How can the service life of vacuum pressure switches be extended?

To extend the service life of vacuum pressure switches, it is necessary to start from aspects such as installation and commissioning, operation and maintenance, optimization of the usage environment, reasonable selection, and operation norms. The following is a detailed introduction:

Standard installation and commissioning

Correct installation location: The installation location should be far away from vibration sources, such as large motors and compressors, as long-term vibration can cause the internal parts of the switch to loosen and wear out, affecting the stability and accuracy of its measurement. At the same time, high-temperature areas should be avoided. High temperatures may accelerate the aging of electronic components inside the switch and reduce the accuracy of sensors. If it is impossible to avoid high-temperature areas, effective heat insulation measures should be taken, such as installing heat insulation covers. In addition, the installation location should be convenient for operation and maintenance, facilitating the staff's debugging, parameter setting and subsequent inspection and repair work.

Professional commissioning: After the installation is completed, it should be debugged by professional technicians. According to the actual requirements, precisely set the parameters such as the pressure threshold and output signal of the switch. During the debugging process, it is necessary to ensure that the switch operates sensitively and accurately to avoid frequent misoperation or failure to work properly due to improper debugging. For instance, when setting the pressure threshold, it is necessary to fully consider the actual working pressure range and fluctuation of the system, and leave a certain margin.

Strengthen operation and maintenance

Regular inspection: Develop a regular inspection plan. The inspection contents include whether the appearance of the switch is damaged, whether the connection parts are loose, and whether the sealing parts are aged, etc. For electronic vacuum pressure switches, it is also necessary to check whether the display screen is showing normally and whether the keys are sensitive, etc. Regular inspections can promptly identify potential problems and take corresponding measures to handle them, preventing the issues from expanding and affecting the service life of the switch.

Cleaning and maintenance: Regularly clean the switch to remove surface dust, oil stains and other impurities. You can use a clean soft cloth or brush to wipe it, but be careful not to use overly rough tools or chemical solvents to avoid damaging the surface and internal components of the switch. For switches with heat dissipation holes, make sure the holes are unobstructed to prevent dust from blocking and affecting the heat dissipation effect.

Calibration test: Regularly calibrate and test the vacuum pressure switch to ensure that its measurement accuracy meets the requirements. Calibration can be carried out using professional calibration equipment or standard pressure sources, and the parameters of the switch can be adjusted based on the calibration results. The calibration cycle can be determined based on the frequency of use and importance of the switch. Generally, it is recommended to conduct calibration every six months or once a year.

Optimize the usage environment

Control temperature and humidity: Try to install the vacuum pressure switch in an environment with suitable temperature and humidity. Generally speaking, the operating temperature range of the switch is between -20℃ and 80℃, and the humidity should be controlled below 85%. If the ambient temperature is too high, measures such as ventilation and heat dissipation can be taken. If the environmental humidity is too high, dehumidification equipment can be installed or protective covers with good sealing performance can be used.

Avoid corrosive media: If corrosive media such as acids, alkalis, organic solvents, etc. exist in the usage environment, effective protective measures should be taken. For instance, use corrosion-resistant materials to make the switch housing or install protective covers to prevent corrosive media from corroding the switch and damaging its structure and performance.

Reasonable selection

Matching system requirements: When choosing a vacuum pressure switch, a reasonable selection should be made based on the actual system's pressure range, accuracy requirements, output signal and other parameters. The range of the selection switch should be slightly larger than the maximum working pressure of the system to avoid the switch being in a full-scale working state for a long time, which may affect its service life. At the same time, the appropriate output signal type should be selected based on the degree of automation and control requirements of the system, such as analog output, digital output, etc.

Choose reliable quality products: Give priority to well-known brands and reliable quality products. These products all have strict quality control systems during the processes of research and development, production and testing, which can ensure the performance and stability of the products. The quality of a product can be understood by checking its quality certification, user reviews and other methods.

Standardized operation and use

Avoid overload: During use, prevent the vacuum pressure switch from being subjected to a load exceeding its rated pressure. Overload can subject the pressure sensor, spring and other components inside the switch to excessive stress, causing damage or deformation of the components and affecting the normal operation of the switch. If the system pressure may exceed the rated pressure of the switch, an overpressure protection device should be installed.

Correct operation: The operator should be familiar with the operation method and precautions of the vacuum pressure switch and operate it in accordance with the operation procedures. Avoid frequently switching on and off the power supply or making unnecessary parameter adjustments to prevent unnecessary damage to the switch. When adjusting parameters, it should be done slowly and steadily to avoid inaccurate parameter Settings or incorrect switch operations due to excessive speed.