01. Application of pressure sensor in weighing system In industrial control, pressure sensing technology is increasingly being used in commercial weighing systems. In many control processes, it is often necessary to collect pressure signals and convert them into electrical signals that can be automatically controlled.

1. Piezoresistive pressure sensor Resistive strain gauges are one of the main components of piezoresistive strain transducers. The working principle of metal resistance strain gauge is the phenomenon that the resistance value changes due to mechanical deformation due to the strain resistance adsorbed on the base material, which is commonly known as the resistance strain effect. ...

When choosing a pressure sensor, we need to consider its comprehensive accuracy, and what are the aspects that affect the accuracy of the pressure sensor? In fact, there are many factors that cause sensor error, and we will pay attention to four unavoidable errors, which are the initial error of the sensor. Head...

1. Prevent the debris from being deposited in the catheter and the sensor from coming into contact with corrosive or overheated media. 2. When measuring gas pressure, the pressure intake should be opened at the top of the process pipeline, and the sensor should also be installed in the upper part of the process pipeline, so that the accumulated liquid can be easily injected into the process pipeline. ...

1. Strain gauge pressure sensor Strain gauge pressure sensors are sensors that measure pressure primarily by measuring the strain of an elastic element. Depending on the material, strain gauges are divided into metals and semiconductors. When the conductor and the semiconductor material are mechanically deformed, their resistance value will change.

1. Correct installation method of pressure sensor: (1) Verify the frequency response value of the pressure sensor under normal atmospheric pressure and standard temperature conditions with appropriate instruments. (2) Verify the correctness of the code of the pressure sensor and the corresponding frequency response signal. 2. ...

1) Large adjustable range, up to 10,000ppm, a wide range of sensors can be used; 2) Programming through simple circuits and easy-to-use software; 3) Pressure sensors are manufactured in a unique way and are specifically designed to meet industrial needs; 4) Sensors ...

Pressure is one of the important parameters in industrial production, and in order to ensure the normal operation of production, it must be monitored and controlled. The following are common terms used when selecting pressure sensors: Standard press The magnitude of the pressure expressed by atmospheric pressure is greater than the atmospheric pressure ...

Pressure sensors are mainly used in: booster cylinders, boosters, gas-liquid booster cylinders, gas-liquid boosters, presses, compressors, air conditioning and refrigeration equipment and other fields. 1. It is applied to hydraulic system The pressure sensor is mainly used to complete the closed-loop control of the force in the hydraulic system. When the control ...

The first point is that photoelectric sensors and fiber optic sensors work differently First of all, from the working principle of the two, first of all, the photoelectric sensor works according to the principle of the photoelectric effect, that is, when the light hits the photoelectric sensor made of semiconductors, it will emit light ...

(1) The principle of physical optical fiber sensor, which uses the sensitivity of optical fiber to environmental changes to convert the input physical quantity into a modulated optical signal. Its working principle is based on the optical modulation effect of optical fibers, that is, the optical fiber's response to external environmental factors, such as temperature, pressure, electric field, ...

How to judge the quality of fiber optic sensors: 1. Packaging, first of all, it depends on whether the packaging of the fiber grating sensor is suitable for your application; 2. Range, whether the range of the FBG sensor is consistent with your measurement index; 3. Accuracy, the accuracy of the sensor itself as ...

1. Fully automatic calibration When the workpiece enters the sensitive area of the probe, hold down the "SET" button for 3 seconds, and the sensitivity value will be set and displayed in green 2. Two-point calibration When the workpiece is not in the sensitive area, hold down the "SET" key for three seconds, there is a ...

1. Detection of temperature The optical fiber temperature sensor uses a polymer temperature-sensitive material that matches the refractive index of the optical fiber to coat the outside of two optical fibers that are fused together, so that the light energy is input from one optical fiber to the reflective surface and output from the other optical fiber.

1. There is no display on the digital display after connecting the power supply (1) Check whether the power cord is broken and whether the plug contact is good. (2) Whether the power fuse of the digital display meter is blown. (3) Whether the power supply voltage meets the requirements. 2. The digital display table does not count (1) Passing ...

(1) The sensing element in the distributed optical fiber sensing system is only optical fiber; (2) The one-dimensional distribution map of the measured optical fiber area can be obtained in one measurement, and the two-dimensional and three-dimensional distribution of the measured can be measured by erecting the optical fiber into a grating-like shape; (3) The space of the OTDR system ...

1. Realize the simultaneous measurement of multiple physical parameters (temperature and strain) or chemical parameters on a single optical fiber; 2. Improve the measurement range of the measurement system and reduce the measurement time; 3. Improve the detection ability of the signal receiving and processing system, improve the spatial resolution and measurement of the system.

(1) The sensing element in the distributed optical fiber sensing system is only optical fiber; (2) The one-dimensional distribution map to be measured in the whole optical fiber area can be obtained in one measurement, and the two-dimensional and three-dimensional distribution of the measured can be determined by erecting the optical fiber into a grating shape; (3) The empty ...

1. Intensity-modulated optical fiber sensor It is a sensor that uses changes in the refractive index, absorption, or reflection of sensitive components caused by changes in the parameters of the measured object to achieve sensitive measurements. There are microbending losses using optical fibers; absorption characteristics of each substance; Raise...

The appearance of a fiber optic sensor is basically made up of the following parts, from left to right: (1) SET key, which can be used for sensitivity setting. The basic principle of the sensor is to sense the refractive index of different media through an optical fiber probe to obtain a digital signal, which is displayed on the screen.

1. High precision, fast response speed, wide range of linear features, good repeatability of use, high signal-to-noise ratio of detection signal, due to the mass production of optical fiber, low price, can be widely used. 2. The optical fiber is made of dielectric material quartz, which transmits optical signals, so it is safe ...