A load cell (also known as a load cell) is a type of sensor that converts a physical force signal into an electronic signal. From the basic principle, it is divided into strain type, piezoresistive type, piezoresistive type, foot type, etc.
Non-repeatability: The large difference in the output of the sensor when the same weight is repeatedly loaded in the same environment, which is generally expressed as a percentage of the additional output. Additional range: The sensor is planned to measure the maximum value within the scale of the parameters indicated to the satisfaction.
Sensitivity coefficient: The output of the sensor at full-scale load, generally expressed as:
Zero-balance: The output of the sensor under no load.
Hysteresis: The large difference between the "force (incremental)-output" curve of the sensor and the "force (decreasing)-output" curve at the same load, generally indicating the percentage of additional output of the station.
Nonlinearity: The large difference between the actual "force (incremental)-output (mV/V)" curve of the sensor and the straight line connecting the zero output (mV/V) and the extra output (mV/V) of the sensor, generally expressed as a percentage of the additional output.
Creep: The change of the output of the sensor with the same load in the same environment, generally indicating the change in the output for 30 minutes of full-scale loading as a percentage of the additional output.
Compensation Temperature Scale: Within the compensation temperature scale, the additional output and zero equilibrium do not exceed the indicated range.
Operating temperature scale: Within the operating temperature scale, the temperature will not have a negative impact on the parameters of the sensor.
Safe Overload: A large load that is promised to be applied without offsetting the sensor parameters. It is usually expressed in the form of a share of additional range (e.g., 150% of F.S.)
Ultimate overload: The promised increase in weight without causing mechanical damage to the sensor. Indicated in the form of shares of additional ranges.
Zero Temperature Drift: The zero output is affected by a change in temperature.
Sensitivity Temperature Drift: Sensitivity (extra output) is affected by temperature changes.
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Common faults of pressure sensors – ifm
The pressure sensor is still widely used in this world, but it is still a metal product after all, and it will fail after a long time.
1. Sealing problems of pressure transmitters
Initial pressurization, the output of the transmitter ...
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Mathematical modelling for the diagnosis of sensor faults – ifm
Diagnose sensor faults based on mathematical models? When there is a problem, the first time is to diagnose it, see where the problem is, so that it is easy to deal with, from different angles, we use more than one method when diagnosing the problem, if this is classified, it can be divided into two ...
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Troubleshooting of high-frequency pressure sensors during operation
1. When the pressure goes up, the output of the transmitter can't go up.
In this case, you should first check whether the pressure connection is leaking or blocked. If you admit that it is not, check the wiring method and check the power supply, if the power supply is normal, then briefly pressurize to see if the output changes, or observe the zero position of the sensor ...
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Precautions for the use of resistive load cells – ifm
(1) When the strain limit increases with the strain, the nonlinearity of the output of the strain equipment increases, and the error reaches 10%, the strain limit of the strain equipment is general.
(2) After the mechanical hysteresis sensitive grid, subbase and adhesive layer are subjected to mechanical strain, they will generally ...
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Features of the S-type load cell – ifm
1. S-type load cells are moderately priced and suitable for mass production - good sensor consistency is required, suitable for automated batch production, and high requirements for processing equipment to eliminate inconsistencies and faults formed by manual operation.
2、 ...
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The difference between ifm inductive and capacitive sensors
There are many different series under ifm sensors, including inductive and capacitive sensors. So what's the difference between the two sensors?
ifm inductive sensors are essential in industrial use.
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Common faults of lambda sensors – ifm
1. Oxygen sensor poisoning.
Oxygen sensor poisoning is a common and difficult problem to prevent, especially in cars that often use leaded gasoline, and even new oxygen sensors can only operate for a few thousand kilometers. If it's just a subtle case of lead poisoning, then use a box of lead-free ...
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Position sensor key terms
Incremental sensors
Only the bearing change information is provided so that the practice bearing is unknown at startup. Each time the index/symbol signal is used to say the zero or zero bit of the device. Detected in the homing procedure. For the commutation of brushless motors, the motors usually have three magnetic Hall sensors, which are ...
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Features of the ifm IO-Link multicolor touch sensor:
Thanks to a uniquely adjustable sensor, it can be flexibly adapted even in wet environments
●After touching the sensor, the ergonomic plan is selected for work
● Open delay can prevent unintentional opening ...
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Applications of IFM capacitive sensors
1. ZCS1100 fine capacitance displacement sensor. This sensor can detect piezoelectric micro-displacement, shaking table, electron microscope fine-tuning, astronomical telescope lens fine-tuning, fine micro-displacement measurement, etc. The sensor is a single channel, high-performance linear displacement measurement system, innovative ...
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Grounding Considerations for Servo Drives – ifm
1. The correct shield grounding point is at the reference potential inside the circuit, which depends on whether the noise source and receiver are grounded together, or may float.
Second, it is necessary to ensure that the shield is grounded at the same point so that the ground power ...
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Method for measuring torque using angle sensors – ifm
It is difficult to measure torque on a rolling shaft, and there are several ways to do it. The most common method is to derive the torque from the energy required by the rolling shaft. In general, this means measuring the current of the motor that drives the rolling shaft. This is sketchy but inaccurate, as ...
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ifm UGT505 is used to improve air quality
Green City Solutions is committed to improving urban air quality. As a result, they developed CityTree, the world's first bio-skill air filter. The filter is integrated in the UGT505.
CityTree uses ...
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ifm's new products have once again won the Germany Design Award
After winning the Germany Design Award last year, three ifm products were awarded the Germany Design Award 2020 this year: the MQ2000 magnetic sensor, the EVF570 wireable jack and the O2I500 barcode/QR code reader were all recognized by the jury.
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ifm - the development of intelligent manufacturing in industrial automation
Recently, the 2019 World Sensor Conference and Exhibition with the theme of "Perceiving the World and Winning the Future with Wisdom" ended smoothly at the Zhengzhou World Convention and Exhibition Center, with experts and scholars from more than 20 countries and regions around the world, business representatives and more than 300 well-known professional enterprises gathered in Zhengzhou to create a ...
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Common models of IFM temperature sensors
IFM sensor is a sensor with optoelectronic devices as the conversion element, which can be used to detect non-electric amounts that directly cause changes in light quantity, such as light intensity, illuminance, radiation temperature measurement, gas composition analysis, etc.; It can also be used to detect other non-electric charges that can be converted into changes in the amount of light, such as part diameter, surface ...
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Use of the ifm OGD580 laser distance sensor
The OGD580 is a spaced sensor (PNP type) with two digital output channels, each of which can be set to normally open, normally closed, or closed, depending on the requirements.
OGD580 consists of three parts: laser emitter, ...
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Precautions for the installation of high-frequency pressure sensors – ifm
The depth of the internal thread of the installation with the sensor should be greater than the length of the external thread of the sensor itself, so as to avoid the sensitive diaphragm of the sensor pushing to the bottom of the internal thread, so that the sensor is affected by stress.
If the size of the internal thread has been ...
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Third prize in the ifm Innovative Product Group
The MVQ Smart Valve Sensor can accurately survey the valve orientation, and also has functions such as valve seal monitoring, sediment monitoring, blocking monitoring and switching time timeout monitoring for continuous valve condition monitoring. When the valve presents sediment accumulation, foreign body blockage, seal damage, etc., ...
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Load cell weighing reasons and connection to PLC – ifm
The principle of a load cell is that the gravity on the measured object is converted into a measurable output signal in a certain proportion.
The load cell can generally be connected to the PLC or the quadratic meter for the number display.
Regarding the use of PLC connection load cells in the factory, we generally have two ways to ...
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