for us to understand this aspect. It is important to note that it is handled gently, because its internal structure is more fine, if in the process of holding, the oscillations and impacts will also affect the inside, and it is likely that the data will be wrong.

In particular, it is necessary to take care to avoid vibration of the small-capacity KEYENCE sensor for alloy materials. It should be noted that when loading the device, the method is to ensure that the loading force and the force axis coincide, not skewed, as long as this way, the data can be obtained, if it is in a horizontal state, the plane of the base must reach the balance degree, otherwise in the case of partial force, the force point presents an error, which will naturally affect the output data.

The third is to pay attention to the use of load cells, no matter what kind of sensor, there are also its limitations, if it is just a simple addition of components, not only can not get a good data at the time, but also will affect the next use, generally at the time of purchase, there is also a load ceiling, before the use of it is necessary to read the manual, other but also pay attention to its anti-corrosion operations, in the appearance of the coating of professional anti-corrosion protection information, such as petroleum jelly.

There are also a few basic divisions, which are they divided into? So optoelectronics, hydraulics, electromagnetics, gyroscopes, etc., different types in the use of different characteristics, so in the application, also have their own adaptability, such as photoelectric, it is the use of grating into a professional stripe code, and then replaced by photoelectric signal, it has a great sensitivity, in the electromechanical scale on the use of it.

In contrast, the hydraulic type is when it is affected by the strategy, the internal hydraulic pressure increases, which reflects the degree of the component. It will not exceed one percent in accuracy, but because it also has a big advantage, that is, it is very strong and firm, so it has a strong load-bearing ability, so it is generally applied to large component measurements. The accuracy of electromagnetic force is higher, and it is precisely because of this advantage that it is welcomed by many users.

KEYENCE sensor in the use of time, has a very low cost, although it reflects a certain lack of function, but relatively speaking, there are some special places like to use it, the accuracy of the gyroscope ceremony is extremely high, not only can measure the component, at the same time oscillation during all the changes, can also be accurately measured, in addition to the measurement accuracy has a good test, other it can also reach a very good resolution.

It is a device that converts the pressure of a gas or liquid into a usable electrical signal. According to the wiring method, the pressure transmitter can be divided into two-wire system, three-wire system and four-wire system. What the landlord saw was supposed to be a four-wire pressure transmitter. Two power cables, two signal cables. The power supply is connected to 24V direct current, and the simple detection method is to use an ammeter or voltmeter to connect both ends of the signal line. When the power supply is connected, the ammeter will have a current of 4mA or the voltmeter will have a voltage of 0V or 1V.

The DC24V power cord of the transmitter is also a 4-20mA signal response line, that is, your second meter or DAS (data acquisition system) AI point should have DC24V output.

THE GENERAL OUTPUT SIGNAL OF THE PRESSURE TRANSMITTER IS THE CURRENT 4-20MA, 0-20MA, OR THE VOLTAGE 0-5V, 1-5V, 0-10, ETC., AND THE GENERAL CURRENT TYPE IS A TWO-WIRE OR FOUR-WIRE SYSTEM, AND THE VOLTAGE IS A THREE-WIRE OUTPUT. At present, many inverters in the city do not have 24VDC power supply, most of them are 10V, some transmitters with large power consumption, 10VDC power supply can not be driven, then only external power supply 24VDC. In this way, the inverter presents four terminal blocks: power +, power supply-, reaction+ and reaction-. Current four-wire wiring method: power +== power supply +; Power -== Power Supply -; Signal +== Reaction +, Signal -== Reaction -. Current type two-wire connection ratio method: power supply +== power supply +; Signal +== reaction +, power supply -== reaction-. Voltage type three-wire wiring method: power +== power supply +; Power-(Signal-)== Power-; Signal +== Reaction +, Power - (Signal -) == Reaction -.

KEYENCE sensors can be connected directly to the inverter, and the power supply can be connected to the signal circuit using the 24V power supply on the inverter.

KEYENCE sensors are current-type, but they are still voltage-type! See clearly the output voltage, the voltage output of the pressure transmitter is terminated, the external adjustable voltage input of the inverter, the external connection of the pressure transmitter and the inverter is adjustable, and the hardware is transformed to complete the software, and you need to provide the positive rotation, frequency speed and driving method

KEYENCE sensors are used in the environment in which they are routinely used. In this case, the application environment of the sensor is relatively mild, and there is no need to do other special treatment on the sensor.

The harsh operating environment generally refers to the extremely high or very low ambient temperature, which is used in wet and liquid splashing occasions. There is also an occasion of alkaline and acid corrosion. These applications place high demands on the raw materials and manufacturing processes of the sensors.

Corrosion-resistant sensors are primarily used in equipment with chemical agents. The evaporation and spillage of chemical reagents during application can cause great damage to conventional sensors. At this time, we need to make special treatment for the load cell.

First of all, the selection of materials for the sensor is more elegant. The sensor data not only has an impact on the processing difficulty of the sensor, but also directly affects the overall function of the sensor, so we will first use two kinds of stainless steel materials.

One is 2Cr13 and the other is 17-4PH.

These two stainless steel raw materials are stainless steel raw materials with excellent sensor weight. After the selection of materials, the final consideration of the sensor sealing function is carried out. If the sealing is not good, the evaporated gas and spilled liquid will cause damage to the inside of the sensor, and the degree and duration of the damage will depend on the chemical agents present in the environment and the speed or slow of corrosion. There are two main places where the sensor needs to be sealed, which is the strain zone and the outlet hole.

These two KEYENCE sensors are directly connected to the strain resistor. The strain zone is glued filled with laser welding. The cover plate is welded together in one piece with the elastomer. The waterproof crimping nut is selected for the outlet hole, and the gap is filled with sealant.

It should be that after the sealing ring is squeezed, the entire outlet hole will be completely blocked, so that the effect of complete sealing can be achieved. At this point, a corrosion-resistant load cell is manufactured.

What should I pay attention to when using KEYENCE sensors?

What should I pay attention to when using KEYENCE sensors?

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