With the rapid development of science and technology, and the continuous advancement of science and technology. Electronic pressure switches have replaced switch valves and are used in every corner of our daily lives. For example, such as hydraulic lubrication industry, high and low pressure protection control of air compressors, civil thermal power stations and nuclear power stations, electronic pressure switches are convenient for our daily life because of intelligent control. However, when buying an electronic pressure switch, what should you pay attention to? Let's take a look at it with Xiaobian.
Electronic pressure switch purchase notes:
1. What environment is the electronic pressure switch used?
Some pressure switches need to be able to be used normally in a specific environment, such as high water vapor, high dust and other harsh environments, so the waterproof and dustproof capacity of the pressure switch is required. When selecting the pressure switch, the customer must use it according to the use. Check the environmental protection level on the product manual. Under normal circumstances, if the waterproof and dustproof requirements are high, the rating is IPXX.
2, the output signal of the electronic pressure switch
There are many types of pressure switches, but how do you choose from a wide range of pressure switches? Here is a small trick to determine which pressure switch to choose by determining the type of output signal for the pressure switch. The analog output means that if you need to output an analog signal of 4-20 mA, you should use a pressure transmitter. If the output is a switching signal, don't forget to choose whether to open the normally open contact or the normally closed contact.
3. What kind of interface is required for the electronic pressure switch?
Customers must pay attention to the selection of the appropriate interface thread, to avoid not paying attention to this aspect and lead to additional connectors, and ultimately return with the manufacturer, delay use. The default factory interface of our company's products is G1/4 internal thread. Customers can provide their own adapters.
4. Ambient temperature and temperature of the medium used by the electronic pressure switch
The internal material of the pressure switch directly determines the temperature of the environment in which the pressure switch is used. If the temperature is not used properly, the pressure switch will not operate or malfunction. For example, the dead zone of the pressure switch directly affects the performance of the pressure switch, thus directly affecting User's use.
5, the maximum range of electronic pressure switch
The pressure switch should be selected taking into account the maximum pressure of the system and the pressure point at which the switching action needs to be triggered. For example: When your pipeline has a maximum pressure of 1000kpa, you need to output a switching signal at 600kpa. At this time, select a pressure switch with a withstand voltage of 1000kpa or more and a set point of 600kpa.
6, the contact capacity of the electronic pressure switch
This is very important. There are electrical requirements in the switch specifications of all manufacturers. This parameter depends on the maximum voltage and maximum current of the subsequent circuit. If it is not suitable, there is a danger of breakdown. Also understand that some pressure switch terms are necessary for the purchase of pressure switches, such as double-pole double-throw, single-pole double-throw, range, accuracy, IP rating, explosion-proof rating and so on.
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