What factors are related to the durability of pressure sensors?

Choosing the right sensor in industry requires comprehensive consideration of many factors. The following are some key steps and points:

Clear measurement requirements

Determination of measurement parameters: First, it is necessary to know what physical quantities need to be measured, such as temperature, pressure, displacement, flow, speed, force, etc. Different types of sensors are needed for different measurement parameters, for example, thermocouple, thermal resistance or infrared temperature sensor can be selected for measuring temperature.

Device; To measure pressure, piezoresistive, capacitive and inductive pressure sensors should be selected.

Determine the measurement range: according to the actual application scenario, determine the maximum and minimum values of the measured physical quantities, ensure that the measurement cycle of the selected sensor can cover this range, and leave a certain margin to ensure the accuracy and reliability of star measurement. For example, in a pressure range of

In the hydraulic system of 0-10MPa, the pressure sensor with measuring range slightly greater than 10MPa should be selected.

Considering the accuracy requirements: Accuracy indicates the proximity between the measured value of the sensor and the real value. According to the precision requirements of specific industrial applications, sensors with corresponding precision grades are selected. The higher the accuracy, the higher the price. Therefore, it is necessary to weigh the image accuracy and cost reasonably on the premise of meeting the measurement requirements, for example, 0. In precision machining, high-precision temperature or position sensors may be needed to ensure the product quality; in some occasions where the accuracy is not high, sensors with lower accuracy but lower cost can be selected.

Assess the working environment

Temperature conditions: If the sensor needs to work in a high-temperature environment, such as near the melting furnace in metallurgical industry or in the engine compartment, it should choose a high-temperature resistant sensor and ensure that it can work normally in the specified high-temperature range and has good stability. Some sensors may have temperature compensation function to maintain the stability of measurement accuracy when the temperature changes.

Temperature and corrosiveness: In humid or corrosive environment, such as chemical industry, food processing and other industries, sensors with good sealing performance and corrosion resistance should be selected to prevent the sensors from being damaged by humidity or corrosion and prolong their service life. Vibration and impact: In the case of strong vibration or impact, such as automobile manufacturing and heavy machinery, sensors with strong vibration and impact resistance should be selected to ensure their stable and reliable operation, so as to avoid sensor failure or inaccurate measurement caused by vibration or impact.

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Electromagnetic interference: In the environment where there is strong electromagnetic interference, such as power substations and electronic manufacturing workshops, sensors with good electromagnetic compatibility (EMC) should be selected to prevent electromagnetic interference from affecting the normal operation of sensors and pay attention to sensor performance in measurement results.

Response time: the response time refers to the time from the time when the sensor receives the signal to the time when the output is stable. For the application of industrial process control or automatic production line that needs quick response, the sensor with short response time should be selected to obtain the scene data in time and accurately.

Realize rapid control and adjustment.

Reliability and invisibility: the reliability of a sensor refers to the probability that it can work normally within a specified time and under specified conditions. Choosing a sensor with high reliability can reduce system failures and maintenance costs and improve production efficiency. The stable part refers to the ability of the sensor to keep its output unchanged during long-term work. Good stability can ensure the accuracy and consistency of measurement results, which is very important for long-term operation of industrial systems. Sensitivity: Sensitivity refers to the sensitivity of the sensor to the measured change. Generally speaking, the higher the sensitivity, the greater the perceived small change, but too high sensitivity may cause the sensor to be too sensitive to external noise and affect the measurement accuracy. Therefore, when selecting the sensor, it is necessary to comprehensively consider the sensitivity and signal-to-noise ratio according to the requirements of specific applications in order to obtain the best measurement effect.

Consider installation and use requirements.

Size and weight: according to the size of the installation space and the bearing capacity of the equipment, choose the sensor with appropriate size and weight. Ensure that the sensor can be installed in the predetermined position conveniently, and will not cause undue burden to the normal operation of the equipment. Installation method: Different sensors have different installation methods, such as threaded connection, flange connection, paste fixation, etc. According to the characteristics of industrial equipment and the requirements of installation location, sensors that are easy to install and firm to install should be selected to ensure the accuracy and reliability of measurement. Maintenance cost: Consider the difficulty and cost of sensor maintenance. Some sensors may need to be calibrated, cleaned or replaced periodically, while others have lower maintenance requirements. Choosing sensors with low maintenance cost and easy maintenance can reduce the overall operation cost of the equipment.

Compatibility and integration

System compatibility: confirm whether the sensor is compatible with the existing industrial control system, data acquisition system or other related equipment. Understand the output signal type (such as analog signal and digital signal) and communication protocol of the sensor to ensure that it can be compatible with the system's.

Input interfaces are matched to realize smooth data transmission and exchange.

Software integration: If it is necessary to integrate the sensor data into a specific software platform or application, it is necessary to consider whether the sensor provides the corresponding software development kit (SDK) or driver for software integration and data processing.

Cost-benefit analysis budget limit: On the premise of meeting the performance requirements, compare the prices of different brands and models of sensors according to the budget range, and conduct cost-performance analysis. In the case of similar prices, sensors with better performance and more reliable quality are preferred; In the case of similar performance, the sensor with lower price and more cost advantage is selected.

Long-term benefits: In addition to considering the purchase cost of sensors, it is also necessary to comprehensively evaluate the impact of factors such as service life, energy consumption and maintenance cost on long-term operating costs. Choosing sensors with high cost performance and long-term benefits will help reduce the total cost of enterprises.

Body cost. Shenzhen Kaidechang Electronic Technology Co., Ltd. is a professional manufacturer of high-quality and high-precision force sensors. The main products are more than 100 kinds of force control products such as miniature pressure sensors, tension-compression column sensors, screw tension-compression sensors, S-type tension-compression sensors, shaft pin sensors, weighing force sensors, multi-dimensional force sensors, torque sensors, displacement sensors, pressure transmitters (hydraulic sensors), transmitters/amplifiers, control instruments, and hand-held instruments. Products are widely used in more than 10 new and intelligent high-end fields, including industrial automation production lines, 3C, new energy, robots, machinery manufacturing, medical care, textiles, automobiles, metallurgy, transportation and other fields: continuous product technology innovation and strong new product research and development capabilities.