Many of my friends are using tire pressure pens for the first time. They are not familiar with the structure and performance of the product and have many questions. Now leave a conversation with one of the customers for the reference of novice friends:
customer:
I haven''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t actually tested it on my car, but I feel that its sealing is not very good. It is reasonable to say that the sealing of the pressure measurement should be better. When the sealing of this thing is very poor, or there is basically no sealing
Owner:
I have used this thing before. It relies on resistance, not sealing. I used it with an error of 0.2PA. Fortunately, it was mechanical. I learned that it was an error, so the next time I subtract 0.2, it will be accurate. Approximately 1 out of ten errors. But this thing is really cheap, and it is convenient to put it in the car. The answer to the manufacturer was also the same. You can try this one
customer:
Can you explain further, what is the internal structure of this thing?
Owner:
I haven''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t taken it apart and watched it. It''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s just a frictional resistance. After reaching a certain level, it can''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t stand up anymore. If it is sealed and tested continuously, it will hit the top and it will be inaccurate.
customer:
Well, this principle is good
Owner:
I press a valve 3 times, none of which is reset. The last pressure left is the real pressure. Every time I press it for about 2 seconds, I press more for fear that the tire will leak too much air.
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