In this case, I think you should go directly to the manufacturer! ! ! Ask them to solve the problem! ! ! If you buy a flowmeter, you must buy a better quality flowmeter, otherwise it will often go wrong, which is quite troublesome! It is better to find the manufacturer of flowmeter, which is more secure! !

My friend once bought and sold flowmeters produced in Weinan and Shunda, Shaanxi. The quality is good, and more importantly, their after-sales work is better. From the date of delivery, 18 months three guarantees, non-human damage to quality problems. They are responsible for repair, replacement and return, and provide paid lifelong maintenance services beyond the three-guarantee period.

Many times, I think after-sales service is very important. It's not terrible to have problems. The terrible thing is that there is a problem and no one can be found.

I suggest you consider: Shaanxi Weinan and Shunda flowmeter.